399-37-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 399-37-1 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 3,9 and 9 respectively; the second part has 2 digits, 3 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 399-37:
(5*3)+(4*9)+(3*9)+(2*3)+(1*7)=91
91 % 10 = 1
So 399-37-1 is a valid CAS Registry Number.