501688-42-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 501688-42-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,0,1,6,8 and 8 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 501688-42:
(8*5)+(7*0)+(6*1)+(5*6)+(4*8)+(3*8)+(2*4)+(1*2)=142
142 % 10 = 2
So 501688-42-2 is a valid CAS Registry Number.