vitamin A aldehyde

Retinaldehyde A carotenoid constituent of visual pigments. It is the oxidized form of retinol which functions as the active component of the visual cycle. It is bound to the protein opsin forming the complex rhodopsin. When stimulated by visible light, the retinal component of the rhodopsin complex undergoes isomerization at the 11-position of the double bond to the cis-form; this is reversed in "dark" reactions to return to the native trans-configuration.

[1. Retinol oxidized to a terminal aldehyde; retinal; a carotene released (as all-trans-retinal) in the bleaching of rhodopsin by light and the dissociation of opsin in the vision cycle.

Molecular Formula: C₂₀H₂₈O

InChI: InChI=1/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

InChIKey: InChIKey=NCYCYZXNIZJOKI-UHFFFAOYAX
SMILES: CC1=C(C(CCC1)(C)C)C=CC(=CC=CC(=CC=O)C)C

Names:
    all-trans-Retinal
    all-trans-Retinene
    all-trans-Vitamin A aldehyde
    axerophthal
    retinaldehyde
    retinal
    retinene
    vitamin A aldehyde
    116-31-4
    3,7-dimethyl-9-(2,6,6-trimethyl-1-cyclohexenyl)nona-2,4,6,8-tetraenal

Registries:
    PubChem CID 1070
    PubChem ID 3136