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223691-18-7

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223691-18-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 223691-18-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,3,6,9 and 1 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 223691-18:
(8*2)+(7*2)+(6*3)+(5*6)+(4*9)+(3*1)+(2*1)+(1*8)=127
127 % 10 = 7
So 223691-18-7 is a valid CAS Registry Number.

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