# Chempirical Molecules API

**Canonical:** https://apis.io/apis/chempirical/chempirical-molecules-api/  
**Provider:** Chempirical — https://apis.io/providers/chempirical/  
**Base URL:** https://chempirical.com/api  
**Documentation:** https://chempirical.com/api/

Chempirical Molecules API is one of 4 APIs that [Chempirical](https://apis.io/providers/chempirical/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. This API exposes 6 JSON Schema definitions. Tagged areas include Molecules. The published artifact set on APIs.io includes an OpenAPI specification and 6 JSON Schemas.

The Molecules API from Chempirical — 1 operation(s) for molecules.

## Operations (2)

| Method | Path | Summary |
|---|---|---|
| GET | `/api/molecules/{moleculeid}` | One compound with names, formula, identifiers, molar and exact mass, density… |
| POST | `/api/molecules/{moleculeid}` | POST /api/molecules/64-17-5 |

## Machine-readable artifacts (7)

- **OpenAPI** — https://artifacts.apis.io/chempirical/openapi/chempirical-molecules-api-openapi.yml
- **JSONSchema** — https://artifacts.apis.io/chempirical/json-schema/chempirical-get-api-molecules-moleculeid-response-schema.json
- **JSONSchema** — https://artifacts.apis.io/chempirical/json-schema/chempirical-get-api-reactions-henry-nitroaldol-response-schema.json
- **JSONSchema** — https://artifacts.apis.io/chempirical/json-schema/chempirical-get-api-apiid-response-schema.json
- **JSONSchema** — https://artifacts.apis.io/chempirical/json-schema/chempirical-get-api-reactions-henry-nitroaldol-scale-response-schema.json
- **JSONSchema** — https://artifacts.apis.io/chempirical/json-schema/chempirical-post-api-molecules-moleculeid-response-schema.json
- **JSONSchema** — https://artifacts.apis.io/chempirical/json-schema/chempirical-get-api-molecule-svg50782-response-schema.json

## Other Chempirical APIs (3)

- [Chempirical Chempirical (Nitramine) API](https://apis.io/apis/chempirical/chempirical-chempirical-nitramine-api-api/)
- [Chempirical Molecule Svg API](https://apis.io/apis/chempirical/chempirical-molecule-svg-api/)
- [Chempirical Reactions API](https://apis.io/apis/chempirical/chempirical-reactions-api/)

## Tags

Molecules

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/chempirical/chempirical-molecules-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/chempirical/.