71993-96-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 71993-96-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,9,9 and 3 respectively; the second part has 2 digits, 9 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 71993-96:
(7*7)+(6*1)+(5*9)+(4*9)+(3*3)+(2*9)+(1*6)=169
169 % 10 = 9
So 71993-96-9 is a valid CAS Registry Number.