19097-77-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 19097-77-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,0,9 and 7 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 19097-77:
(7*1)+(6*9)+(5*0)+(4*9)+(3*7)+(2*7)+(1*7)=139
139 % 10 = 9
So 19097-77-9 is a valid CAS Registry Number.