Venkata Chandrasekhar Nainala (Chandu)

Friedrich Schiller University -JENA

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Update: March 2026

REACT WRAPPER

nmrXiv NodeJS MS ??

nmrXiv CLI ??

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nmrXiv License Templates ??

NOTE BOOKS

QC-NMR-CALC

Trends

Overall Summary

• Includes public, private and embargo status entities

Trends

Current status

• active items only, excluding deleted entities

Trends

Web usage

Time period: January 1 - December 31, 2025

Unique Users: 5,076

Page views: 14, 475

Unique page views: 8,502

Unique Downloads: 793

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How does an author deal with all of this?

He/She doesn’t have to. We process the data directly from the raw data (to be precise after the step 2 in the submission flow, where we validate the presence of minimum information)

DOI structure

Project: https://doi.org/10.57992/NMRXIV.P6

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Samples:

https://doi.org/10.57992/NMRXIV.P6.S45

https://doi.org/10.57992/NMRXIV.P6.S43

https://doi.org/10.57992/NMRXIV.P6.S41

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Spectra:

https://doi.org/10.57992/NMRXIV.P6.S45

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nmrXiv

N E W D A T A S U B M I S S I O N

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Onboarding Screen (Primer)

Upload (Drag & Drop or File Browser)

Missing & Corrupt file checks

DOI structure

Project V1: https://doi.org/10.57992/NMRXIV.P6.v1

Project V2: https://doi.org/10.57992/NMRXIV.P6.v2

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Project: https://doi.org/10.57992/NMRXIV.P6

Resolves to V2

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Samples: (no versioning of DOI) but versioning of metadata

https://doi.org/10.57992/NMRXIV.P6.S45

https://doi.org/10.57992/NMRXIV.P6.S43

https://doi.org/10.57992/NMRXIV.P6.S41

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New samples will get new identifiers so they always resolve

Global URL: Always resolves to latest version

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Spectra:

https://doi.org/10.57992/NMRXIV.P6.S45.D1345

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New spectra under existing samples will get new identifiers so they always resolve

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Or

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Use non human readable DOIs at all levels that resolves to the corresponding sample/spectra

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Implementation Timeline

Beta version: 3-4 weeks

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Available on nmrXiv dev site: Mid April, 2026

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Testing: 1 week

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Retrospective dataset migration: 1 week

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Production release: May 1st week

(this aligns with other major updates for the NFDI4Chem Consortium meeting release)

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Thank you

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nmrXiv

CURATION WORKFLOW

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Curation workflow - Semi automatic

Human in the loop approach

Data ingestion & staging

STEP 1: FILE UPLOAD

Metadata Normalization

STEP 2: ASSIGNMENTS & META-DATA

Data Validation

Failure to meet any of the requirements - validation failures (further human attention is required)

STEP 3: VALIDATION

File Integrity Checks

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Checksums match

Missing files

Meta-Data Checks

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Citation

Author

License

nmrXiv

COMPOUND

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Caffeine

Caffeine - Spectra

Caffeine - Metadata

nmrXiv

U P D A T E S

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nmrXiv

N E W D A T A S U B M I S S I O N

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Onboarding Screen (Primer)

Upload (Drag & Drop or File Browser)

Parallel uploads ( Strict validations & error tracking)

Parallel uploads ( Strict validations & error tracking)

Missing & Corrupt file checks

Auto-Processing Spectra

Auto-Import metadata

(compound information - .mol,.sdf,.nmredata.sdf)

Auto-Import metadata

(compound information - .mol,.sdf,.nmredata.sdf)

Validation Report

Validation Report

Multi-Spectra Views

Project or Independent Sample submissions

Ontology driven - Organism details (Part as well)

Samples Overview

Embargo mode - Team Sharing

Optimised processing - notifications

nmrXiv

S E A R C H

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MIChI Recommendations ( Draft Version)

https://docs.google.com/spreadsheets/d/1MxCceGO3UUAvIn-GWxxgeOUFnR34A3ileqIW3sYgZNU/edit#gid=0

Advanced Search

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Project

Sample

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Assay(s)

Molecule(s)

