177898-40-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 177898-40-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,7,8,9 and 8 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 177898-40:
(8*1)+(7*7)+(6*7)+(5*8)+(4*9)+(3*8)+(2*4)+(1*0)=207
207 % 10 = 7
So 177898-40-7 is a valid CAS Registry Number.