643755-72-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 643755-72-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,4,3,7,5 and 5 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 643755-72:
(8*6)+(7*4)+(6*3)+(5*7)+(4*5)+(3*5)+(2*7)+(1*2)=180
180 % 10 = 0
So 643755-72-0 is a valid CAS Registry Number.