297178-81-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 297178-81-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,9,7,1,7 and 8 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 297178-81:
(8*2)+(7*9)+(6*7)+(5*1)+(4*7)+(3*8)+(2*8)+(1*1)=195
195 % 10 = 5
So 297178-81-5 is a valid CAS Registry Number.