STIGMATELLIN manufacturers and suppliers

STIGMATELLIN suppliers

STIGMATELLIN

CAS:: 91682-96-1

MF:: C30H42O7

MW:: 514.65

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Properties

Melting point:: 129°C

Boiling point:: 520.22°C (rough estimate)

Density: 1.0924 (rough estimate)

refractive index: 1.5800 (estimate)

storage temp.: −20°C

pka: 8.67±0.40(Predicted)

Safety Information

Symbol(GHS): GHS06

Signal word: Danger

Hazard statements: H300

Precautionary statements: P264-P270-P301+P310-P321-P330-P405-P501

Hazard Codes: T

Risk Statements: 25

Safety Statements: 45

RIDADR: UN 2811 6.1/PG 2

WGK Germany: 3

RTECS: GB7972000

F: 8-10-23

HazardClass: 6.1(a)

PackingGroup: II

Use

Stigmatellin A is stable in aqueous solution at neutral pH but decomposes at pH <5. It is purified by recrystallisation from toluene/hexane. It has UV max: nm () 248sh (4,100), 258 (59,500), 267 (65,500)max: 3550m, 1645chs, 1635ss, 1620ss, 1590s, 1510m and 905m cm-1. It gives colour reactions at 110o with vanillin/H2SO4 (grey), Ce(IV)/(NH4)2SO4 (yellow) and phosphomolybdate (blue-grey). [H.fle et al. Justus Liebigs Ann Chem 1882 1984.] It inhibits electron transport [Jagow & Link Methods Enzymol 126 253 1986, Robertson et al. Biochemistry 32 1310 1933], and has antibiotic properties [Kunze et al. J Antibiot 37 454 1984]. The 7t,9t,11c-isomer is Stigmatellin B.

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