lucy-ng:dereplicate

Dereplicate observed 13C NMR shifts against reference databases to identify known compounds.

3|2|Updated Jan 8, 2026
One-click install
npx skills add https://github.com/steinbeck/lucy-ng --skill lucy-ng-dereplicate
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: lucy-ng:dereplicate
Source: https://github.com/steinbeck/lucy-ng/tree/main/skill/dereplicate
Command: npx skills add https://github.com/steinbeck/lucy-ng --skill lucy-ng-dereplicate

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Dereplication reduces wasted effort by quickly determining whether observed 13C NMR shifts correspond to known compounds, enabling faster decision-making about pursuing full structure elucidation.

Core Features & Use Cases

  • Database-backed 13C matching: compare observed shifts to curated databases (e.g., COCONUT, NMRShiftDB) to surface candidate known compounds.
  • Lightweight screening: supports quick checks early in natural product workflows to decide if CASE is warranted.
  • Flexible data input: accepts Bruker 13C spectra or peak lists and requires a user-provided molecular formula.

Quick Start

Run the CLI command to perform a dereplication: lucy dereplicate c13 <bruker_13c_path> <formula> -n 10

Frequently Asked Questions about lucy-ng:dereplicate

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I dereplicate 13C NMR shifts against known natural product databases?▼

To dereplicate 13C NMR data, you run the CLI command 'lucy dereplicate c13' with your Bruker spectral path or peak list and a molecular formula. The tool matches your shifts against the local database to return candidate known compounds.

What is 13C NMR dereplication in natural product discovery?▼

13C NMR dereplication is a lightweight screening technique that matches observed carbon shifts to reference databases to quickly identify known compounds. It helps researchers decide early whether full structure elucidation or CASE is necessary.

Can I use a peak list instead of raw Bruker 13C spectral data for dereplication?▼

Yes, the dereplication workflow accepts both raw Bruker 13C spectra and peak lists as input. You must also provide a molecular formula to match your data against the reference database and retrieve candidate known compounds.

Do I need to provide a molecular formula for 13C NMR dereplication?▼

Yes, a user-provided molecular formula is required for dereplication. It filters the database search to ensure observed 13C NMR shifts are matched against structurally plausible known compounds, enabling accurate early-stage natural product screening.

When should I use 13C dereplication instead of full computer-assisted structure elucidation?▼

Use 13C dereplication for early-stage natural product screening to quickly check if observed shifts match known compounds. If dereplication confirms a known structure, full computer-assisted structure elucidation is unnecessary, saving significant time and effort.

What databases are used for matching 13C NMR shifts during dereplication?▼

Dereplication matches observed 13C NMR shifts against curated reference databases such as COCONUT and NMRShiftDB. The tool queries a local database to automatically discover and surface candidate known compounds based on your spectral data.