ID: 801551

1-(2-chlorothiophen-3-yl)ethan-1-one			$$$$
M. F.	C6H5ClOS	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number A&J Pharmtech AJA-O17912 Database Data ID
M. W.	160.6213
CAS
Similarity	N/A

ID: 801552

(2-{[(tert-butoxy)carbonyl]amino}thiophen-3-yl)boronic acid			$$$$
M. F.	C9H14BNO4S	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number A&J Pharmtech AJA-O17913 Database Data ID
M. W.	243.08776
CAS
Similarity	N/A

ID: 801553

(5-{[(tert-butoxy)carbonyl]amino}thiophen-3-yl)boronic acid			$$$$
M. F.	C9H14BNO4S	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number A&J Pharmtech AJA-O17914 Database Data ID
M. W.	243.08776
CAS	889451-13-2
Similarity	N/A

ID: 801554

(4-chlorothiophen-3-yl)boronic acid			$$$$
M. F.	C4H4BClO2S	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number A&J Pharmtech AJA-O17915 Database Data ID
M. W.	162.40236
CAS
Similarity	N/A

ID: 801555

4-methyl-5-(trifluoromethyl)thiophene-2-carboxylic acid			$$$$
M. F.	C7H5F3O2S	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number A&J Pharmtech AJA-O17916 Database Data ID
M. W.	210.1736096
CAS
Similarity	N/A

ID: 801556

5-(chloromethyl)-3-methyl-2-(trifluoromethyl)thiophene			$$$$
M. F.	C7H6ClF3S	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number A&J Pharmtech AJA-O17917 Database Data ID
M. W.	214.6357496
CAS
Similarity	N/A

ID: 801557

5-(chloromethyl)-3-phenyl-2-(trifluoromethyl)thiophene			$$$$
M. F.	C12H8ClF3S	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number A&J Pharmtech AJA-O17918 Database Data ID
M. W.	276.7051296
CAS
Similarity	N/A

ID: 801558

5-(chloromethyl)-3-cyclopropyl-2-(trifluoromethyl)thiophene			$$$$
M. F.	C9H8ClF3S	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number A&J Pharmtech AJA-O17919 Database Data ID
M. W.	240.6730296
CAS
Similarity	N/A

ID: 801559

[4-cyclopropyl-5-(trifluoromethyl)thiophen-2-yl]methanamine			$$$$
M. F.	C9H10F3NS	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number A&J Pharmtech AJA-O17920 Database Data ID
M. W.	221.2426096
CAS
Similarity	N/A

ID: 801560

[4-methyl-5-(trifluoromethyl)thiophen-2-yl]methanamine			$$$$
M. F.	C7H8F3NS	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number A&J Pharmtech AJA-O17921 Database Data ID
M. W.	195.2053296
CAS
Similarity	N/A

ID: 801561

5-(trifluoromethyl)thiophene-2-carboximidamide			$$$$
M. F.	C6H5F3N2S	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number A&J Pharmtech AJA-O17922 Database Data ID
M. W.	194.1775096
CAS
Similarity	N/A

ID: 801562

2-[5-(trifluoromethyl)thiophen-2-yl]acetic acid			$$$$
M. F.	C7H5F3O2S	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number A&J Pharmtech AJA-O17923 Database Data ID
M. W.	210.1736096
CAS
Similarity	N/A

ID: 801563

2-[5-(trifluoromethyl)thiophen-2-yl]ethan-1-amine			$$$$
M. F.	C7H8F3NS	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number A&J Pharmtech AJA-O17924 Database Data ID
M. W.	195.2053296
CAS
Similarity	N/A

ID: 801564

2-(2-chloroethyl)-5-(trifluoromethyl)thiophene			$$$$
M. F.	C7H6ClF3S	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number A&J Pharmtech AJA-O17925 Database Data ID
M. W.	214.6357496
CAS
Similarity	N/A

ID: 801565

5-(trifluoromethyl)thiophene-2-carbonitrile			$$$$
M. F.	C6H2F3NS	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number A&J Pharmtech AJA-O17926 Database Data ID
M. W.	177.1469896
CAS
Similarity	N/A

ID: 801566

[5-(trifluoromethyl)thiophen-2-yl]methanol			$$$$
M. F.	C6H5F3OS	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number A&J Pharmtech AJA-O17927 Database Data ID
M. W.	182.1635096
CAS
Similarity	N/A

ID: 801567

5-(trifluoromethyl)thiophene-2-carbaldehyde			$$$$
M. F.	C6H3F3OS	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number A&J Pharmtech AJA-O17928 Database Data ID
M. W.	180.1476296
CAS
Similarity	N/A

