γ-Carotene is a carotenoid, and is a biosynthetic intermediate for cyclized carotenoid synthesis in plants. It is formed from cyclization of lycopene by lycopene cyclase epsilon. Along with several other carotenoids, γ-Carotene is a vitamer of vitamin A in herbivores and omnivores. Carotenoids with a cyclized, beta-ionone ring can be converted to vitamin A, also known as retinol, by the enzyme Beta-carotene 15,15'-dioxygenase; however, the bioconversion of gamma-carotene to retinol has not been well-characterized.

CAS：472-93-5
中文别名：
英文别名：gamma-carotene;β,ψ-Carotene;2-[(1E,3E,5E,7E,9E,11E,13E,15E,17E,19E)-3,7,12,16,20,24-hexamethylpentacosa-1,3,5,7,9,11,13,15,17,19,23-undecaenyl]-1,3,3-trimethylcyclohexene;CPD1F-126;
分子式：C40H56
分子量：536.873
精确质量：536.438
Psa：0.0
Logp：12.7719

UNII：DH369M0SOE

密度：0.914g/cm3
沸点：657.8ºC at 760mmHg
闪点：348.4ºC
折射率：1.547
蒸汽压：1.89E-16mmHg at 25°C