Properties: Long, deep red needles from carbon disulfide + ethanol, from methylene chloride + methanol, mp 172-173°. Absorption max, trans-form (petroleum ether): 446, 472, 505 nm (E1%1cm 2250, 3450, 3150). One gram dissolves in 50 ml carbon disulfide, in 3 l boiling ether, in 12 l boiling petr ether, in 14 l hexane at 0°. Sol in chloroform, benzene. Almost insol in methanol, ethanol, water.
Melting point: mp 172-173°
Absorption maximum: Absorption max, trans-form (petroleum ether): 446, 472, 505 nm (E1%1cm 2250, 3450, 3150)
Derivative Type: 15,15¢-cis-Form
CAS Registry Number: 59092-07-8
Properties: mp ~105° then solidifies again. Absorption max (petroleum ether): 361, 444, 470, 502 nm (E1%1cm 1110, 1280, 1660, 1280).
Melting point: mp ~105° then solidifies again
Absorption maximum: Absorption max (petroleum ether): 361, 444, 470, 502 nm (E1%1cm 1110, 1280, 1660, 1280)
产品链接: 502-65-8››