1235442-81-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1235442-81-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,3,5,4,4 and 2 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1235442-81:
(9*1)+(8*2)+(7*3)+(6*5)+(5*4)+(4*4)+(3*2)+(2*8)+(1*1)=135
135 % 10 = 5
So 1235442-81-5 is a valid CAS Registry Number.