| Message: | Alpha-estradiol 17A-estradiol; CAS 57-91-0 with USP assured
Specifications
17 alpha-Estradiol
Hormones
For anti-aging face cream
17 alpha-Estradiol
Synonyms: Alpha-estradiol; 17A-estradiol
CAS: 57-91-0
EINECS: 200-354-8
Molecular Formula: C18H24O2
Molecular Weight: 272.39
Molecular Structurer:
Appearance :hite or off-white crystalline powder
Assay :99%min.
Melting range:216-224 oC
Specific rotation:+52o to +60o
Loss on drying :3.5%MAX
Monor impurity :0.2%MAX
Total impurities:1.0% max
17 alpha-Estradiol is a kind of estrogen that can promote and regulate the female sex organs and sexual characteristics of normal development. To promote development of ductal hyperplasia, but in larger doses, can inhibit the release of anterior pituitary prolactin, and reduction of milk secretion.
Cosmeceutical use: Anti-aging face creams.
Storage: Stored in cool place, keep container tightly closed in a dry and well-ventilated place.
Shelf life: 2 years in unopened container.
Items
17 alpha-Estradiol
Appearance
White or off-white crystalline powder
Identification
IR
Assay
99% min
Melting range
216-224 o C
Specific rotation
+52 o to +60 o
Loss on drying
3.5% max
Monor impurity
0.2% max
Total impurities
1.0% max
Appearance
White or off-white crystalline powder
Identification
IR
Assay
99% min
Melting range
216-224 o C
Specific rotation
+52 o to +60 o
Loss on drying
3.5% max
Monor impurity
0.2% max
Total impurities
1.0% max
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