503604-07-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 503604-07-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,0,3,6,0 and 4 respectively; the second part has 2 digits, 0 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 503604-07:
(8*5)+(7*0)+(6*3)+(5*6)+(4*0)+(3*4)+(2*0)+(1*7)=107
107 % 10 = 7
So 503604-07-7 is a valid CAS Registry Number.