Sub Group: Retinoids Alphabetic Listing Catalog Number: 13374 Formula: C20H28O2 CAS Number: 3/8/5300 Molecular Weight: 300.42 Synonyms: (2E,4E,6Z,8E)-3,7-Dimethyl-9-(2,6,6-trimethylcyclohex-1-enyl)nona-2,4,6,8-tetraenoic Acid9-cis-tretinoin