Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Free Radical Scavenging and Cytotoxic Activities of Substituted
  Pyrimidines   A library of substituted pyrimidines was synthesized and evaluated for free
radical scavenging, and in vitro cytotoxic activity in 3T3 cells. All compounds
showed good free radical scavenging activity with IC50 values in the range of
42.9 + 0.31 to 438.3 3.3 {\mu}M as compared to the standard butylated
hydroxytoluene having IC50 value of 128.83 2. 1 {\mu}M. The structure
activity-relationship was also established. Selected analogues 1, 2, 3, 5, 6,
7, 8, 9, 10, 12, 13, 15, 19, 20, 21, 24, 25, 26 and 28 were tested for
cytotoxicity in mouse fibroblast 3T3 cell line using MTT assay, and most of the
analogues showed cytotoxicity. This study has identified a number of cytotoxic
novel substituted pyrimidines having free radical scavenging activities that
can be used as inhibitory compounds for those cancer cells whose growth is
mediated by reactive oxygen species.

8
The categories of this paper are: hep-ex
7
The categories of this paper are: hep-th
24
The categories of this paper are: dg-ga
26
The categories of this paper are: bayes-an
11
The categories of this paper are: hep-lat
31
The categories of this paper are: ao-sci
18
The categories of this paper are: econ
30
The categories of this paper are: q-alg
17
The categories of this paper are: q-fin
28
The categories of this paper are: alg-geom
9
The categories of this paper are: nlin
33
The categories of this paper are: plasm-ph
19
The categories of this paper are: eess
2
The categories of this paper are: math
36
The categories of this paper are: cmp-lg
29
The categories of this paper are: funct-an