3993-51-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 3993-51-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,9,9 and 3 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 3993-51:
(6*3)+(5*9)+(4*9)+(3*3)+(2*5)+(1*1)=119
119 % 10 = 9
So 3993-51-9 is a valid CAS Registry Number.