• Protocol description
• Measurement parameters
• Solvent
• Temperature
• Field Strength
• Instrument
• Ionization / Collection method

• Molecular Formula
• Inchi
• SMILES
• Similarity
• Substructure
• Exact
• Molecular Weight
• Name / Synonyms
• HOSE Code
• Descriptors*
• CAS

• Spectrum Type
• Spectrum category
• Spectra Processing parameters
• Raw Data types
• Processed Data types

Sample study

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Spectral Dataset(s)

• Keywords
• Description
• Organism
• Organism part
• Submitter
• Author
• Citation
• License Type
• Quality Score
• Timestamps

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• Keywords
• Description
• Organism
• Organism part
• Submitter
• Author
• Citation
• ID
• License Type
• Timestamps

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Collection

• Keywords
• Description
• ID

• Name
• ID

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Structure

Search

RDKit Based

~ Exact

~ Substructure

~ Similarity

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Structure Search

Results

Browse all samples

reporting the compound

in one view

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~ Compare spectra from

different samples

(UI updates pending)

nmrXiv

B IO S C H E M A M E T A D A T A S T R UC T U R E

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BioSchemas Metadata Structure

Project

Repo

Study/

Sample

Dataset/

Spectrum

hasPart (1 => n)

hasPart (1 => n)

isPartOf (1)

isPartOf (1)

includedInDataCatalog (1)

Study

Study

ISA

ISA

Dataset

ISA

DataCatalog

ISA

Organization

CreativeWork

Person

publisher

author

citation

ChemicalSubstance: sample

about

MolecularEntity: molecules

hasBioChemEntityPart

variableMeasured

Properties: inChI, inChIKey, iupacName, molecularFormula, molecularWeight, smiles, mol (hasRepresentation), Percentage composition (description)

nmrXiv Object

Bioschemas Type

Bioschemas Type

A R C H I T E C T U R E

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O V E R V I E W

nmrXiv Core

integrations

Web Application

Application Database

------

NMR Database

Search

Importers /

Exporters

Cache

SPA

Front end

File format converters

AI/ML

Tools

API

Workflows

Plugins

OAuth ~ SSO / AAI

Schemas

File format converters

AI/ML

Tools

Workflows

Plugins

Schemas

File format conversions

https://nmrxiv.org

https://chemotion.net/

https://www.mdpi.com/1420-3049/28/3/1448

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File format converters

Prediction Service

AI/ML

HOSE Codes

Lookup tables

Prediction / CASE

Assignments

CASE

Software /

Prediction

nmrXiv

Repository

Private

Inhouse data

Prediction

Service

Assignments

AI/ML

Prediction

Model

AI/ML

Prediction

Model*

Assignments

nmrXiv Core

integrations

Web Application

Application Database

------

NMR Database

Search

Importers /

Exporters

Cache

SPA

Front end

File format converters

AI/ML

Tools

API

Workflows

Plugins

OAuth ~ SSO / AAI

ELN

A collection of powerful microservices designed to simplify NMR data processing and analysis. nmrKit offers NMR Prediction, Validation, and Depiction via the nmrium library, seamless Format Conversion using the nmr-load-save package accessible through a unified API.

FAST API

CDK

RDKit

HOSE CODE

ALATIS NS

nmr-load-save

lwreg

NMR

Processing/Format conversions

NMR Prediction / Training

Spectral Assignments Validation

Search / Depiction

PostGreSQL

Redis

Minio

Graphana

Prometheus

Deep Learning Models (Tensor Flow/PyTorch)

Data - So far…

ELN Integration

Chemotion - nmrXiv

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ELN (Chemotion) - nmrXiv

Workflow

• Chemotion - Requests temporary Upload URL
• Uploads - RO-Crate based (BagIt) ZIP file
• nmrXiv jobs unzips and process metadata
• Validation/Publishing API

NMR Platform

New Roles

• Lab Operator

Manage Samples

Statistics

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• Facility Manager

Add or update lab

Operators

Manage instruments

Statistics

Announcements

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Any other roles??

• nmrXiv new roles to grant access to NMR platform views

Admin console access

• Facility Manager & Lab Operator

Can access admin console to

Manage NMR platform from the

nmrXiv interface when they login

Users with the admin console access (NMR Platform) will have additional links in the dropdown on the top right corner.

