Search chemicals by CAS number
8,020 chemicals indexed by CAS Registry Number. Every CAS number shown on this website has passed the official check-digit test. Enter a CAS number with or without hyphens, or browse by its first digit.
10…667 CAS numbers11…354 CAS numbers12…387 CAS numbers13…467 CAS numbers14…296 CAS numbers15…150 CAS numbers16…142 CAS numbers17…115 CAS numbers18…107 CAS numbers19…77 CAS numbers2…734 CAS numbers3…606 CAS numbers4…409 CAS numbers5…883 CAS numbers6…799 CAS numbers7…767 CAS numbers8…513 CAS numbers9…547 CAS numbers