22931-37-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 22931-37-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,2,9,3 and 1 respectively; the second part has 2 digits, 3 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 22931-37:
(7*2)+(6*2)+(5*9)+(4*3)+(3*1)+(2*3)+(1*7)=99
99 % 10 = 9
So 22931-37-9 is a valid CAS Registry Number.