501909-25-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 501909-25-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,0,1,9,0 and 9 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 501909-25:
(8*5)+(7*0)+(6*1)+(5*9)+(4*0)+(3*9)+(2*2)+(1*5)=127
127 % 10 = 7
So 501909-25-7 is a valid CAS Registry Number.