19100-97-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 19100-97-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,1,0 and 0 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 19100-97:
(7*1)+(6*9)+(5*1)+(4*0)+(3*0)+(2*9)+(1*7)=91
91 % 10 = 1
So 19100-97-1 is a valid CAS Registry Number.