Table 3.

Antimicrobial zone of pyrazolone derivatives at the dosage of 100 ppm.

Com.	Antimicrobial zone (mm)
	Anti-bacterial activity							Anti-fungal activity
	B. subtilis	S. mutans	M. luteus	P. aeruginosa	S. typhi	S. paratyphi	E. coli	C. albicans	T. viride	A. niger
36	18.5	29.5	18.5	14.5	19.5	19.5	–	15.5	13.5	–
37	19.5	18	16.5	14.5	20.5	19.5	–	18.5	10.5	–
38	22.5	14.5	21.5	13.5	20	20	–	28.5	21.5	–
39	18.1	–	–	17.4	–	–	15.3	–	–	15.2
40	25.3	–	–	19.3	–	–	23.1	–	–	25.5