2-Pyrimidinylthioacethydrazides (V) with a 2, 3-xylidine or p-chlorobenzylamine residue at the 4-position of the pyrimidine ring and a chlorine atom at the 6-position have hypolipidemic activity [I]. To clarify the need for the chlorine atom and the 2, 3-xylidine or p- chlorobenzylamine residue for hypolipidemic activity to be present in the derivatives of (2- pyrimidinylthio) acetic acids, and to search for new hypolipidemic compounds in the ...