1273189-65-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1273189-65-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,7,3,1,8 and 9 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1273189-65:
(9*1)+(8*2)+(7*7)+(6*3)+(5*1)+(4*8)+(3*9)+(2*6)+(1*5)=173
173 % 10 = 3
So 1273189-65-3 is a valid CAS Registry Number.