93991-94-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 93991-94-7 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 1 respectively; the second part has 2 digits, 9 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 93991-94:
(7*9)+(6*3)+(5*9)+(4*9)+(3*1)+(2*9)+(1*4)=187
187 % 10 = 7
So 93991-94-7 is a valid CAS Registry Number.