1107639-19-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1107639-19-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,0,7,6,3 and 9 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1107639-19:
(9*1)+(8*1)+(7*0)+(6*7)+(5*6)+(4*3)+(3*9)+(2*1)+(1*9)=139
139 % 10 = 9
So 1107639-19-9 is a valid CAS Registry Number.