APIs and reference standards
7,347 records, including associated and isotope-labelled standards.
Browse the API collectionAltox Substance & Toxicology Database
Chemical identity, molecular properties and toxicological assessment resources
Explore 39,049 preserved catalogue designations with structures, identifiers and calculated molecular descriptors.
Pharmaceutical impurities
31,702 records preserving distinct impurity and related-compound designations.
Browse the impurity collectionExplore each molecular record
Each page combines chemical identifiers, a 2D structure, 33 calculated properties and attributes, a descriptor radar, structural feature counts and element composition. Service links connect the record to relevant Altox assessment resources.
Records with the same structure may have different catalogue or pharmacopoeial designations. These names remain separate.