339-37-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 339-37-7 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 3,3 and 9 respectively; the second part has 2 digits, 3 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 339-37:
(5*3)+(4*3)+(3*9)+(2*3)+(1*7)=67
67 % 10 = 7
So 339-37-7 is a valid CAS Registry Number.