Heterocyclic Building Blocks

Alfa Aesar™ 5-Nitro-2-furoic acid, 98+%

Chemical Name or Material: 5-Nitro-2-furoic acid CAS: 645-12-5 Molecular Formula: C5H3NO5 Formula Weight: 157.08 MDL Number: MFCD00003240 Beilstein: 139373 Synonym: 5-Nitrofuran-2-carboxylic acid 5-NITRO-2-FUROIC ACID, 98+%,5G

2,3-Difluoro-4-(trifluoromethyl)pyridine, 97%, ACROS Organics™

Chemical Name or Material: 2, 3-Difluoro-4-(trifluoromethyl)pyridine Assay Percent Range: 97% Molecular Formula: C6H2F5N Formula Weight: 183.08 1GR 2,3-Difluoro-4-(trifluoromethyl)pyridine, 97%

Alfa Aesar™ 3-Bromoimidazo[1,2-a]pyridine-6-carboxylic acid hydrate, 95%

Chemical Name or Material: 3-Bromoimidazo[1,2-a]pyridine-6-carboxylic acid hydrate CAS: 886362-00-1 Molecular Formula: C8H5BrN2O2·xH2O Formula Weight: 241.05 (Anhydrous) MDL Number: MFCD22989347 250MG 3-Bromoimidazo[1,2-a]pyridine-6-carboxylic acid hydrate, 95% 250mg

Alfa Aesar™ Ethyl oxazole-5-carboxylate, 98%

Chemical Name or Material: Ethyl oxazole-5-carboxylate CAS: 118994-89-1 Molecular Formula: C6H7NO3 Formula Weight: 141.13 MDL Number: MFCD04114930 Beilstein: 83084416 Synonym: Oxazole-5-carboxylic acid ethyl ester 25GR Ethyl oxazole-5-carboxylate, 98% 25g

Alfa Aesar™ 2-Chloro-5-(4-methyl-1-piperidinylcarbonyl)benzeneboronic acid, 97%

Chemical Name or Material: 2-Chloro-5-(4-methyl-1-piperidinylcarbonyl)benzeneboronic acid Molecular Formula: C13H17BClNO3 Formula Weight: 281.54 MDL Number: MFCD22125153 Synonym: 2-Chloro-5-(4-methyl-1-piperidinylcarbonyl)phenylboronic acid 1GR 2-Chloro-5-(4-methyl-1-piperidinylcarbonyl)benzeneboronic acid, 97% 1g

Alfa Aesar™ 5-(Trifluoromethyl)pyridine-2-carboxaldehyde, 95%

Chemical Name or Material: 5-(Trifluoromethyl)pyridine-2-carboxaldehyde CAS: 31224-82-5 Molecular Formula: C7H4F3NO Formula Weight: 175.11 MDL Number: MFCD07375388 Synonym: 5-(Trifluoromethyl)picolinaldehyde 250MG 5-(Trifluoromethyl)pyridine-2-carboxaldehyde, 95% 250mg

Alfa Aesar™ 2-Fluoro-4-(4-morpholinylcarbonyl)benzeneboronic acid, 97%

Chemical Name or Material: 2-Fluoro-4-(4-morpholinylcarbonyl)benzeneboronic acid CAS: 1092500-69-0 Molecular Formula: C11H13BFNO4 Formula Weight: 253.04 MDL Number: MFCD22682832 250MG 2-Fluoro-4-(4-morpholinylcarbonyl)benzeneboronic acid, 97% 250mg

Alfa Aesar™ 8-Hydroxyjulolidine, 97%

Chemical Name or Material: 8-Hydroxyjulolidine CAS: 41175-50-2 Molecular Formula: C12H15NO Formula Weight: 189.26 MDL Number: MFCD00006918 Beilstein: 1530423 Synonym: 2,3,6,7-Tetrahydro-1H,5H-benzo[ij]quinolizin-8-ol 8-HYDROXYJULOLIDINE, 97% 1G

Alfa Aesar™ 2-Ethoxypyridine-3-boronic acid pinacol ester, 95%

Chemical Name or Material: 2-Ethoxypyridine-3-boronic acid pinacol ester CAS: 848243-23-2 Molecular Formula: C13H20BNO3 Formula Weight: 249.12 MDL Number: MFCD07366721 Synonym: 2-Ethoxy-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine 2-ETHOXY-3-(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABORO- 5

