Diethylstilbestrol CAS56-53-1

Diethylstilbestrol indications:

1. Supplementary estrogen deficiency in the body, such as atrophic vaginitis, female gonadal dysplasia,

menopausal syndrome, senile vaginal dryness and vaginitis, ovariectomy, primary ovarian deficiency.

2. breast cancer, postmenopausal and male advanced breast cancer, who can not be operated on.

3. prostate cancer can not be treated with advanced surgery.

4. prevent postpartum lactation.

ITEM	STANDARD	RESULT
Appearance	A white or almost white, crystalline powder;	White powder
Solubility	practically insoluble in water, freely soluble in alcohol. It dissolves in solutions of the alkali hydroxides.	Complies
Identification	A. Ultraviolet Absorption. Absorptivities at 230 to 350nm do not differ by more than 3.0%.	A. Positive
	B.The retention time of the major peak in the chromatogram of the Assay preparation corresponds to that in the chromatogram of the standard preparation, as obtained in the assay.	B. Positive
Acidity or alkalinity	A solution of 100 mg in 5 mL of neutralized 70% alcohol is neutral to litmus.	Complies
Melting point	169~175℃	170-171℃
Loss on drying	Not more than 0.5%	0.11%
Residue on ignition	Not more than 0.05%	0.02%
Residual Solvent	Pyridine≤200ppm	Complies
	Tetahydrofuran≤720ppm	Complies
	Ethanol≤500ppm	Complies
Assay	97.0%-100.5%(C18H20O2) calculated on the dried basis	99.6%

Model:	MOS 56-53-1
Place of Origin:	Zhejiang,China (Mainland)

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