72631-94-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 72631-94-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,2,6,3 and 1 respectively; the second part has 2 digits, 9 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 72631-94:
(7*7)+(6*2)+(5*6)+(4*3)+(3*1)+(2*9)+(1*4)=128
128 % 10 = 8
So 72631-94-8 is a valid CAS Registry Number.