42056-64-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 42056-64-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,0,5 and 6 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 42056-64:
(7*4)+(6*2)+(5*0)+(4*5)+(3*6)+(2*6)+(1*4)=94
94 % 10 = 4
So 42056-64-4 is a valid CAS Registry Number.