33837-87-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 33837-87-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,3,8,3 and 7 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 33837-87:
(7*3)+(6*3)+(5*8)+(4*3)+(3*7)+(2*8)+(1*7)=135
135 % 10 = 5
So 33837-87-5 is a valid CAS Registry Number.