18712-33-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 18712-33-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,7,1 and 2 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 18712-33:
(7*1)+(6*8)+(5*7)+(4*1)+(3*2)+(2*3)+(1*3)=109
109 % 10 = 9
So 18712-33-9 is a valid CAS Registry Number.