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Admin console options

Options to access NMR Platform in the User Admin Console

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NMR Platform Management

NMR Platform Dashboard

• Current Workload (Samples being processed)
• Instruments Active
• Settings etc.

Sample Management > Submission

nmrXiv University Private Page

Options to submit orders / Search etc.

Sample Management > Backend

Sample Details View

Options to select/upload spectra. Assignments and other meta-data

Samples overview

NMR Platform > Settings > Device Management

Manage devices (Add, Edit or Remove)

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Quick links to other settings on the platform

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This page evolves as we improve the platform integration

Metrics

Displays all metrics you would like to access - date range selection will be user controlled

• NMRium - metadata storage (rewritten)
• Downloads - Pre-generated URLs (faster and reliable)
• AutoImport - API driven (lot more stable)
• Extensive Validations (needs more)
• File integrity Checks implemented

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• PostgreSQL (migrated to v15.3 - support until 2027)
• RDkit cartridge enabled (Search)
• Simplified UX/UI (less maintenance)
• Bug fixes
• Autobackups

Highlights - Recent release

• NMR Prediction (NMRShiftDB)
• Spectra Validation Service

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• Format conversions
• NN training

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• Spectra - Quality control (scoring)
• Auto-Peak picking / Report export etc.
• Community curation

Next steps (nmrKit)

Thank you

Documentation

GitHub

API

Facilitating Comprehensive Metadata Capture and Validation in Data Repositories (nmrXiv) through Terminologies and Terminology Service Suite Widgets

nmrXiv

D A T A S T R U C T U R E

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Data life cycle / Versioning

https://github.com/ScienceObjectsDB/Documentation

Project 1

Project 2

Project 3

Study

Dataset

Dataset

Dataset

Dataset

Dataset

Dataset

Dataset

Sample

Assay

Spectra

M

Data Structure

Sample Study

Sample Study

https://github.com/ScienceObjectsDB/Documentation

Project 1

Project 2

Project 3

Sample Study

Sample

Assay(s)

Spectral Dataset(s)

Molecule(s)

Sample Study

Sample Study

Sample Study

Sample Study

Sample Study

Sample Study

Sample Study

Sample Study

Sample Study

• More Validation Checkpoints
• Auto-imported metadata - validation
• Group samples into project

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• Assignments auto processing
• Stereochemistry checks (missing centers)
• Md5 checksum (in archive files - downloadable)

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• Bug fixes / Refactoring

Next steps

Release

nmrkit.nmrxiv.org

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O N G O I N G D E V E L O P M E N T

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Prediction service will be going live soon*

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Subsequent releases should have file format conversions and other API

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S E R V E R S I D E

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B A C K E N D

Web application framework

Database

Cache

Search

Backend

Testing

CI/CD

Deployment / Testing (Maintenance)

Backend

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S P E C T R A V I E W E R

https://github.com/NFDI4Chem/nmrium-react-wrapper

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• Spectral Assignments Processing
• Efficient Versioning of changes
• Automatic Spectra Snapshots

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• Releases / Maintenance
• Bug fixes

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D O C U M E N T A T I O N

https://docs.nmrxiv.org

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D A T A I M P O R T & E X P O R T

I/O: Meta Data Model - RO-Crate

Chemotion Integration - todo

Workflow

• Chemotion - Requests temporary Upload URL
• Uploads - RO-Crate based (BagIt) ZIP file
• nmrXiv jobs unzips and process metadata
• Validation/Publishing API

BioSchema / DataCite

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• Integrated into NFDI4Chem Search service

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• Fine tuned metadata mapping
• Bug fixes / Exception handling
• Publish Package

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T H A N K Y O U

nmrXiv

D A T A S U B M I S S I O N

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(mockup based on feedback)

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Drag and Drop

Sample -1 d

Sample - 2

Sample - 3

Sample - 4

Project > Study

User Authentication

STEP 1: FILE UPLOAD

nmrXiv Data Submission

Sample 1

Sample 3

Sample 2

DATA UPLOADED IN PREVIOUS STEP

STEP 2: SIMILARITY SEARCH AND SPECTRA - ATOM ASSIGNMENTS

nmrXiv Data Submission

ADD MOLECULE(S)

