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85390-93-8

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85390-93-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 85390-93-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,5,3,9 and 0 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 85390-93:
(7*8)+(6*5)+(5*3)+(4*9)+(3*0)+(2*9)+(1*3)=158
158 % 10 = 8
So 85390-93-8 is a valid CAS Registry Number.

85390-93-8Relevant articles and documents

3β,7β,15α-Trihydroxy-5-androsten-17-one, its 3,15-dipivalate, and their preparation

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, (2008/06/13)

A process for the preparation of 3β,7β,15α-trihydroxy-5-androsten-17-one and the 3,15-dipivalate thereof comprises epimerizing 3β,7α,15α-trihydroxy-5-androsten-17-one in the presence of a ketone with or without a solvent, with dilute mineral acid and subsequent treatment with an organic base, and optionally subsequently esterifying the 3β- and 15α-positions of the resultant 3β,7β,15α-triol with a reactive derivative of pivalic acid.

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