has role retinal C20H28O InChI=1S/C20H28O/c1-16(8-6-9-17(2)13-15-21)11-12-19-18(3)10-7-14-20(19,4)5/h6,8-9,11-13,15H,7,10,14H2,1-5H3 CHEBI:15035 NCYCYZXNIZJOKI-UHFFFAOYSA-N 284.21402 Reaxys:2055098 retinal 284.43572 0 [H]C(=O)C=C(C)C=CC=C(C)C=CC1=C(C)CCCC1(C)C 3,7-dimethyl-9-(2,6,6-trimethylcyclohex-1-en-1-yl)nona-2,4,6,8-tetraenal MetaCyc:Retinals chebi_ontology An enal that consists of 3,7-dimethyl-9-nona-2,4,6,8-tetraenal (double bond geometry unspecified) carrying a 2,6,6-trimethylcyclohex-1-en-1-yl group at the 9-position. retinals enal human metabolite