93990-67-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 93990-67-1 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, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 93990-67:
(7*9)+(6*3)+(5*9)+(4*9)+(3*0)+(2*6)+(1*7)=181
181 % 10 = 1
So 93990-67-1 is a valid CAS Registry Number.