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(+/-)-thiophosphoric acid O-methyl ester-O'-(4-nitro-phenyl ester); tetramethylammonium salt is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

12128-20-0

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12128-20-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 12128-20-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,2,1,2 and 8 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 12128-20:
(7*1)+(6*2)+(5*1)+(4*2)+(3*8)+(2*2)+(1*0)=60
60 % 10 = 0
So 12128-20-0 is a valid CAS Registry Number.

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