21000-82-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21000-82-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,0,0 and 0 respectively; the second part has 2 digits, 8 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 21000-82:
(7*2)+(6*1)+(5*0)+(4*0)+(3*0)+(2*8)+(1*2)=38
38 % 10 = 8
So 21000-82-8 is a valid CAS Registry Number.