High purity Dehydroepiandrosterone DHEA CAS No.:53-43-0 CAS NO.53-43-0

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Name: Dehydroepiandrosterone  
Synonyms：TRANS-DEHYDROANDROSTERONE;PRASTERONE;5-ANDROSTENE-3BETA-OL-17-ONE;5-ANDROSTEIN-3B-OL-17-ONE;5-ANDROSTEN-3BETA-OL-17-ONE;DHEA;DEHYDROEPIANDOSTERONE;DEHYDROEPIANDROSTERONE   
CAS:   53-43-0
Molecular formula:C19H28O2   
Molecular weight: 288.42  
EINECS:   200-175-5

Appearance：White powder. 
Melting point: 149-151 °C(lit.)
Specific rotation:12 º (c=2, ethanol 96% 25 ºC) 
Boiling point:  370.65°C (rough estimate)
Density: 1.0484 (rough estimate) 
The refractive index: 1.4709 (estimate)
Storage conditions: Hormones
Acidity coefficient(pKa):  15.02±0.60(Predicted)
Solubility: 21.8mg/L(23.5 ºC)
Chemical properties: This is two crystal types. Acicular crystal, melting point 140 ~ 141℃; Microlobular crystal, melting point 152 ~ 153℃. It's dextrorotatory. Soluble in ethanol, ether, benzene, slightly soluble in chloroform, petroleum ether. Precipitate occurs when foxglove saponins are encountered.
Brief introduction:  (Dehydroepiandrosterone, DHEA for short), 3 -- β -hydroxyl androsterone -- 5 -- ene-17 -- ketone, also known as DEhydroepiandrosterone, is a kind of cholesterol △5, 6 double bond and esterification 3 -- β -hydroxyl steroid. Its molecular formula is C19H28O2, molecular weight is 288.41, Melting point of 151℃ ~ 153℃, rotation +5.5°, is the human adrenal cortex reticular layer secreted a precursor of adrenal hormone.