15997-64-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 15997-64-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,5,9,9 and 7 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 15997-64:
(7*1)+(6*5)+(5*9)+(4*9)+(3*7)+(2*6)+(1*4)=155
155 % 10 = 5
So 15997-64-5 is a valid CAS Registry Number.