Heterocyclic Building Blocks

Indole-3-carboxaldehyde 97%, ACROS Organics™

Chemical Name or Material: Indole-3-carboxaldehyde Name Note: 97% CAS: 487-89-8 Assay: ≥96.0% Assay Percent Range: 97% Molecular Formula: C9H7NO Formula Weight: 145.16 MDL Number: MFCD00005622 100GR Indole-3-carboxaldehyde, 97%

Alfa Aesar™ (+/-)-1-Boc-3-aminopyrrolidine, 96%

Chemical Name or Material: (+/-)-1-Boc-3-aminopyrrolidine CAS: 186550-13-0 Molecular Formula: C9H18N2O2 Formula Weight: 186.25 MDL Number: MFCD01861220 UN Number: UN2735 Synonym: (+/-)-1-tert-Butoxycarbonyl-3-aminopyrrolidine; tert-Butyl 3-aminopyrrolidine-1-carboxylate (±)-1-BOC-3-AMINOPYRROLID INE, 96% 1G

Alfa Aesar™ Benzo[b]thiophene 1,1-dioxide, 98%

Chemical Name or Material: Benzo[b]thiophene 1,1-dioxide CAS: 825-44-5 Molecular Formula: C8H6O2S Formula Weight: 166.2 MDL Number: MFCD00052178 Beilstein: 116442 Synonym: Thianaphthene 1,1-dioxide THIANAPHTHENE-1,1-DIOXIDE,98%,25G

Alfa Aesar™ N-(2-Chloro-3-pyridyl)maleimide

Chemical Name or Material: N-(2-Chloro-3-pyridyl)maleimide CAS: 278610-39-2 Molecular Formula: C9H5ClN2O2 Formula Weight: 208.61 MDL Number: MFCD00111928 Synonym: N-(2-Chloropyridin-3-yl)maleimide N-(2-CHLOROPYRIDIN-3-YL)MALEIMIDE5G

2-Chloro-4-aminopyridine, 97%, ACROS Organics™

Chemical Name or Material: 2-Chloro-4-pyridinamine CAS: 14432-12-3 CAS Min %: 96.0 CAS Max %: 100.0 Assay: ≥96.0% Assay Percent Range: 97% Molecular Formula: C5H5ClN2 Formula Weight: 128.56 5GR 2-Chloro-4-aminopyridine, 97%

Alfa Aesar™ 6-Methyl-1,2,3,4-tetrahydroquinoline, 98%

Chemical Name or Material: 6-Methyl-1,2,3,4-tetrahydroquinoline CAS: 91-61-2 Molecular Formula: C10H13N Formula Weight: 147.22 MDL Number: MFCD00023887 Beilstein: 122515 6-METHYL-1,2,3,4-TETRAHYDROQUINOLINE, 98%,50G

4-Pyrazolecarboxylic acid, 97%, ACROS Organics™

Chemical Name or Material: 4-Pyrazolecarboxylic acid CAS: 37718-11-9 CAS Min %: 96.0 CAS Max %: 100.0 Assay: ≥96.0% Assay Percent Range: 97% Molecular Formula: C4H4N2O2 Formula Weight: 112.09 MDL Number: MFCD00011558 500MG 4-Pyrazolecarboxylic acid, 97%

Alfa Aesar™ Bicyclo[2.2.2]oct-7-ene-2,3,5,6-tetracarboxylic dianhydride, 97%

Chemical Name or Material: Bicyclo[2.2.2]oct-7-ene-2,3,5,6-tetracarboxylic dianhydride CAS: 1719-83-1 Molecular Formula: C12H8O6 Formula Weight: 248.19 MDL Number: MFCD00082228 Beilstein: 294213 BICYCLO(2.2.2)OCT-7-ENE-2,3,5,6-TETRACARBOX.ACID10

Alfa Aesar™ 4-Cyanopyridine, 98%

Chemical Name or Material: 4-Cyanopyridine CAS: 100-48-1 Molecular Formula: C6H4N2 Formula Weight: 104.11 MDL Number: MFCD00006417 Beilstein: 107712 Synonym: Isonicotinonitrile; Pyridine-4-carbonitrile 4-CYANOPYRIDINE, 98%10G

Alfa Aesar™ Tetrachlorothiophene, 98%

Chemical Name or Material: Tetrachlorothiophene CAS: 6012-97-1 Molecular Formula: C4Cl4S Formula Weight: 221.92 MDL Number: MFCD00005422 UN Number: UN2811 Beilstein: 118374 1GR Tetrachlorothiophene, 98%

