173203-63-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 173203-63-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,3,2,0 and 3 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 173203-63:
(8*1)+(7*7)+(6*3)+(5*2)+(4*0)+(3*3)+(2*6)+(1*3)=109
109 % 10 = 9
So 173203-63-9 is a valid CAS Registry Number.