172987-98-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 172987-98-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,2,9,8 and 7 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 172987-98:
(8*1)+(7*7)+(6*2)+(5*9)+(4*8)+(3*7)+(2*9)+(1*8)=193
193 % 10 = 3
So 172987-98-3 is a valid CAS Registry Number.