Alfa Aesar™ Ethyl 2-amino-4-methylthiazole-5-carboxylate, 97%

Chemical Name or Material: Ethyl 2-amino-4-methylthiazole-5-carboxylate CAS: 7210-76-6 Molecular Formula: C7H10N2O2S Formula Weight: 186.22 MDL Number: MFCD00123414 Synonym: 2-Amino-4-methylthiazole-5-carboxylic acid ethyl ester ETHYL 2-AMINO-4-METHYLTHIAZOLE-5-CARBOXYLATE,5G

Alfa Aesar™ 4-(2-Chlorophenyl)tetrahydropyran-4-carboxaldehyde, 98%

Chemical Name or Material: 4-(2-Chlorophenyl)tetrahydropyran-4-carboxaldehyde CAS: 902836-47-9 Molecular Formula: C12H13ClO2 Formula Weight: 224.69 MDL Number: MFCD08061003 4-(2-CHLOROPHENYL)TETRAHYDRO-2H-PYRAN-4-CARBOXAL-1

Alfa Aesar™ 3-(Acetamidomethyl)pyridine, 97%

Chemical Name or Material: 3-(Acetamidomethyl)pyridine CAS: 22977-34-0 Molecular Formula: C8H10N2O Formula Weight: 150.18 MDL Number: MFCD00495392 3-(ACETAMIDOMETHYL)PYRIDINE, 97%,2,5G

Alfa Aesar™ Methyl 3-methylbenzo[b]thiophene-2-carboxylate, 97%

Chemical Name or Material: Methyl 3-methylbenzo[b]thiophene-2-carboxylate CAS: 3133-81-1 Molecular Formula: C11H10O2S Formula Weight: 206.26 MDL Number: MFCD02683110 Synonym: 3-Methylbenzo[b]thiophene-2-carboxylic acid methyl ester; Methyl 3-methylthianaphthene-2-carboxylate METHYL 3-METHYLBENZO(B)THIOPHENE-2-CARBOXYL,25G

Alfa Aesar™ 2-Methyl-4-(trifluoromethyl)thiazole-5-carboxylic acid, 98%

Chemical Name or Material: 2-Methyl-4-(trifluoromethyl)thiazole-5-carboxylic acid CAS: 117724-63-7 Formula Weight: 211.16 MDL Number: MFCD00173295 Beilstein: 9848326 1GR 2-Methyl-4-(trifluoromethyl)thiazole-5-carboxylic acid, 98% 1g

Alfa Aesar™ 2-Amino-5-trifluoromethyl-1,3,4-thiadiazole, 98%

Chemical Name or Material: 2-Amino-5-trifluoromethyl-1,3,4-thiadiazole CAS: 10444-89-0 Molecular Formula: C3H2F3N3S Formula Weight: 169.13 MDL Number: MFCD00003109 Beilstein: 513140 2-AMINO-5-TRIFLUOROMETHYL-1,3,4-THIADIAZOLE, 98%25

Alfa Aesar™ 2-Chloro-N-(4-fluorophenyl)pyridine-4-carboxamide, 95%

Chemical Name or Material: 2-Chloro-N-(4-fluorophenyl)pyridine-4-carboxamide CAS: 1019383-51-7 Molecular Formula: C12H8ClFN2O Formula Weight: 250.65 MDL Number: MFCD11128638 Synonym: 2-Chloro-N-(4-fluorophenyl)isonicotinamide 250MG 2-Chloro-N-(4-fluorophenyl)pyridine-4-carboxamide, 95% 250mg

Alfa Aesar™ Ethyl 5-methylindole-2-carboxylate, 99%

Chemical Name or Material: Ethyl 5-methylindole-2-carboxylate CAS: 16382-15-3 Molecular Formula: C12H13NO2 Formula Weight: 203.24 MDL Number: MFCD00022703 Beilstein: 159437 Synonym: 5-Methylindole-2-carboxylic acid ethyl ester ETHYL 5-METHYLINDOLE-2-CARBOXYLATE, 99%,5G

Alfa Aesar™ 2,6-Difluoropyridine, 98+%

Chemical Name or Material: 2,6-Difluoropyridine CAS: 1513-65-1 Molecular Formula: C5H3F2N Formula Weight: 115.08 MDL Number: MFCD00006227 UN Number: UN1993 Beilstein: 1422549 2,6-DIFLUOROPYRIDINE, 95+%100G

Alfa Aesar™ 3-(4-Bromophenyl)-4-(3,4-dichlorophenyl)-5-methyl-4H-1,2,4-triazole, 97%

Chemical Name or Material: 3-(4-Bromophenyl)-4-(3,4-dichlorophenyl)-5-methyl-4H-1,2,4-triazole Molecular Formula: C15H10BrCl2N3 Formula Weight: 383.07 MDL Number: MFCD22683144 500MG 3-(4-Bromophenyl)-4-(3,4-dichlorophenyl)-5-methyl-4H-1,2,4-triazole, 97% 500mg

