21488-83-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21488-83-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,4,8 and 8 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 21488-83:
(7*2)+(6*1)+(5*4)+(4*8)+(3*8)+(2*8)+(1*3)=115
115 % 10 = 5
So 21488-83-5 is a valid CAS Registry Number.