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ethyl (22E,24R)-27-nor-3α,5-cyclo-6β-methoxy-24-methyl-5α-cholest-22-en-26-oate is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

81520-57-2

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81520-57-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81520-57-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,5,2 and 0 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 81520-57:
(7*8)+(6*1)+(5*5)+(4*2)+(3*0)+(2*5)+(1*7)=112
112 % 10 = 2
So 81520-57-2 is a valid CAS Registry Number.

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