177957-18-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 177957-18-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,7,9,5 and 7 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 177957-18:
(8*1)+(7*7)+(6*7)+(5*9)+(4*5)+(3*7)+(2*1)+(1*8)=195
195 % 10 = 5
So 177957-18-5 is a valid CAS Registry Number.