93990-71-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 93990-71-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,3,9,9 and 0 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 93990-71:
(7*9)+(6*3)+(5*9)+(4*9)+(3*0)+(2*7)+(1*1)=177
177 % 10 = 7
So 93990-71-7 is a valid CAS Registry Number.