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(+/-)-9-methoxy-8-(4-methoxy-phenyl)-(4ar)-1,2,3,4,4a,5,6,7-octahydro-1t,4t-etheno-naphthalene-2t,3t,5t,6t-tetracarboxylic acid-2,3;56-dianhydride is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

18813-83-7

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18813-83-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 18813-83-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,8,1 and 3 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 18813-83:
(7*1)+(6*8)+(5*8)+(4*1)+(3*3)+(2*8)+(1*3)=127
127 % 10 = 7
So 18813-83-7 is a valid CAS Registry Number.

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