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131-07-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 131-07-7 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 1,3 and 1 respectively; the second part has 2 digits, 0 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 131-07:
(5*1)+(4*3)+(3*1)+(2*0)+(1*7)=27
27 % 10 = 7
So 131-07-7 is a valid CAS Registry Number.
InChI:InChI=1/C21H20N2O3.C4H6O6/c1-12-16-10-23-8-7-14-13-5-3-4-6-18(13)22-20(14)19(23)9-15(16)17(11-26-12)21(24)25-2;5-1(3(7)8)2(6)4(9)10/h3-8,11-12,15-16H,9-10H2,1-2H3;1-2,5-6H,(H,7,8)(H,9,10)/t12-,15?,16?;/m0./s1

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