Instrument Data

PREV

NEXT

NMRShiftDB

SHERLOCK

NMRium AUTO Assignments

Mol 1 95%

Mol 2 03%

Mol 3 01%

Mol 4 -

Cancel

STEP 3: META DATA (Minimum information requirements / validations will be implemented at this stage )

nmrXiv Data Submission

SAMPLE DETAILS PROVIDED

Sample Preparation Protocol

Assay Protocol

Provenance

License Information*

Cancel

STEP 4: COMPLETE

nmrXiv Data Submission

CLOSE

SAMPLE DETAILS PROVIDED

Data Set IDs

Release Date

Citation

Private

Public

Visibility

Author, 1., & Author, 2.. (2022). FAIR, consensus-driven NMR data repository and computational platform. The ultimate goal is to accelerate broader coordination and data sharing among natural product (NP) researchers by enabling storage, management, sharing and analysis of NMR data.

Download Zip

MD5 hashmap

Embed </>

Share

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T E S T S I T E

Currently in pre-beta development stage

Test site: https://dev.nmrxiv.org

Source code: https://github.com/NFDI4Chem/nmrxiv

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nmrXiv

D A T A S U B M I S S I O N

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Drag and Drop

Sample -1 d

Sample - 2

Sample - 3

Sample - 4

Project > Study

User Authentication

STEP 1: FILE UPLOAD

nmrXiv Data Submission

Sample 1

Sample 3

Sample 2

DATA UPLOADED IN PREVIOUS STEP

STEP 2: SIMILARITY SEARCH AND SPECTRA - ATOM ASSIGNMENTS

nmrXiv Data Submission

ADD MOLECULE(S)

Instrument Data

PREV

NEXT

NMRShiftDB

SHERLOCK

NMRium AUTO Assignments

Mol 1 95%

Mol 2 03%

Mol 3 01%

Mol 4 -

Cancel

STEP 3: META DATA (Minimum information requirements / validations will be implemented at this stage )

nmrXiv Data Submission

SAMPLE DETAILS PROVIDED

Sample Preparation Protocol

Assay Protocol

Provenance

License Information*

Cancel

STEP 4: COMPLETE

nmrXiv Data Submission

CLOSE

SAMPLE DETAILS PROVIDED

Data Set IDs

Release Date

Citation

Private

Public

Visibility

Author, 1., & Author, 2.. (2022). FAIR, consensus-driven NMR data repository and computational platform. The ultimate goal is to accelerate broader coordination and data sharing among natural product (NP) researchers by enabling storage, management, sharing and analysis of NMR data.

Download Zip

MD5 hashmap

Embed </>

Share

Meta Data Model

https://isa-tools.org/

ISA Limitations

(Repository perspective)

• Templates
• Redundant data
• Captures rich description of the experimental metadata but not of the repository

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Need to extend beyond the ISA Models and give total flexibility to the end user to define their own templates while still being complaint with ISA Specifications.

Data/File Types

- CeNAPT data of 42 IMPS, some fully interpreted and with HiFSA profiles: https://dataverse.harvard.edu/dataverse/cenapt

- Data from all our publications with NMR data (39 papers, have not counted but should be 100-200 cpds) since 2015: https://dataverse.harvard.edu/dataverse/gfpuic

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1H, HSQC, HMBC plus COSY, NOESY, 13C/APT

Any minimum requirements?

Any format conditions (zipped, un/processed, TopSpin/Xwinnmr, size)?

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Data Conversions

Redis / RabbitMQ Queues (Jobs)

Python Job - Dispatcher REST

Web Service

Interacts with the Repository core for authentication/authorization, projects ~ storage details

nmrml2ISA

mzml2ISA

Bruker Converter

ML models

Analysis modules

NMR Workflow

MS Workflow

Raman Workflow

Argo Workflows - https://argoproj.github.io/argo-workflows

GKE: https://medium.com/sysmap-labs/how-to-install-and-configure-argo-workflows-on-gke-9dde654c145e

Python SDK: https://github.com/argoproj/argo-workflows/tree/master/sdks/python

Considerations before choosing Argo: https://medium.com/datamindedbe/what-to-consider-before-choosing-argo-workflow-54f6067307a8

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Argo Workflows is an open source container-native workflow engine for orchestrating parallel jobs on Kubernetes. Argo Workflows is implemented as a Kubernetes CRD (Custom Resource Definition).

