99420-49-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 99420-49-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,4,2 and 0 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 99420-49:
(7*9)+(6*9)+(5*4)+(4*2)+(3*0)+(2*4)+(1*9)=162
162 % 10 = 2
So 99420-49-2 is a valid CAS Registry Number.