111958-81-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 111958-81-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,1,9,5 and 8 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 111958-81:
(8*1)+(7*1)+(6*1)+(5*9)+(4*5)+(3*8)+(2*8)+(1*1)=127
127 % 10 = 7
So 111958-81-7 is a valid CAS Registry Number.