1(4H)-Pyridineaceticacid, 3,5-dichloro-4-oxo- , with CAS number of 56187-37-2, can be called (3,5-Dichloro-4-oxopyridin-1(4H)-yl)acetic acid ; (3,5-Dichloro-4-oxo-1(4H)-pyridinyl)acetic acid . It is a white powder.