91807-42-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 91807-42-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,8,0 and 7 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 91807-42:
(7*9)+(6*1)+(5*8)+(4*0)+(3*7)+(2*4)+(1*2)=140
140 % 10 = 0
So 91807-42-0 is a valid CAS Registry Number.