497841-91-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 497841-91-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,9,7,8,4 and 1 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 497841-91:
(8*4)+(7*9)+(6*7)+(5*8)+(4*4)+(3*1)+(2*9)+(1*1)=215
215 % 10 = 5
So 497841-91-5 is a valid CAS Registry Number.