74158-02-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 74158-02-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,1,5 and 8 respectively; the second part has 2 digits, 0 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 74158-02:
(7*7)+(6*4)+(5*1)+(4*5)+(3*8)+(2*0)+(1*2)=124
124 % 10 = 4
So 74158-02-4 is a valid CAS Registry Number.