Heterocyclic Building Blocks

Alfa Aesar™ (1S)-(-)-beta-Pinene, 99%

Chemical Name or Material: (1S)-(-)-beta-Pinene CAS: 18172-67-3 Molecular Formula: C10H16 Formula Weight: 136.24 MDL Number: MFCD00001345 UN Number: UN2319 Beilstein: 2038282 Merck Index: 14,7446 1-(S)-(-)-PINENE, 99%100 ML

Alfa Aesar™ 1-(2-Nitrophenyl)piperazine, 95%

Chemical Name or Material: 1-(2-Nitrophenyl)piperazine CAS: 59084-06-9 Molecular Formula: C10H13N3O2 Formula Weight: 207.23 MDL Number: MFCD00040728 250MG 1-(2-Nitrophenyl)piperazine, 95% 250mg

Alfa Aesar™ 4-Chloro-6-fluoro-2-methylquinoline, 96%

Chemical Name or Material: 4-Chloro-6-fluoro-2-methylquinoline CAS: 18529-01-6 Molecular Formula: C10H7ClFN Formula Weight: 195.63 MDL Number: MFCD00272332 4-CHLORO-6-FLUORO-2-METHYLQUINOLINE250MG

Alfa Aesar™ 1-tert-Butylpiperazine, 97%

Chemical Name or Material: 1-tert-Butylpiperazine CAS: 38216-72-7 Formula Weight: 142.24 MDL Number: MFCD00049359 UN Number: UN3259 1GR 1-tert-Butylpiperazine, 97% 1g

5-Fluoroindole-3-acetic acid, 98%, ACROS Organics™

1GR 5-Fluoroindole-3-acetic acid, 98%

2,6-Pyridinedimethanol, 98%, ACROS Organics™

Chemical Name or Material: 2, 6-Pyridinedimethanol CAS: 1195-59-1 CAS Min %: 97.5 CAS Max %: 100.0 Assay: 97.5 to 102.5% (total base) Assay Percent Range: 98% Molecular Formula: C7H9NO2 Linear Formula: (C5H3N)(CH2OH)2 Formula Weight: 139.15 MDL Number: MFCD00006351 Synonym: 2, 6-Pyridyldicarbinol 100GR 2,6-Pyridinedimethanol, 98%

Alfa Aesar™ 2-Mercapto-1,3,4-thiadiazole, 98%

Chemical Name or Material: 2-Mercapto-1,3,4-thiadiazole CAS: 18686-82-3 Molecular Formula: C2H2N2S2 Formula Weight: 118.17 MDL Number: MFCD00040404 Synonym: 1,3,4-Thiadiazole-2-thiol 2-MERCAPTO-1,3,4-THIADIAZOLE, 98%,50G

7-Bromoindole, 98%, ACROS Organics™

Chemical Name or Material: 7-Bromoindole CAS: 51417-51-7 CAS Min %: 97.5 CAS Max %: 100.0 Assay: ≥97.5% Assay Percent Range: 98% Molecular Formula: C8H6BrN Formula Weight: 196.05 MDL Number: MFCD00799492 250MG 7-Bromoindole, 98%

Alfa Aesar™ Hydrogen fluoride pyridine complex, ca 70% HF

Chemical Name or Material: Hydrogen fluoride pyridine complex CAS: 62778-11-4 MDL Number: MFCD00012436 UN Number: UN1790 Beilstein: 4750151 Merck Index: 14,6821 Synonym: Olah's Reagent; Pyridinium poly(hydrogen fluoride) HYDROGEN FLUORIDE PYRIDINECOMPLEX, CA 70% HF,100G

Alfa Aesar™ 3-Pyrroline, 96%

Chemical Name or Material: 3-Pyrroline CAS: 109-96-6 Molecular Formula: C4H7N Formula Weight: 69.11 MDL Number: MFCD00005213 UN Number: UN2733 Beilstein: 103173 Merck Index: 14,8017 Synonym: 2,5-Dihydropyrrole 3-PYRROLINE, 97% 250MG

Alfa Aesar™ 4-(4-Morpholinyl)-2-(trifluoromethyl)aniline, 97%

Chemical Name or Material: 4-(4-Morpholinyl)-2-(trifluoromethyl)aniline Molecular Formula: C11H13F3N2O Formula Weight: 246.23 MDL Number: MFCD01436021 250MG 4-(4-Morpholinyl)-2-(trifluoromethyl)aniline, 97% 250mg

