56637-43-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 56637-43-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,6,6,3 and 7 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 56637-43:
(7*5)+(6*6)+(5*6)+(4*3)+(3*7)+(2*4)+(1*3)=145
145 % 10 = 5
So 56637-43-5 is a valid CAS Registry Number.