501921-23-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 501921-23-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,0,1,9,2 and 1 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 501921-23:
(8*5)+(7*0)+(6*1)+(5*9)+(4*2)+(3*1)+(2*2)+(1*3)=109
109 % 10 = 9
So 501921-23-9 is a valid CAS Registry Number.