ID: 801568

4-methyl-5-(trifluoromethyl)thiophene-2-carbaldehyde			$$$$
M. F.	C7H5F3OS	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number A&J Pharmtech AJA-O17929 Database Data ID
M. W.	194.1742096
CAS
Similarity	N/A

ID: 801569

4-cyclopropyl-5-(trifluoromethyl)thiophene-2-carbaldehyde			$$$$
M. F.	C9H7F3OS	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number A&J Pharmtech AJA-O17930 Database Data ID
M. W.	220.2114896
CAS
Similarity	N/A

ID: 801570

4-tert-butyl-5-(trifluoromethyl)thiophene-2-carbaldehyde			$$$$
M. F.	C10H11F3OS	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number A&J Pharmtech AJA-O17931 Database Data ID
M. W.	236.2539496
CAS
Similarity	N/A

ID: 801571

5-(trifluoromethyl)thiophene-3-carboxylic acid			$$$$
M. F.	C6H3F3O2S	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number A&J Pharmtech AJA-O17932 Database Data ID
M. W.	196.1470296
CAS	1260671-29-1
Similarity	N/A

ID: 801572

5-(trifluoromethyl)thiophene-3-carbaldehyde			$$$$
M. F.	C6H3F3OS	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number A&J Pharmtech AJA-O17933 Database Data ID
M. W.	180.1476296
CAS
Similarity	N/A

ID: 801573

2-amino-5-(trifluoromethyl)thiophene-3-carboxylic acid			$$$$
M. F.	C6H4F3NO2S	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number A&J Pharmtech AJA-O17934 Database Data ID
M. W.	211.1616696
CAS
Similarity	N/A

ID: 801574

2-{[(tert-butoxy)carbonyl]amino}-5-(trifluoromethyl)thiophene-3-carboxylic acid			$$$$
M. F.	C11H12F3NO4S	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number A&J Pharmtech AJA-O17935 Database Data ID
M. W.	311.2774896
CAS
Similarity	N/A

ID: 801575

tert-butyl N-[3-formyl-5-(trifluoromethyl)thiophen-2-yl]carbamate			$$$$
M. F.	C11H12F3NO3S	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number A&J Pharmtech AJA-O17936 Database Data ID
M. W.	295.2780896
CAS
Similarity	N/A

ID: 801576

2-chloro-5-(trifluoromethyl)thiophene-3-carbaldehyde			$$$$
M. F.	C6H2ClF3OS	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number A&J Pharmtech AJA-O17937 Database Data ID
M. W.	214.5926896
CAS
Similarity	N/A

ID: 801577

[2-chloro-5-(trifluoromethyl)thiophen-3-yl]boronic acid			$$$$
M. F.	C5H3BClF3O2S	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number A&J Pharmtech AJA-O17938 Database Data ID
M. W.	230.4003296
CAS
Similarity	N/A

ID: 801578

[5-(trifluoromethyl)thiophen-3-yl]boronic acid			$$$$
M. F.	C5H4BF3O2S	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number A&J Pharmtech AJA-O17939 Database Data ID
M. W.	195.9552696
CAS
Similarity	N/A

ID: 801579

(5-methylthiophen-3-yl)boronic acid			$$$$
M. F.	C5H7BO2S	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number A&J Pharmtech AJA-O17940 Database Data ID
M. W.	141.98388
CAS	930303-82-5
Similarity	N/A

ID: 801580

[5-(propan-2-yl)thiophen-3-yl]boronic acid			$$$$
M. F.	C7H11BO2S	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number A&J Pharmtech AJA-O17941 Database Data ID
M. W.	170.03704
CAS
Similarity	N/A

ID: 801581

(5-tert-butylthiophen-3-yl)boronic acid			$$$$
M. F.	C8H13BO2S	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number A&J Pharmtech AJA-O17942 Database Data ID
M. W.	184.06362
CAS
Similarity	N/A

ID: 801582

5-tert-butylthiophen-2-amine			$$$$
M. F.	C8H13NS	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number A&J Pharmtech AJA-O17943 Database Data ID
M. W.	155.26052
CAS
Similarity	N/A

ID: 801583

5-(chloromethyl)thiophene-3-carbonitrile			$$$$
M. F.	C6H4ClNS	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number A&J Pharmtech AJA-O17944 Database Data ID
M. W.	157.62066
CAS
Similarity	N/A

ID: 801584

2-(chloromethyl)-4-methylthiophene			$$$$
M. F.	C6H7ClS	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number A&J Pharmtech AJA-O17945 Database Data ID
M. W.	146.63778
CAS
Similarity	N/A

ID: 801585

5-(chloromethyl)thiophene-2-carbonitrile			$$$$
M. F.	C6H4ClNS	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number A&J Pharmtech AJA-O17946 Database Data ID
M. W.	157.62066
CAS	1260667-25-1
Similarity	N/A

