19615-21-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 19615-21-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,6,1 and 5 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 19615-21:
(7*1)+(6*9)+(5*6)+(4*1)+(3*5)+(2*2)+(1*1)=115
115 % 10 = 5
So 19615-21-5 is a valid CAS Registry Number.