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
4-Bromo-2-thiophene carboxaldehyde
18791-75-8
6
2-Thiophenecarboxylic acid
527-72-0
7
3-Thiophenecarboxylic acid
88-13-1
8
3-Methyl-2-thiophene carboxylic acid
23806-24-8
9
5-Methyl-2-thiophene carboxylic acid
1918-79-2
10
4-Bromo-2-thiophene carboxylic acid
16694-18-1
11
2-Thiopheneacetic acid
1918-77-0
12
2-Thiophenecarbonyl chloride
5271-67-0
13
3-Thiophenecarbonyl chloride
41507-35-1
14
2-Acetylthiophene
88-15-3
15
2-Thiophenecarboxylic hydrazide
2361-27-5
16
2-Thiophenecarbonitrile
1003-31-2
17
2-Thiophenemethanol
636-72-6
18
2-Methylthiophene
554-14-3

19
2-Ethylthiophene
872-55-91

20
2,5-Dimethylthiophene
638-02-8
21
2-Bromothiophene
1003-09-4
22
3-Bromothiophene
872-31-1
23
2-Bromo-3-methylthiophene
14282-76-9
24
4-Bromo-2-methylthiophene
29421-92-9
25
2-Bromo-5-methylthiophene
765-58-2
26
2-Chloro-3-methylthiophene
14345-97-2
27
2-Chloro-5-methylthiophene
17249-82-0
28
2-Chloro-5-nitropyridine
4548-45-2
29
2-Hydroxy-5-nitropyridine
5418-51-9
30
2-Methoxy-5-nitropyridine
5446-92-4
31
2-Amino-5-nitropyridine
4214-76-0
32
5-Amino-2-methoxypyridine
6628-77-9
33
2-Chloronicotinic acid
2942-59-8
34
2-Thiouracil
141-90-2
35
6-Methyl-2-thiouracil
56-04-2
36
2-chloro-3-chloromethylpyrimidine
109459-94-1
 
37
3,4-Dibromothiophene
3141-26-2
 
38
2,5-dibromothiophene
3141-27-3
 
39
6-chloronicotinic acid
5326-23-8
 
40
2-chloro-3-bromopicoline
40032-81-3
 
41
2-chlorothiophene
96-43-5
 
42
3-acetyl thiophene
1468-83-3