ID: 801586

2-(chloromethyl)-5-phenylthiophene			$$$$
M. F.	C11H9ClS	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number A&J Pharmtech AJA-O17947 Database Data ID
M. W.	208.70716
CAS
Similarity	N/A

ID: 801587

(4,5-dimethylthiophen-2-yl)methanamine			$$$$
M. F.	C7H11NS	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number A&J Pharmtech AJA-O17948 Database Data ID
M. W.	141.23394
CAS
Similarity	N/A

ID: 801588

methyl 5-(aminomethyl)thiophene-3-carboxylate			$$$$
M. F.	C7H9NO2S	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number A&J Pharmtech AJA-O17949 Database Data ID
M. W.	171.21686
CAS
Similarity	N/A

ID: 801589

4-bromo-2-(chloromethyl)-1-benzothiophene			$$$$
M. F.	C9H6BrClS	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number A&J Pharmtech AJA-O17950 Database Data ID
M. W.	261.56594
CAS
Similarity	N/A

ID: 801590

5-(chloromethyl)-2-methylthiophene-3-carbonitrile			$$$$
M. F.	C7H6ClNS	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number A&J Pharmtech AJA-O17951 Database Data ID
M. W.	171.64724
CAS
Similarity	N/A

ID: 801591

1-[2-hydroxy-5-(trifluoromethyl)pyridin-3-yl]ethan-1-one			$$$$
M. F.	C8H6F3NO2	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number A&J Pharmtech AJA-O17952 Database Data ID
M. W.	205.1339496
CAS
Similarity	N/A

ID: 801592

1-[2-fluoro-5-(trifluoromethyl)pyridin-3-yl]ethan-1-one			$$$$
M. F.	C8H5F4NO	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number A&J Pharmtech AJA-O17953 Database Data ID
M. W.	207.1250128
CAS
Similarity	N/A

ID: 801593

1-(2-fluoro-5-methoxypyridin-3-yl)ethan-1-one			$$$$
M. F.	C8H8FNO2	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number A&J Pharmtech AJA-O17954 Database Data ID
M. W.	169.1530232
CAS
Similarity	N/A

ID: 801594

1-(6-chloro-2-fluoropyridin-3-yl)ethan-1-one			$$$$
M. F.	C7H5ClFNO	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number A&J Pharmtech AJA-O17955 Database Data ID
M. W.	173.5721032
CAS
Similarity	N/A

ID: 801595

1-(6-bromo-2-fluoropyridin-3-yl)ethan-1-one			$$$$
M. F.	C7H5BrFNO	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number A&J Pharmtech AJA-O17956 Database Data ID
M. W.	218.0231032
CAS
Similarity	N/A

ID: 801596

1-(2-fluoro-6-methoxypyridin-3-yl)ethan-1-one			$$$$
M. F.	C8H8FNO2	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number A&J Pharmtech AJA-O17957 Database Data ID
M. W.	169.1530232
CAS
Similarity	N/A

ID: 801597

1-(6-chloro-2-hydroxypyridin-3-yl)ethan-1-one			$$$$
M. F.	C7H6ClNO2	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number A&J Pharmtech AJA-O17958 Database Data ID
M. W.	171.58104
CAS
Similarity	N/A

ID: 801598

1-(5-chloro-2-hydroxypyridin-3-yl)ethan-1-one			$$$$
M. F.	C7H6ClNO2	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number A&J Pharmtech AJA-O17959 Database Data ID
M. W.	171.58104
CAS	1260663-14-6
Similarity	N/A

ID: 801599

1-[4-chloro-6-(trifluoromethyl)pyridin-3-yl]ethan-1-one			$$$$
M. F.	C8H5ClF3NO	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number A&J Pharmtech AJA-O17960 Database Data ID
M. W.	223.5796096
CAS
Similarity	N/A

ID: 801600

1-[4-hydroxy-6-(trifluoromethyl)pyridin-3-yl]ethan-1-one			$$$$
M. F.	C8H6F3NO2	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number A&J Pharmtech AJA-O17961 Database Data ID
M. W.	205.1339496
CAS
Similarity	N/A

• ID:801551

  

  1-(2-chlorothiophen-3-yl)ethan-1-one

• ID:801552

  

  (2-{[(tert-butoxy)carbonyl]amino}thiophen-3-yl)boronic acid

• ID:801553

  

  (5-{[(tert-butoxy)carbonyl]amino}thiophen-3-yl)boronic acid

• ID:801554

  

  (4-chlorothiophen-3-yl)boronic acid

• ID:801555

  

