19722-73-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 19722-73-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,7,2 and 2 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 19722-73:
(7*1)+(6*9)+(5*7)+(4*2)+(3*2)+(2*7)+(1*3)=127
127 % 10 = 7
So 19722-73-7 is a valid CAS Registry Number.