No.
Name
Molecular formula
Molecular structural
1

2-Thiophenecarboxaldehyde
98-03-3
2
3-Thiophenecarboxaldehyde
498-62-4
3
3-Methyl-2-thiophene carboxaldehyde
5834-16-2
4
5-Methyl-2-thiophene carboxaldehyde
13679-70-4
5
5-Ethyl-2-thiophene carboxaldehyde
36880-33-8
6
4-Bromo-2-thiophene carboxaldehyde
18791-75-8
7
2-Thiophenecarboxylic acid
527-72-0
8
3-Thiophenecarboxylic acid
88-13-1
9
3-Methyl-2-thiophene carboxylic acid
23806-24-8
10
5-Methyl-2-thiophene carboxylic acid
1918-79-2
11
4-Bromo-2-thiophene carboxylic acid
16694-18-1
12
2-Thiopheneacetic acid
1918-77-0
13
2-Thiophenecarbonyl chloride
5271-67-0
14
3-Thiophenecarbonyl chloride
41507-35-1
15
2-Thiopheneacetyl chloride
39098-97-0
16
2-Acetylthiophene
88-15-3
17
2-Acetyl-5-methylthiophene
13679-74-8

18
2-Thiophenecarboxylic hydrazide
2361-27-5
19
2-Thiophenecarbonitrile
1003-31-2
20
2-Thiophenemethanol
636-72-6
21
2-Methylthiophene
554-14-3

22
2-Ethylthiophene
872-55-91

23
2,5-Dimethylthiophene
638-02-8
24
5-Methyl-2-ethylthiophene
40323-88-4
25
2,5-Diethylthiophene
5069-23-8
26
2,3,5-Trimethylthiophene
1795-05-7
27
2-Bromothiophene
1003-09-4
28
3-Bromothiophene
872-31-1
29
3,4-Dibromothiophene
3141-26-2
30
2,5-Dibromothiophene
3141-27-3
31
2-Bromo-3-methylthiophene
14282-76-9
32
4-Bromo-2-methylthiophene
29421-92-9
33
2-Bromo-5-methylthiophene
765-58-2
34
2-Chloro-3-methylthiophene
14345-97-2
35
2,5-Dichloro-3-methylthiophene
17249-90-0
36
2-Chloro-5-methylthiophene
17249-82-0
37
2-Chloro-3-chloromethylthiophene
109459-94-1
38
2-Chloro-5-nitropyridine
4548-45-2
39
2-Hydroxy-5-nitropyridine
5418-51-9
40
2-Methoxy-5-nitropyridine
5446-92-4
41
2-Amino-5-nitropyridine
4214-76-0
42
5-Amino-2-methoxypyridine
6628-77-9
43
2-Chloronicotinic acid
2942-59-8
44
2-Thiouracil
141-90-2
45
6-Methyl-2-thiouracil
56-04-2
46
6-Chloronicotinic acid
5326-23-8