191100-09-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 191100-09-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,1,1,0 and 0 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 191100-09:
(8*1)+(7*9)+(6*1)+(5*1)+(4*0)+(3*0)+(2*0)+(1*9)=91
91 % 10 = 1
So 191100-09-1 is a valid CAS Registry Number.