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β-Estradiol CAS 50-28-2

Chemical name: β-Estradiol

Synonymous names: Estradiol；

17beta-Estradiol；

Dihydrofolliculin

CAS No:50-28-2

Molecular formula:C18H24O2

Molecular weight:272.39

EINECS:200-023-8

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Structural formula：

Product Description：

Items	Standard Result	Result
Appearance	White or creamy white, crystalline powder	conforms
Identification	IR	Conforms
Melting point	173 ~ 179℃	175.5～174.4℃
Water	3.5%MAX	3.17%
Specific rotation	+76° ~ +83°	+78.9°
Residual solvents	Methanol≤3000ppm ethanol ≤5000ppm	conforms
Related substances	Any individual impurity ≤0.5% Total impurities ≤1.0%	0.08% 0.40%
Assay	97.0 -103.0%	99.45%
Micron	100%≤20μm	100%≤20μm

Storage conditions:Store in a cool, ventilated warehouse; keep away from fire and heat sources; store separately from oxidizers, oxygen, and edible chemicals, and do not mix them.

Packing:This product is packed in 5KG or 1KG aluminium foil bag, also can be customised according to customer's requirement.