33665-33-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 33665-33-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,3,6,6 and 5 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 33665-33:
(7*3)+(6*3)+(5*6)+(4*6)+(3*5)+(2*3)+(1*3)=117
117 % 10 = 7
So 33665-33-7 is a valid CAS Registry Number.