β-Amanitin

RNA polymerase II inhibitor

Biological activity like α-amanitin (Prod. No. ALX-350-270), but contains a carboxy group which is useful for coupling reactions.

Formula:	C₃₉H₅₃N₉O₁₅S

MW:	920.0

Purity:	≥90%

Formulation:	White to off-white powder.

CAS:	21150-22-1

MI:	14: 373

Source/Host:	Isolated from Amanita phalloides mushrooms.

Solubility:	Soluble in DMSO, dimethyl formamide, methanol or water.

Long Term Storage:	-20°C

Use/Stability:	Dilute with buffer immediately prior to use. Product is destroyed by concentrated acid or base.

Hazard:	VERY TOXIC.

Handling:	Protect from light.