97749-40-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 97749-40-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,7,7,4 and 9 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 97749-40:
(7*9)+(6*7)+(5*7)+(4*4)+(3*9)+(2*4)+(1*0)=191
191 % 10 = 1
So 97749-40-1 is a valid CAS Registry Number.