57121-33-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 57121-33-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,1,2 and 1 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 57121-33:
(7*5)+(6*7)+(5*1)+(4*2)+(3*1)+(2*3)+(1*3)=102
102 % 10 = 2
So 57121-33-2 is a valid CAS Registry Number.