1-(2-Pyrazinyl)piperazine, 98%, ACROS Organics™

Chemical Name or Material: 1-(2-Pyrazinyl)piperazine Name Note: 98% CAS: 34803-68-4 CAS Min %: 97.5 CAS Max %: 100.0 Assay: ≥97.5% Assay Percent Range: 98% Molecular Formula: C8H12N4 Formula Weight: 164.21 MDL Number: MFCD00040766 1GR 1-(2-Pyrazinyl)piperazine, 98%

Alfa Aesar™ 2-Fluoro-5-(3-methyl-1-piperidinylcarbonyl)benzeneboronic acid, 97%

Chemical Name or Material: 2-Fluoro-5-(3-methyl-1-piperidinylcarbonyl)benzeneboronic acid Molecular Formula: C13H17BFNO3 Formula Weight: 265.09 MDL Number: MFCD20265259 Synonym: 2-Fluoro-5-(3-methyl-1-piperidinylcarbonyl)phenylboronic acid 250MG 2-Fluoro-5-(3-methyl-1-piperidinylcarbonyl)benzeneboronic acid, 97% 250mg

Alfa Aesar™ 5-Chloro-2-(3-chlorophenyl)benzimidazole, 95%

Chemical Name or Material: 5-Chloro-2-(3-chlorophenyl)benzimidazole Formula Weight: 263.12 MDL Number: MFCD11849216 1GR 5-Chloro-2-(3-chlorophenyl)benzimidazole, 95% 1g

1-Benzyl-4-piperidinecarboxaldehyde, 97%, ACROS Organics™

Chemical Name or Material: 1-Benzyl-4-piperidinecarboxaldehyde CAS: 22065-85-6 CAS Min %: 96.0 CAS Max %: 100.0 Assay: ≥96.0% Assay Percent Range: 97% Molecular Formula: C13H17NO Formula Weight: 203.28 1GR 1-Benzyl-4-piperidinecarboxaldehyde, 97%

Alfa Aesar™ (+/-)-beta-Hydroxy-gamma-butyrolactone, 96%

Chemical Name or Material: (+/-)-beta-Hydroxy-gamma-butyrolactone CAS: 5469-16-9 Molecular Formula: C4H6O3 Formula Weight: 102.09 MDL Number: MFCD00090014 Beilstein: 107670 (+/-)-BETA-HYDROXY-GAMMA-BUTYROLACTONE,5G

Alfa Aesar™ 3-Chlorobenzo[b]thiophene-2-carbonyl chloride, 95%

Chemical Name or Material: 3-Chlorobenzo[b]thiophene-2-carbonyl chloride CAS: 21815-91-8 Molecular Formula: C9H4Cl2OS Formula Weight: 231.1 MDL Number: MFCD00053069 UN Number: UN3261 Beilstein: 1309703 3-CHLOROBENZO(B)THIOPHENE-2-CARBONYL CHLORIDE, 95,

Alfa Aesar™ 4-(1,2,3,4-Tetrahydro-2-isoquinolinylmethyl)benzeneboronic acid pinacol ester, 95%

Chemical Name or Material: 4-(1,2,3,4-Tetrahydro-2-isoquinolinylmethyl)benzeneboronic acid pinacol ester Molecular Formula: C22H28BNO2 Formula Weight: 349.28 MDL Number: MFCD16294539 Synonym: 2-[4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)benzyl]-1,2,3,4-tetrahydroisoquinoline 5GR 4-(1,2,3,4-Tetrahydro-2-isoquinolinylmethyl)benzeneboronic acid pinacol ester, 95% 5g

Alfa Aesar™ 1,1'-Diethyl-4,4'-carbocyanine bromide, 96%

Chemical Name or Material: 1,1'-Diethyl-4,4'-carbocyanine bromide CAS: 19764-88-6 Molecular Formula: C25H25N2Br Formula Weight: 433.39 MDL Number: MFCD06409816 1GR 1,1'-Diethyl-4,4'-carbocyanine bromide, 96% 1

Alfa Aesar™ (S)-(+)-4-Phenyl-2-oxazolidinone, 98%

Chemical Name or Material: (S)-(+)-4-Phenyl-2-oxazolidinone CAS: 99395-88-7 Molecular Formula: C9H9NO2 Formula Weight: 163.18 MDL Number: MFCD00043396 (S)-(+)-4-PHENYL-2-OXAZOLIDINONE, 98% 5G

Alfa Aesar™ 2-(4-Biphenylyl)-5-(4-tert-butylphenyl)-1,3,4-oxadiazole, 99+%

Chemical Name or Material: 2-(4-Biphenylyl)-5-(4-tert-butylphenyl)-1,3,4-oxadiazole CAS: 15082-28-7 Molecular Formula: C24H22N2O Formula Weight: 354.46 MDL Number: MFCD00003101 Beilstein: 1086414 Synonym: Butyl-PBD 2-(4-BIPHENYLYL)-5-(4-TERTBUTYLPHENYL)-13,,100G

