12643-12-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 12643-12-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,2,6,4 and 3 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 12643-12:
(7*1)+(6*2)+(5*6)+(4*4)+(3*3)+(2*1)+(1*2)=78
78 % 10 = 8
So 12643-12-8 is a valid CAS Registry Number.