Api Endpoint

Saylor Innovations Chemistry

Chemical compound lookup in PubChem by name, CAS, CID, SMILES or InChIKey - formula, weight, properties and GHS hazards

Open interactive test console

Offering

Provider: saylorinnovations.com
Method: GET
Offering type: Api Endpoint
Transport type: http
Category: Science And Education
Delivery: Not provided
Pricing model: Not provided
x402 version: 2

Endpoint context

URL: https://saylorinnovations.com/api/chem/compound/caffeine
MIME type: application/json
First seen: 2026-10-16T01:51:20.002Z
Last seen: 2026-11-04T01:47:47.262Z
Tags: chem, compound, chemical, pubchem, name, chemistry, compounds, hazards, ghs

Website

Payment pricing

x402 payment terms are the authoritative price for calling this endpoint.

Payment option 1: 0.01 USDC
Atomic price: 10000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Payment option 2: 0.01 USDC
Atomic price: 10000 · Network: eip155:137 · Asset: USDC · Scheme: exact
Payment option 3: 0.01 USDC
Atomic price: 10000 · Network: eip155:42161 · Asset: USDC · Scheme: exact
Payment option 4: 0.01 USDC
Atomic price: 10000 · Network: solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · Asset: USDC · Scheme: exact
Payment option 5: 10000 atomic units
Atomic price: 10000 · Network: solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · Asset: Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB · Scheme: exact

Raw x402 terms

[
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    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "10000",
    "payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa"
  },
  {
    "scheme": "exact",
    "network": "eip155:137",
    "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
    "amount": "10000",
    "payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa"
  },
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    "scheme": "exact",
    "network": "eip155:42161",
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    "amount": "10000",
    "payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa"
  },
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    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "10000",
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    "scheme": "exact",
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    "amount": "10000",
    "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7"
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]

Observed health

Status: Healthy
Latest latency: 3107 ms
Average latency: 1509 ms
HTTP status: 402
Last checked: 2026-11-04T01:47:47.256Z
Reachability: 100% over 7 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string",
      "const": "http"
    },
    "method": {
      "type": "string",
      "enum": [
        "GET",
        "POST",
        "PUT",
        "PATCH",
        "DELETE",
        "HEAD"
      ]
    },
    "pathParams": {
      "type": "object",
      "properties": {
        "id": {
          "type": "string",
          "description": "compound name, CAS number (50-78-2) or PubChem CID (path)"
        }
      },
      "required": [
        "id"
      ]
    },
    "queryParams": {
      "type": "object",
      "properties": {
        "smiles": {
          "type": "string",
          "description": "or look up by SMILES instead (query)"
        },
        "inchikey": {
          "type": "string",
          "description": "or by InChIKey (query)"
        }
      },
      "required": [
        "smiles",
        "inchikey"
      ]
    }
  },
  "required": [
    "type",
    "method",
    "pathParams",
    "queryParams"
  ],
  "additionalProperties": false
}

Output schema

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string",
      "const": "json"
    },
    "description": {
      "type": "string"
    },
    "example": {
      "type": "object",
      "additionalProperties": true,
      "properties": {
        "found": {
          "type": "boolean",
          "description": "True when the lookup matched a record"
        },
        "query": {
          "type": "string",
          "description": "The query as the server interpreted it"
        },
        "cid": {
          "type": "number"
        },
        "name": {
          "type": "string",
          "description": "Name"
        },
        "iupac_name": {
          "type": "string",
          "description": "Iupac name"
        },
        "cas_number": {
          "type": "string",
          "description": "Cas number"
        },
        "formula": {
          "type": "string",
          "description": "Formula used for the calculation"
        },
        "molecular_weight": {
          "type": [
            "number",
            "null"
          ],
          "description": "Molecular weight"
        },
        "exact_mass": {
          "type": "number",
          "description": "Exact mass"
        },
        "smiles": {
          "type": "string"
        },
        "inchi": {
          "type": "string"
        },
        "inchikey": {
          "type": "string",
          "description": "InChIKey structure hash"
        },
        "properties": {
          "type": "object",
          "additionalProperties": true,
          "properties": {
            "xlogp": {
              "type": "number"
            },
            "tpsa": {
              "type": "number"
            },
            "h_bond_donors": {
              "type": "integer",
              "description": "H bond donors"
            },
            "h_bond_acceptors": {
              "type": "integer",
              "description": "H bond acceptors"
            },
            "rotatable_bonds": {
              "type": "integer",
              "description": "Rotatable bonds"
            },
            "heavy_atoms": {
              "type": "integer",
              "description": "Heavy atoms"
            },
            "charge": {
              "type": "integer"
            },
            "complexity": {
              "type": "integer"
            }
          }
        },
        "hazards": {
          "type": "object"
        },
        "description": {
          "type": "array",
          "items": {
            "type": "string"
          },
          "description": "Array shape inferred from the captured response example."
        },
        "synonyms": {
          "type": "array",
          "items": {
            "type": "string"
          },
          "description": "Array shape inferred from the captured response example."
        },
        "structure_image": {
          "type": "string",
          "description": "Structure image"
        },
        "url": {
          "type": "string",
          "description": "Canonical URL"
        },
        "source": {
          "type": "string",
          "description": "Data source the values come from"
        }
      },
      "required": [
        "found"
      ]
    }
  },
  "required": [
    "type"
  ]
}