190910-31-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 190910-31-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,0,9,1 and 0 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 190910-31:
(8*1)+(7*9)+(6*0)+(5*9)+(4*1)+(3*0)+(2*3)+(1*1)=127
127 % 10 = 7
So 190910-31-7 is a valid CAS Registry Number.