17620-94-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 17620-94-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,7,6,2 and 0 respectively; the second part has 2 digits, 9 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 17620-94:
(7*1)+(6*7)+(5*6)+(4*2)+(3*0)+(2*9)+(1*4)=109
109 % 10 = 9
So 17620-94-9 is a valid CAS Registry Number.