Chemical structures of β-aryl-β-mercapto ketone derivatives and IC₅₀ values against jack bean urease.

Compound no.	Chemical structures & IUPAC names	IC50 (μM)
17		28
18		12
19		6
20		102
21		56
22		63
23		18
24		127
25		16.6
26		35
27		25
28		85
29		83
30		151
31		97
32		16.3
33		14
34		167
35		125
36		71
37		135
38		181