7631-33-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 7631-33-6 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,6,3 and 1 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 7631-33:
(6*7)+(5*6)+(4*3)+(3*1)+(2*3)+(1*3)=96
96 % 10 = 6
So 7631-33-6 is a valid CAS Registry Number.