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- REST API

- S3 support

- Opensource

- GUI

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Interacts with python dispatcher via REST API

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Every cluster job is run as workflow. Some workflows can have one single node (example - converters).

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Argos yaml to CWL conversion and vice versa is under development.

Data Conversions

https://github.com/NFDI4Chem/formaTAPIRest

Core Trust Seal

https://zenodo.org/record/3638211#.YOauSxNKhCU; Remark by Ti: Repos with CTS are explicitly recommended in author guidelines of some journals e.g. OpenChemistry (DeGryter).

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ISO 16290:2013 (Technology Readiness Levels)

https://www.iso.org/standard/56064.html

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DOI

https://support.datacite.org/docs/api-create-dois

DOI Registration Agencies: https://www.doi.org/RA_Coverage.html

Backend

nmrXiv

T E C H N O L O G Y S T A C K

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Backend

Ruby (Ruby on Rails)

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Vs

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Python (Django)

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Vs

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PHP (Laravel)

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Backend

https://trends.builtwith.com/framework/Laravel

https://trends.builtwith.com/framework/Ruby-on-Rails

https://trends.builtwith.com/framework/Django-Language

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Backend - Trends

Backend

https://laravel.com/

Source : https://laravel.com and wikipedia

�

Amazon S3 compatible server-side software storage stack, it can handle unstructured data such as photos, videos, log files, backups, and container images with currently the maximum supported object size of 5TB

Source : https://min.io and wikipedia

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Cache

Search

Instant search: https://www.meilisearch.com/

Big Data: ELK Stack: Elasticsearch, Logstash, Kibana

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Cache: https://redis.io/

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Status Page - Example Dropbox

Easily communicate real-time status to our users

Source : https://www.atlassian.com/software/statuspage and wikipedia

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Frontend

Frontend

https://vuejs.org/

Source : https://vuejs.org and wikipedia

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Mandate

Acquisition

Deposition

Processing

Distribution

Discovery

Archiving

Repurposing

Analysis

Color

Key

Journal,Institution, Funder

User

nmrXiv Platform

Authentication and Authorisation

Data life cycle / Versioning

https://github.com/ScienceObjectsDB/Documentation

Project 1

Project 2

Project 3

Study

Dataset

Dataset

Dataset

Dataset

Dataset

Dataset

Dataset

Sample

Assay

Spectra

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Directory structure

https://de.wikipedia.org/wiki/BagIt

https://github.com/whikloj/BagItTools

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BagIt is a set of hierarchical file layout conventions designed to support storage and transfer of digital content.

ISA formats

https://isa-tools.org/

https://www.ebi.ac.uk/metabolights/MTBLS1/assays

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ISA Tab

ISA Json

DataCite

OpenAIRE

Bioschema

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IUPAC FAIRSpec

I/O: Data Schemas

https://schema.datacite.org/meta/kernel-4.4

https://guidelines.openaire.eu/en/latest/data/index.html

https://bioschemas.org/

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Data Formats

Support all major �instrument raw output�file formats and open �data formats.

Data Versioning

Versioning is natively built around data models at the repository level. In addition to that we support DOI Versioning: https://support.datacite.org/docs/versioning

The version number follows semantic versioning principles. Can have additional tags like "stable", "current" or "dev" that link to a specific version and can be updated and separately queried.

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Ontologies

Giving (meta)data meaning with ontologies

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Ontology driven input fields, textareas not only provide rich user experience but also capture rich metadata ensuring machine readability

nmrXiv - Ontology component

Smart compose - Ontologies / Controlled Vocabulary driven

Compatible with

(use React components in Vue app)

Source : https://vuejs.org and https://reactjs.org

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Deployments

https://github.com/NFDI4Chem/repo-helm-charts

https://docs.nmrxiv.org/docs/developer-guides/deployment/helm

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