12137-42-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 12137-42-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,2,1,3 and 7 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 12137-42:
(7*1)+(6*2)+(5*1)+(4*3)+(3*7)+(2*4)+(1*2)=67
67 % 10 = 7
So 12137-42-7 is a valid CAS Registry Number.