21233-15-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21233-15-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,2,3 and 3 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 21233-15:
(7*2)+(6*1)+(5*2)+(4*3)+(3*3)+(2*1)+(1*5)=58
58 % 10 = 8
So 21233-15-8 is a valid CAS Registry Number.