4949-97-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 4949-97-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,9,4 and 9 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 4949-97:
(6*4)+(5*9)+(4*4)+(3*9)+(2*9)+(1*7)=137
137 % 10 = 7
So 4949-97-7 is a valid CAS Registry Number.