33818-21-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 33818-21-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,3,8,1 and 8 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 33818-21:
(7*3)+(6*3)+(5*8)+(4*1)+(3*8)+(2*2)+(1*1)=112
112 % 10 = 2
So 33818-21-2 is a valid CAS Registry Number.