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(S)-2-methyl-4-heptynoic acid methyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

99783-74-1

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99783-74-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 99783-74-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,7,8 and 3 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 99783-74:
(7*9)+(6*9)+(5*7)+(4*8)+(3*3)+(2*7)+(1*4)=211
211 % 10 = 1
So 99783-74-1 is a valid CAS Registry Number.

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