High purity 99% 17 alpha-Estradiol powder alpha Estradiol CAS 57-91-0
COA
57-91-0
Pharmaceutical Grade
99%
shenzhen
None
1kg/bag 25kg/drum
2026-09-20
API
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Product Description
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Seller Information
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DescriptionECHEMI Editorial ReferenceAlpha-Estradiol is a weak estrogen and a 5α-reductase inhibitor which is used as a topical medication in the treatment of androgenic alopecia.
Solid
17alpha-estradiol is an estradiol that is estra-1,3,5(10)-triene substituted by hydroxy groups at positions 3 and 17 (the 17alpha stereoisomer). It has a role as a geroprotector and an estrogen. It is a 17alpha-hydroxy steroid, a 3-hydroxy steroid and an estradiol.CertificatesBasic Info-
Product Name:
α-Estradiol
Other Name:Estra-1,3,5(10)-triene-3,17-diol,(17α)-;17α-Estradiol;(17α)-Estra-1,3,5(10)-triene-3,17-diol;3,17-Dihydroxyestratriene;3,17α-Dihydroxyoestra-1,3,5(10)-triene;α-Estradiol;Estra-1,3,5(10)-triene-3,17α-diol;1,3,5-Estratriene-3,17α-diol;Epiestradiol;Oestra-1,3,5(10)-triene-3,17α-diol;3,17α-Dihydroxyestra-1,3,5(10)-triene;17α-Oestradiol;17-Epiestradiol;Epiestrol;13β-Methyl-1,3,5(10)-gonatriene-3,17α-diol;Alfatradiol;NSC 20293;MITO 4509;MIGENIX
CAS No.:57-91-0
Molecular Formula:C18H24O2
InChIKeys:InChIKey=VOXZDWNPVJITMN-SFFUCWETSA-N
Molecular Weight:272.38
Exact Mass:272.38
EC Number:200-023-8
UNII:3VQ38D63M7
NSC Number:20293
DSSTox ID:DTXSID8022377
HScode:29372390
Categories:
Characteristics-
PSA:
40.5
XLogP3:4
Appearance:white with slight yellow cast powder
Density:1.2±0.1 g/cm3
Melting Point:221.5 °C
Boiling Point:445.9°C at 760 mmHg
Flash Point:209.6±23.3 °C
Refractive Index:1.599
Water Solubility:ethanol: 50 mg/mL, clear, colorless
Storage Conditions:0-6°C
Specific rotation:D20 +53 to +56° (c = 0.9 in dioxane)
Hazard IdentificationClassification of the substance or mixture
Carcinogenicity, Category 2
Reproductive toxicity, Category 1A
Reproductive toxicity, Additional category for effects on or via lactation
GHS label elements, including precautionary statements
Pictogram(s) 
Signal word Danger
Hazard statement(s) H351 Suspected of causing cancer
H361 Suspected of damaging fertility or the unborn child
H362 May cause harm to breast-fed children
Precautionary statement(s) Prevention P203 Obtain, read and follow all safety instructions before use.
P280 Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/...
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P263 Avoid contact during pregnancy and while nursing.
P264 Wash ... thoroughly after handling.
P270 Do not eat, drink or smoke when using this product.
Response P318 IF exposed or concerned, get medical advice.
Storage P405 Store locked up.
Disposal P501 Dispose of contents/container to an appropriate treatment and disposal facility in accordance with applicable laws and regulations, and product characteristics at time of disposal.
Other hazards which do not result in classification
no data available
Handling and StoragePrecautions for safe handling
Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.
Conditions for safe storage, including any incompatibilities
Store the container tightly closed in a dry, cool and well-ventilated place. Store apart from foodstuff containers or incompatible materials.
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Seller Information
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Business Type:
Trader
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Main Products:
API
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Location:
1806 Building B,Science Building,Hongkong Road,Wuhan City,Hubei Province
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Year of Establishment:
2024
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Country Product Purchase Quantity Date Posted Post an enquiry for this product
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