Product Name: Estradiol Valerate USP41

Retest Date:2 Years

CAS Number: 979-32-8

Items

Specification

Appearance

White or almost white crystalline powder

Identification

By IR and HPLC

Appearance of solution

Solution S is clear and colourless

Specific optical rotation

+41~ +47°

Water

≤0.1%

Melting range

143~ 150℃

Related substance

Impurity A ≤0.5%

Impurity C ≤0.5%

Impurity D ≤0.5%

Impurity E ≤0.15%

Individual unknown impurity ≤0.1%

Total impurities ≤1.0%

Particle size

90%≤10μm

Assay (on dried basis)

97.5~102.0%

Free acid

(expressed as valeric acid )

≤0.1%

Conclusion:The product complies with USP41 standard.