curated chemical list

A curated chemical list is a fixed roster of substances assembled around one theme - a structure class or a use category - and shipped as a file rather than as a search result. The cataloged example is EPA's CompTox Chemicals Dashboard, whose record states an estimated size of "1,376,722 chemicals searchable; 300+ curated chemical lists" and describes "downloadable chemical lists" as a delivery channel. The dashboard's long description ties those lists to structure or category curation, sitting alongside DSSTox files on its bulk-download pages.

The distinction from search is reproducibility. A batch search over identifiers answers today's question; a curated list freezes a set so every teammate and every pipeline run starts from identical membership. On CompTox each list membership also surfaces per substance, so a DTXSID record shows which of the 300-plus rosters contain it.

Regulatory screening lives or dies on defensible scope. If your hazard review starts from an ad-hoc query, every rerun can add or drop substances and no reviewer can reproduce the population you screened. A published curated list converts that argument into a versioned artifact you can cite.

• Reconstruction costs real time. Rebuilding a themed subset from a 1,376,722-substance inventory means re-running queries and defending each filter; the dashboard's downloadable lists remove that step.
• Membership is auditable. When a list ships as a file from the source that curated it, gaps trace to the publisher rather than to your query logic.
• Licensing stays simple. The cataloged record marks CompTox data free of all copyright restrictions for commercial and non-commercial use, so list files move through vendor reviews without negotiation.

1. Confirm the count and theme. CompTox documents more than 300 curated chemical lists based on structure or category - ask any other source to state how many rosters it maintains and on what basis.

1. Check downloadability, not just browsing. The cataloged record names "downloadable chemical lists" among delivery channels; a list you can only click through cannot anchor a pipeline.

1. Verify per-substance membership surfacing. On CompTox a DTXSID page shows list membership; test whether your candidate source lets you trace a substance back to its lists.

1. Pair it with programmatic access. CompTox complements its lists with batch search and CTX APIs, so confirm bulk retrieval exists before committing to one file format.

1. Note the release cadence. The dashboard badge reads v2.8.0 with last updated October 2025 - date-stamp whichever list version your analysis consumes.

Entries that sit next to curated chemical list in this glossary:

• batch-search
• dsstox-substance-identifier
• functional-use-category