7548-94-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 7548-94-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,5,4 and 8 respectively; the second part has 2 digits, 9 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 7548-94:
(6*7)+(5*5)+(4*4)+(3*8)+(2*9)+(1*4)=129
129 % 10 = 9
So 7548-94-9 is a valid CAS Registry Number.
7548-94-9Relevant articles and documents
Preparation of 3β-hydroxy-27-norcholest-5-ene-25-one and intermediates thereof
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, (2008/06/13)
A process for preparing 3β-hydroxy-27-norcholest-5-ene-25-one, a useful intermediate in the synthesis of 25-acetoxy vitamin D3, novel intermediates, and preparation thereof are disclosed.