1234458-55-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1234458-55-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,3,4,4,5 and 8 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1234458-55:
(9*1)+(8*2)+(7*3)+(6*4)+(5*4)+(4*5)+(3*8)+(2*5)+(1*5)=149
149 % 10 = 9
So 1234458-55-9 is a valid CAS Registry Number.