497165-18-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 497165-18-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,9,7,1,6 and 5 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 497165-18:
(8*4)+(7*9)+(6*7)+(5*1)+(4*6)+(3*5)+(2*1)+(1*8)=191
191 % 10 = 1
So 497165-18-1 is a valid CAS Registry Number.