1273553-81-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1273553-81-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,7,3,5,5 and 3 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1273553-81:
(9*1)+(8*2)+(7*7)+(6*3)+(5*5)+(4*5)+(3*3)+(2*8)+(1*1)=163
163 % 10 = 3
So 1273553-81-3 is a valid CAS Registry Number.