Alfa Aesar™ 3,5-Dimethyl-1H-pyrazole-1-carboxamide, 98+%

Chemical Name or Material: 3,5-Dimethyl-1H-pyrazole-1-carboxamide CAS: 934-48-5 Molecular Formula: C6H9N3O Formula Weight: 139.16 MDL Number: MFCD00003126 Beilstein: 123422 3,5-DIMETHYLPYRAZOLE-1-CARBOXAMIDE, 98+%50G

Alfa Aesar™ 3-Piperidinemethanol, 96%

Chemical Name or Material: 3-Piperidinemethanol CAS: 4606-65-9 Molecular Formula: C6H13NO Formula Weight: 115.18 MDL Number: MFCD00005997 UN Number: UN3259 Beilstein: 103058 Synonym: 3-(Hydroxymethyl)piperidine; 3-Piperidinyl carbinol 3-PIPERIDINEMETHANOL, 96% 5G

Alfa Aesar™ 2,4,6-Trichloro-5-n-propylpyrimidine, 96%

Chemical Name or Material: 2,4,6-Trichloro-5-n-propylpyrimidine CAS: 58-81-1 Molecular Formula: C7H7N2Cl3 Formula Weight: 225.5 MDL Number: MFCD22125197 1GR 2,4,6-Trichloro-5-n-propylpyrimidine, 96% 1g

2,6-Dichloropyrazine, 99+%, ACROS Organics™

Chemical Name or Material: 2, 6-Dichloropyrazine CAS: 4774-14-5 CAS Min %: 99.0 CAS Max %: 100.0 Assay: ≥99.0% Assay Percent Range: 99+% Molecular Formula: C4H2Cl2N2 Formula Weight: 148.98 1GR 2,6-Dichloropyrazine, 99+%

Alfa Aesar™ 4-[5-(4-Dimethylaminophenyl)-2-oxazolyl]benzeneboronic acid, 97%

Chemical Name or Material: 4-[5-(4-Dimethylaminophenyl)-2-oxazolyl]benzeneboronic acid CAS: 380499-66-1 Molecular Formula: C17H17BN2O3 Formula Weight: 308.14 MDL Number: MFCD08689479 Synonym: 5-(4-Dimethylaminophenyl)-2-(4-boronophenyl)oxazole 250MG 4-[5-(4-Dimethylaminophenyl)-2-oxazolyl]benzeneboronic acid, 97% 250mg

Alfa Aesar™ Pyridine-2,6-dicarbonyl dichloride, 98%

Chemical Name or Material: Pyridine-2,6-dicarbonyl dichloride CAS: 3739-94-4 Molecular Formula: C7H3Cl2NO2 Formula Weight: 204.01 MDL Number: MFCD00006289 UN Number: UN3261 Beilstein: 131556 Synonym: Pyridine-2,6-dicarboxylic acid chloride 2,6-PYRIDINEDICARBONYL DICHLORIDE, 98% 1G

1-(Trimethylsilyl)-1H-benzotriazole, 97%, ACROS Organics™

Chemical Name or Material: 1-(Trimethylsilyl)-1H-benzotriazole CAS: 43183-36-4 CAS Min %: 96.0 CAS Max %: 100.0 Assay: ≥96.0% Assay Percent Range: 97% Molecular Formula: C9H13N3Si Formula Weight: 191.31 5GR 1-(Trimethylsilyl)-1H-benzotriazole, 97%

Alfa Aesar™ 2-Methylpyridine-4-boronic acid pinacol ester, 95%, may contain up to 3% water

Chemical Name or Material: 2-Methylpyridine-4-boronic acid pinacol ester CAS: 660867-80-1 Molecular Formula: C12H18BNO2 Formula Weight: 219.09 MDL Number: MFCD08061590 Synonym: 2-Methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine 2-METHYLPYRIDINE-4-BORONIC ACID PINACOL ESTER 95%

Alfa Aesar™ 2-Amino-5-bromo-4-(trifluoromethyl)pyridine, 95%

Chemical Name or Material: 2-Amino-5-bromo-4-(trifluoromethyl)pyridine CAS: 944401-56-3 Formula Weight: 241.01 MDL Number: MFCD09864896 Beilstein: 15519034 1GR 2-Amino-5-bromo-4-(trifluoromethyl)pyridine, 95% 1g

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