Alfa Aesar™ 5-Fluoro-2-methoxynicotinic acid, 97%

Chemical Name or Material: 5-Fluoro-2-methoxynicotinic acid CAS: 884494-82-0 Formula Weight: 171.13 MDL Number: MFCD04972399 Beilstein: 22044595 Synonym: 5-Fluoro-2-methoxypyridine-3-carboxylic acid 1GR 5-Fluoro-2-methoxynicotinic acid, 97% 1g

Alfa Aesar™ Hexamethylcyclotrisiloxane, 97%

Chemical Name or Material: Hexamethylcyclotrisiloxane CAS: 541-05-9 Molecular Formula: C6H18O3Si3 Formula Weight: 222.47 MDL Number: MFCD00005943 UN Number: UN1325 Beilstein: 1766829 HEXAMETHYLCYCLOTRISILOXANE98%,25G

Alfa Aesar™ 4-Acetyl-5-methyl-1-phenyl-1H-pyrazole, 97%

Chemical Name or Material: 4-Acetyl-5-methyl-1-phenyl-1H-pyrazole CAS: 6123-63-3 Molecular Formula: C12H12N2O Formula Weight: 200.24 MDL Number: MFCD00020733 4-ACETYL-5-METHYL-1-PHENYLPYRAZOLE, 97%,25G

Alfa Aesar™ 2-(2-Thienyl)thioacetamide, 97%

Chemical Name or Material: 2-(2-Thienyl)thioacetamide Molecular Formula: C6H7NS2 Formula Weight: 157.25 MDL Number: MFCD08142190 2GR 2-(2-Thienyl)thioacetamide, 97% 2g

Pyrazinecarbonitrile, 99%, ACROS Organics™

Chemical Name or Material: Pyrazinecarbonitrile Assay: ≥98.5% Assay Percent Range: 99% Molecular Formula: C5H3N3 Formula Weight: 105.1 50GR Pyrazinecarbonitrile, 99%

6-Nitrobenzoxazole-2(3H)-one, 97%, ACROS Organics™

Chemical Name or Material: 6-Nitrobenzoxazole-2(3H)-one CAS: 4694-91-1 CAS Min %: 96.0 CAS Max %: 100.0 Assay: ≥96.0% (HPLC) Assay Percent Range: 97% Molecular Formula: C7H4N2O4 Formula Weight: 180.12 MDL Number: MFCD00463755 1GR 6-Nitrobenzoxazole-2(3H)-one, 97%

Alfa Aesar™ 16-Hexadecanolide, 97%

Chemical Name or Material: 16-Hexadecanolide CAS: 109-29-5 Molecular Formula: C16H30O2 Formula Weight: 254.42 MDL Number: MFCD00039668 Beilstein: 148631 Synonym: omega-Hexadecalactone; 16-Hydroxyhexadecanoic acid lactone 16-HEXADECANOLIDE, 97% 10G

L-β-Homoproline hydrochloride, 98% , ACROS Organics™

Chemical Name or Material: L-β-Homoproline hydrochloride CAS: 53912-85-9 Assay: ≥97.5% Assay Percent Range: 98% Molecular Formula: C6H11NO2·ClH Formula Weight: 165.62 MDL Number: MFCD07363484 Synonym: (S)-2-(2-Pyrrolidinyl)acetic acid hydrochloride 250MG L-beta-Homoproline hydrochloride, 98%

Alfa Aesar™ 6-Hydroxy-5-nitronicotinic acid, 96%

Chemical Name or Material: 6-Hydroxy-5-nitronicotinic acid CAS: 6635-31-0 Molecular Formula: C6H4N2O5 Formula Weight: 184.11 MDL Number: MFCD02180840 Beilstein: 177986 Synonym: 2-Hydroxy-3-nitropyridine-5-carboxylic acid 1GR 6-Hydroxy-5-nitronicotinic acid, 96% 1g

Isocarbostyril, 98%, ACROS Organics™

Chemical Name or Material: Isocarbostyril Assay: ≥97.5% Assay Percent Range: 98% Molecular Formula: C9H7NO Formula Weight: 145.16 Synonym: 1-Hydroxyisoquinoline 1GR Isocarbostyril, 98%

Alfa Aesar™ 1-[4-(Trifluoromethyl)phenyl]pyrrole, 98%

Chemical Name or Material: 1-[4-(Trifluoromethyl)phenyl]pyrrole CAS: 92636-38-9 Molecular Formula: C11H8F3N Formula Weight: 211.19 MDL Number: MFCD01567129 1GR 1-¢4-(Trifluoromethyl)phenyl!pyrrole, 98% 1g

