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1-methyl-4-chloro-2-butenal is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

136571-61-4

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136571-61-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 136571-61-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,6,5,7 and 1 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 136571-61:
(8*1)+(7*3)+(6*6)+(5*5)+(4*7)+(3*1)+(2*6)+(1*1)=134
134 % 10 = 4
So 136571-61-4 is a valid CAS Registry Number.

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