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6,7-dimethyl-3-oxo-2,4-diphenyl-(1rH,5cH)-2,4-diaza-bicyclo[3.2.0]heptane-6c,7c-dicarboxylic acid anhydride is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

21401-04-7

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21401-04-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 21401-04-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,4,0 and 1 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 21401-04:
(7*2)+(6*1)+(5*4)+(4*0)+(3*1)+(2*0)+(1*4)=47
47 % 10 = 7
So 21401-04-7 is a valid CAS Registry Number.

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