C4582
synthetic
200
≥95% (HPLC)
crystalline
α-carotene, essentially free
dark red-purple to red-brown
178-179 °C
hexane: soluble 100 μg/mL
DMSO: 30 μg/mL
H2O: insoluble
2160-2280 at 478-479 nm in hexane at 1% (vs. 2280, lit.)
2450-2590 at 450-452 nm in hexane at 1% (vs. 2590, lit.)
?20°C