42563-74-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 42563-74-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,5,6 and 3 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 42563-74:
(7*4)+(6*2)+(5*5)+(4*6)+(3*3)+(2*7)+(1*4)=116
116 % 10 = 6
So 42563-74-6 is a valid CAS Registry Number.