Alfa Aesar™ 5-Cyano-2-fluoropyridine, 95%

Chemical Name or Material: 5-Cyano-2-fluoropyridine CAS: 3939-12-6 Formula Weight: 122.1 MDL Number: MFCD09261087 UN Number: UN3439 Beilstein: 471855 Synonym: 2-Fluoropyridine-5-carbonitrile 1GR 5-Cyano-2-fluoropyridine, 95% 1g

Alfa Aesar™ 4-Amino-3-(trifluoromethyl)pyridine, 97%

Chemical Name or Material: 4-Amino-3-(trifluoromethyl)pyridine CAS: 387824-61-5 Molecular Formula: C6H5F3N2 Formula Weight: 162.11 MDL Number: MFCD02183554 UN Number: UN2811 Synonym: 3-Trifluoromethyl-4-pyridinamine 4-AMINO-3-(TRIFLUOROMETHYL)PYRIDINE,500MG

Alfa Aesar™ 5-Benzyloxyindole, 94%, may contain up to ca 7% toluene

Chemical Name or Material: 5-Benzyloxyindole CAS: 1215-59-4 Molecular Formula: C15H13NO Formula Weight: 223.28 MDL Number: MFCD00005676 Beilstein: 173532 5-BENZYLOXYINDOLE, 95% 25G

(S)-(+)-1-Methyl-3-pyrrolidinol, 98%, ee 99%, ACROS Organics™

Chemical Name or Material: (S)-(+)-1-Methyl-3-pyrrolidinol Name Note: ee 99% CAS: 104641-59-0 CAS Min %: 97.5 CAS Max %: 100.0 Assay: ≥97.5% Assay Percent Range: 98% Molecular Formula: C5H11NO Formula Weight: 101.15 Synonym: (S)-(+)-3-Hydroxy-N-methylpyrrolidine 1GR (S)-(+)-1-Methyl-3-pyrrolidinol, 98%, ee 99%

Alfa Aesar™ 2-(4-Methoxyphenyl)thiazole-4-carboxylic acid, 97%

Chemical Name or Material: 2-(4-Methoxyphenyl)thiazole-4-carboxylic acid CAS: 57677-80-2 Molecular Formula: C11H9NO3S Formula Weight: 235.26 MDL Number: MFCD03791177 5GR 2-(4-Methoxyphenyl)thiazole-4-carboxylic acid, 97% 5g

Alfa Aesar™ Methyl (S)-(+)-2-oxopyrrolidine-5-carboxylate, 97%

Chemical Name or Material: Methyl (S)-(+)-2-oxopyrrolidine-5-carboxylate CAS: 4931-66-2 Formula Weight: 143.14 MDL Number: MFCD00080931 Synonym: Pyr-OMe; L-Pyroglutamic acid methyl ester 5GR Methyl (S)-(+)-2-oxopyrrolidine-5-carboxylate, 97% 5g

3-Iodo-1H-pyrazole, 97%, Acros Organics

Chemical Name or Material: 3-Iodo-1H-pyrazole Assay Percent Range: 97% Molecular Formula: C3H3IN2 Formula Weight: 193.98 5GR 3-Iodo-1H-pyrazole, 97%

Alfa Aesar™ 2-(4-Isopropylphenyl)-5-nitrobenzimidazole, 95%

Chemical Name or Material: 2-(4-Isopropylphenyl)-5-nitrobenzimidazole Formula Weight: 281.32 MDL Number: MFCD17779818 1GR 2-(4-Isopropylphenyl)-5-nitrobenzimidazole, 95% 1g

2-Methyl-2H-indazole-4-boronic acid pinacol ester, 97%, ACROS Organics™

Chemical Name or Material: 2-Methyl-2H-indazole-4-boronic acid pinacol ester Assay Percent Range: 97% Molecular Formula: C14H19BN2O2 Formula Weight: 258.13 1GR 2-Methyl-2H-indazole-4-boronic acid pinacol ester, 97%

1,4-Benzodioxan-6-yl methyleketone, 98%, ACROS Organics™

Chemical Name or Material: 1, 4-Benzodioxan-6-yl methyl ketone CAS: 2879-20-1 CAS Min %: 97.5 CAS Max %: 100.0 Assay: ≥97.5% Assay Percent Range: 98% Molecular Formula: C10H10O3 Formula Weight: 178.19 MDL Number: MFCD00006823 10GR 1,4-Benzodioxan-6-yl methyl ketone, 98%

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