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(3aR,7R,7aS)-2,2,7-Trimethyl-3-oxo-hexahydro-cyclobuta[1,2:1,4]dicyclopentene-3a,4-dicarboxylic acid 4-ethyl ester 3a-methyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

90171-32-7

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90171-32-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 90171-32-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,1,7 and 1 respectively; the second part has 2 digits, 3 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 90171-32:
(7*9)+(6*0)+(5*1)+(4*7)+(3*1)+(2*3)+(1*2)=107
107 % 10 = 7
So 90171-32-7 is a valid CAS Registry Number.

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