13312-52-2

The 9-cis isomer of β-Caroten (C184250). Carrots are one of the highest dietary sources of β-carotene and are naturally high in the (all-E)-β-carotene isomer, which has higher bioavailability, provitamin A activity, and antioxidant capacity compared to Z (cis) isomers.

ChEBI: 9-cis-beta-carotene is a carotenoid having the structure of beta-carotene but with a cis double bond at the 9,10-position. It has a role as a biological pigment.

(9Z)-β-Carotene or 9-cis-β-carotene is a 9-cis retinoic acid precursor in intestinal mucosal glands of humans. 9-cis retinoic acid is a ligand for nuclear receptor and retinoid X receptor (RXR). 9-cis-β-carotene participates in gene regulation. It is majorly present in liver. 9-cis-β-Carotene supplementation inhibits the progression of atherosclerosis. 9-cis-β-carotene may restore photoreceptors in retinitis pigmentosa (RP) and retinal dystrophies.