173788-87-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 173788-87-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,3,7,8 and 8 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 173788-87:
(8*1)+(7*7)+(6*3)+(5*7)+(4*8)+(3*8)+(2*8)+(1*7)=189
189 % 10 = 9
So 173788-87-9 is a valid CAS Registry Number.