172146-75-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 172146-75-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,2,1,4 and 6 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 172146-75:
(8*1)+(7*7)+(6*2)+(5*1)+(4*4)+(3*6)+(2*7)+(1*5)=127
127 % 10 = 7
So 172146-75-7 is a valid CAS Registry Number.