197654-18-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 197654-18-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,7,6,5 and 4 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 197654-18:
(8*1)+(7*9)+(6*7)+(5*6)+(4*5)+(3*4)+(2*1)+(1*8)=185
185 % 10 = 5
So 197654-18-5 is a valid CAS Registry Number.