503816-67-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 503816-67-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,0,3,8,1 and 6 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 503816-67:
(8*5)+(7*0)+(6*3)+(5*8)+(4*1)+(3*6)+(2*6)+(1*7)=139
139 % 10 = 9
So 503816-67-9 is a valid CAS Registry Number.