742091-30-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 742091-30-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,4,2,0,9 and 1 respectively; the second part has 2 digits, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 742091-30:
(8*7)+(7*4)+(6*2)+(5*0)+(4*9)+(3*1)+(2*3)+(1*0)=141
141 % 10 = 1
So 742091-30-1 is a valid CAS Registry Number.