Alfa Aesar™ 5-Chloro-3-methyl-1-phenyl-1H-pyrazole-4-carbonitrile, 99%

Chemical Name or Material: 5-Chloro-3-methyl-1-phenyl-1H-pyrazole-4-carbonitrile CAS: 51626-33-6 Molecular Formula: C11H8ClN3 Formula Weight: 217.66 MDL Number: MFCD00455809 UN Number: UN3439 Synonym: 5-Chloro-4-cyano-3-methyl-1-phenylpyrazole 5-CHLORO-3-METHYL-1-PHENYL1H-PYRAZOLE-4-CARBONIT-1

Alfa Aesar™ 2-Cyclohexyloxypyridine-3-boronic acid pinacol ester, 99%

Chemical Name or Material: 2-Cyclohexyloxypyridine-3-boronic acid pinacol ester CAS: 1073354-43-4 Molecular Formula: C17H26BNO3 Formula Weight: 303.21 MDL Number: MFCD07781171 Synonym: 2-Cyclohexyloxy-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine 2-(CYCLOHEXYLOXY)-3-(4,4,5,5-TETRAMETHYL-1,3,2- 1G

Alfa Aesar™ 5-Amino-2-methylbenzothiazole, 99%

Chemical Name or Material: 5-Amino-2-methylbenzothiazole CAS: 13382-43-9 Molecular Formula: C8H8N2S Formula Weight: 164.22 MDL Number: MFCD00226291 5-AMINO-2-METHYLBENZOTHIAZOLE, 99%,2G

Alfa Aesar™ 4-Chloro-8-methoxy-2-methylquinoline, 95%

Chemical Name or Material: 4-Chloro-8-methoxy-2-methylquinoline CAS: 64951-58-2 Molecular Formula: C11H10ClNO Formula Weight: 207.66 MDL Number: MFCD00272401 Synonym: 4-Chloro-8-methoxyquinaldine 4-CHLORO-8-METHOXY-2-METHYLQUINOLINE5G

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

Chemical Name or Material: 2-Chloro-5-(4-ethoxycarbonyl-1-piperidinylcarbonyl)benzeneboronic acid Molecular Formula: C15H19BClNO5 Formula Weight: 339.58 MDL Number: MFCD22125042 Synonym: 2-Chloro-5-(4-ethoxycarbonyl-1-piperidinylcarbonyl)phenylboronic acid 1GR 2-Chloro-5-(4-ethoxycarbonyl-1-piperidinylcarbonyl)benzeneboronic acid, 97% 1g

Alfa Aesar™ 1-(2-Chlorophenyl)piperazine monohydrochloride monohydrate, 98%

Chemical Name or Material: 1-(2-Chlorophenyl)piperazine monohydrochloride monohydrate CAS: 1082699-15-7 Molecular Formula: C10H13ClN2·HCl·H2O Formula Weight: 251.16 (233.14 Anhydrous) MDL Number: MFCD00012761 Beilstein: 5652889 1-(2-CHLOROPHENYL)PIPERAZINE HYDROCHLORIDE, 98%25G

Alfa Aesar™ Methyl 3-aminopyridine-4-carboxylate, 97%

Chemical Name or Material: Methyl 3-aminopyridine-4-carboxylate CAS: 55279-30-6 Molecular Formula: C7H8N2O2 Formula Weight: 152.2 MDL Number: MFCD02082535 Synonym: Methyl 3-aminoisonicotinate; 3-Aminopyridine-4-carboxylic acid methyl ester 10GR Methyl 3-aminopyridine-4-carboxylate, 97% 10

Alfa Aesar™ 7-Iodoisatin, 97%

Chemical Name or Material: 7-Iodoisatin CAS: 20780-78-3 Molecular Formula: C8H4INO2 Formula Weight: 273.03 MDL Number: MFCD01248407 Synonym: 7-Iodo-1H-indole-2,3-dione 250MG 7-Iodoisatin, 97%

Alfa Aesar™ Pyrrole-2-carboxaldehyde, 99%

Chemical Name or Material: Pyrrole-2-carboxaldehyde CAS: 1003-29-8 Molecular Formula: C5H5NO Formula Weight: 95.1 MDL Number: MFCD00005217 Beilstein: 105745 PYRROLE-2-CARBOXALDEHYDE, 99%100G

Alfa Aesar™ 5-Fluoro-2-methoxypyridine-3-carboxaldehyde, 98%

Chemical Name or Material: 5-Fluoro-2-methoxypyridine-3-carboxaldehyde CAS: 351410-62-3 Formula Weight: 155.13 MDL Number: MFCD04972398 Beilstein: 14158282 Synonym: 5-Fluoro-2-methoxynicotinaldehyde 1GR 5-Fluoro-2-methoxypyridine-3-carboxaldehyde, 98% 1g

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