509953-72-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 509953-72-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,0,9,9,5 and 3 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 509953-72:
(8*5)+(7*0)+(6*9)+(5*9)+(4*5)+(3*3)+(2*7)+(1*2)=184
184 % 10 = 4
So 509953-72-4 is a valid CAS Registry Number.