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rac-trans-(2E,4E)-3-(1,3-tetradecadiene-5,8-diynyl)oxiranebutanoic acid methyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

74448-21-8

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74448-21-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 74448-21-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,4,4 and 8 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 74448-21:
(7*7)+(6*4)+(5*4)+(4*4)+(3*8)+(2*2)+(1*1)=138
138 % 10 = 8
So 74448-21-8 is a valid CAS Registry Number.

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