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2β-Brom-5α-methyl-cholestanon-(3) is a steroidal compound characterized by the presence of a bromine atom at the 2β position and a methyl group at the 5α position on the cholestane skeleton. This molecule belongs to the class of organic compounds known as steroids, which are derived from cholesterol and play a crucial role in various biological processes. The specific structure of 2β-Brom-5α-methyl-cholestanon-(3) may confer unique properties and potential applications in fields such as pharmaceuticals, where steroidal compounds are used for their hormone-like effects, or in chemical research for studying the structure-activity relationships of steroidal molecules.

3858-57-9

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3858-57-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 3858-57-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,8,5 and 8 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 3858-57:
(6*3)+(5*8)+(4*5)+(3*8)+(2*5)+(1*7)=119
119 % 10 = 9
So 3858-57-9 is a valid CAS Registry Number.

3858-57-9Downstream Products

3858-57-9Relevant academic research and scientific papers

STEREOCHIMIE-LVII ETUDE STEREOCHIMIQUE ET CINETIQUE DE LA BROMATION D'ESTERS ET D'ETHERS ENOLIQUES STEROIDIQUES

Calvet, Alain,Jozefowitz, Marcel,Levisalles, Jacques

, p. 103 - 115 (1983)

Absolute rates of bromination were measured for two series of derivatives of steroidal ketones 3, enol acetates 1 and enol methyl ether 2.Axial substituents exhibited a large effect on rates, which increased by 15,000 fold on going from (X=CH3; Y=CN) to (X=Y=H).From the bromide ion effect it was concluded that the first step (formation of an intermediate bromonium ion) was reversible and that the second step (formation of haloketones 4 or 5 or of haloacetals 8 or 9) was slow compared to the first step.The intermediate was concluded to be a highly unsymmetrical bromonium ion rather than a plain oxocarbenium ion.

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