  4-methyl-5-(trifluoromethyl)thiophene-2-carboxylic acid

• ID:801556

  

  5-(chloromethyl)-3-methyl-2-(trifluoromethyl)thiophene

• ID:801557

  

  5-(chloromethyl)-3-phenyl-2-(trifluoromethyl)thiophene

• ID:801558

  

  5-(chloromethyl)-3-cyclopropyl-2-(trifluoromethyl)thiophene

• ID:801559

  

  [4-cyclopropyl-5-(trifluoromethyl)thiophen-2-yl]methanamine

• ID:801560

  

  [4-methyl-5-(trifluoromethyl)thiophen-2-yl]methanamine

• ID:801561

  

  5-(trifluoromethyl)thiophene-2-carboximidamide

• ID:801562

  

  2-[5-(trifluoromethyl)thiophen-2-yl]acetic acid

• ID:801563

  

  2-[5-(trifluoromethyl)thiophen-2-yl]ethan-1-amine

• ID:801564

  

  2-(2-chloroethyl)-5-(trifluoromethyl)thiophene

• ID:801565

  

  5-(trifluoromethyl)thiophene-2-carbonitrile

• ID:801566

  

  [5-(trifluoromethyl)thiophen-2-yl]methanol

• ID:801567

  

  5-(trifluoromethyl)thiophene-2-carbaldehyde

• ID:801568

  

  4-methyl-5-(trifluoromethyl)thiophene-2-carbaldehyde

• ID:801569

  

  4-cyclopropyl-5-(trifluoromethyl)thiophene-2-carbaldehyde

• ID:801570

  

  4-tert-butyl-5-(trifluoromethyl)thiophene-2-carbaldehyde

• ID:801571

  

  5-(trifluoromethyl)thiophene-3-carboxylic acid

• ID:801572

  

  5-(trifluoromethyl)thiophene-3-carbaldehyde

• ID:801573

  

  2-amino-5-(trifluoromethyl)thiophene-3-carboxylic acid

• ID:801574

  

  2-{[(tert-butoxy)carbonyl]amino}-5-(trifluoromethyl)thiophene-3-carboxylic acid

• ID:801575

  

  tert-butyl N-[3-formyl-5-(trifluoromethyl)thiophen-2-yl]carbamate

• ID:801576

  

  2-chloro-5-(trifluoromethyl)thiophene-3-carbaldehyde

• ID:801577

  

  [2-chloro-5-(trifluoromethyl)thiophen-3-yl]boronic acid

• ID:801578

  

  [5-(trifluoromethyl)thiophen-3-yl]boronic acid

• ID:801579

  

  (5-methylthiophen-3-yl)boronic acid

• ID:801580

  

  [5-(propan-2-yl)thiophen-3-yl]boronic acid

• ID:801581

  

  (5-tert-butylthiophen-3-yl)boronic acid

• ID:801582

  

  5-tert-butylthiophen-2-amine

• ID:801583

  

  5-(chloromethyl)thiophene-3-carbonitrile

• ID:801584

  

  2-(chloromethyl)-4-methylthiophene

• ID:801585

  

  5-(chloromethyl)thiophene-2-carbonitrile

• ID:801586

  

  2-(chloromethyl)-5-phenylthiophene

• ID:801587

  

  (4,5-dimethylthiophen-2-yl)methanamine

• ID:801588

  

  methyl 5-(aminomethyl)thiophene-3-carboxylate

• ID:801589

  

  4-bromo-2-(chloromethyl)-1-benzothiophene

• ID:801590

  

  5-(chloromethyl)-2-methylthiophene-3-carbonitrile

• ID:801591

  

  1-[2-hydroxy-5-(trifluoromethyl)pyridin-3-yl]ethan-1-one

• ID:801592

  

  1-[2-fluoro-5-(trifluoromethyl)pyridin-3-yl]ethan-1-one

• ID:801593

  

  1-(2-fluoro-5-methoxypyridin-3-yl)ethan-1-one

• ID:801594

  

  1-(6-chloro-2-fluoropyridin-3-yl)ethan-1-one

• ID:801595

  

  1-(6-bromo-2-fluoropyridin-3-yl)ethan-1-one

• ID:801596

  

  1-(2-fluoro-6-methoxypyridin-3-yl)ethan-1-one

• ID:801597

  

  1-(6-chloro-2-hydroxypyridin-3-yl)ethan-1-one

• ID:801598

  

  1-(5-chloro-2-hydroxypyridin-3-yl)ethan-1-one

• ID:801599

  

  1-[4-chloro-6-(trifluoromethyl)pyridin-3-yl]ethan-1-one

• ID:801600

  

  1-[4-hydroxy-6-(trifluoromethyl)pyridin-3-yl]ethan-1-one