172152-57-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 172152-57-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,2,1,5 and 2 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 172152-57:
(8*1)+(7*7)+(6*2)+(5*1)+(4*5)+(3*2)+(2*5)+(1*7)=117
117 % 10 = 7
So 172152-57-7 is a valid CAS Registry Number.