22137-47-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 22137-47-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,2,1,3 and 7 respectively; the second part has 2 digits, 4 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 22137-47:
(7*2)+(6*2)+(5*1)+(4*3)+(3*7)+(2*4)+(1*7)=79
79 % 10 = 9
So 22137-47-9 is a valid CAS Registry Number.