128631-30-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 128631-30-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,6,3 and 1 respectively; the second part has 2 digits, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 128631-30:
(8*1)+(7*2)+(6*8)+(5*6)+(4*3)+(3*1)+(2*3)+(1*0)=121
121 % 10 = 1
So 128631-30-1 is a valid CAS Registry Number.