23959-97-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 23959-97-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,3,9,5 and 9 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 23959-97:
(7*2)+(6*3)+(5*9)+(4*5)+(3*9)+(2*9)+(1*7)=149
149 % 10 = 9
So 23959-97-9 is a valid CAS Registry Number.