Heterocyclic Building Blocks

Alfa Aesar™ Methyl isoquinoline-3-carboxylate, 98%

Chemical Name or Material: Methyl isoquinoline-3-carboxylate CAS: 27104-73-0 Molecular Formula: C11H9NO2 Formula Weight: 187.2 MDL Number: MFCD00075138 Beilstein: 473630 Synonym: Isoquinoline-3-carboxylic acid methyl ester METHYL ISOQUINOLINE-3-CARBOXYLATE, 98%,5G

Alfa Aesar™ Thymolphthalein

Chemical Name or Material: Thymolphthalein CAS: 125-20-2 Molecular Formula: C28H30O4 Formula Weight: 430.55 MDL Number: MFCD00005909 Beilstein: 359413 Merck Index: 14,9401 THYMOLPHTHALEIN 250G

Alfa Aesar™ 1-Methyl-2-phenylindole, 99%

Chemical Name or Material: 1-Methyl-2-phenylindole CAS: 3558-24-5 Molecular Formula: C15H13N Formula Weight: 207.28 MDL Number: MFCD00022892 Beilstein: 148770 1-METHYL-2-PHENYLINDOLE, 99%,50G

N,N'-Di-BOC-1H-pyrazole-1-carboxamidine, 98%, Acros Organics

Chemical Name or Material: N, N'-Di-BOC-1H-pyrazole-1-carboxamidine Assay Percent Range: 98% Molecular Formula: C14H22N4O4 Formula Weight: 310.35 1GR N,N'-Di-BOC-1H-pyrazole-1-carboxamidine, 98%

2-Mercaptopyridine-N-oxide, sodium salt monohydrate, 98%, ACROS Organics™

Chemical Name or Material: 2-Mercaptopyridine-N-oxide, sodium salt monohydrate Name Note: 98% CAS: 304675-78-3 CAS Min %: 97.5 CAS Max %: 100.0 CAS: 3811-73-2 Assay: ≥97.5% Assay Percent Range: 98% Molecular Formula: C5H4NNaOS·H2O Formula Weight: 167.15 MDL Number: MFCD00151244 Synonym: 2-Pyridinethiol-1-oxide, sodium salt monohydrate 5GR 2-Mercaptopyridine-N-oxide, sodium salt hydrate, 98%

Alfa Aesar™ 2-Mercapto-4-methylpyrimidine hydrochloride, 99%

Chemical Name or Material: 2-Mercapto-4-methylpyrimidine hydrochloride CAS: 6959-66-6 Molecular Formula: C5H6N2S·HCl Formula Weight: 162.64 MDL Number: MFCD00012783 Beilstein: 3691520 Synonym: 4-Methylpyrimidine-2-thiol hydrochloride 2-MERCAPTO-4-METHYLPYRIMIDINE HCLCHLORIDE,100G

Alfa Aesar™ Nalpha-Boc-Nomega-(2,2,4,6,7-pentamethyl-2,3-dihydrobenzo[b]furan-5-sulfonyl)-L-arginine, 96%

Chemical Name or Material: Nalpha-Boc-Nomega-(2,2,4,6,7-pentamethyl-2,3-dihydrobenzo[b]furan-5-sulfonyl)-L-arginine CAS: 200124-22-7 Molecular Formula: C24H38N4O7S Formula Weight: 526.65 MDL Number: MFCD00236821 Synonym: Boc-Arg(Pbf)-OH; Nalpha-Boc-Nomega-Pbf-L-arginine 1GR N^a-Boc-N^w-(2,2,4,6,7-pentamethyl-2,3-dihydrobenzo[b]furan-5-sulfonyl)-L-arginine, 96% 1g

Alfa Aesar™ 2-(3-Methoxyphenyl)-4-methylthiazole-5-carboxylic acid, 97%

Chemical Name or Material: 2-(3-Methoxyphenyl)-4-methylthiazole-5-carboxylic acid CAS: 879636-95-0 Molecular Formula: C12H11NO3S Formula Weight: 249.28 MDL Number: MFCD06857927 250MG 2-(3-Methoxyphenyl)-4-methylthiazole-5-carboxylic acid, 97% 250mg

Alfa Aesar™ 2-Ethyl-4,4-dimethyl-2-oxazoline, 97%

Chemical Name or Material: 2-Ethyl-4,4-dimethyl-2-oxazoline CAS: 5146-88-3 Molecular Formula: C7H13NO Formula Weight: 127.19 MDL Number: MFCD00014506 UN Number: UN1993 2-ETHYL-4,4-DIMETHYL-2-OXAZOLINE, 97%,100G

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

Chemical Name or Material: 2-Chloro-N-(4-methylphenyl)pyridine-4-carboxamide CAS: 680217-41-8 Molecular Formula: C13H11ClN2O Formula Weight: 246.69 MDL Number: MFCD00278151 Synonym: 2-Chloro-N-(p-tolyl)isonicotinamide; 2-Chloro-N-(p-tolyl)pyridine-4-carboxamide 1GR 2-Chloro-N-(4-methylphenyl)pyridine-4-carboxamide, 95% 1g

Alfa Aesar™ Piperonylonitrile, 97%

Chemical Name or Material: Piperonylonitrile CAS: 4421-09-4 Molecular Formula: C8H5NO2 Formula Weight: 147.13 MDL Number: MFCD00005820 UN Number: UN3439 Beilstein: 6224 Synonym: 1,3-Benzodioxole-5-carbonitrile; 3,4-(Methylenedioxy)benzonitrile PIPERONYLONITRILE, 98% 5G

Alfa Aesar™ 1-Boc-3-hydroxypiperidine, 97%

Chemical Name or Material: 1-Boc-3-hydroxypiperidine CAS: 85275-45-2 Molecular Formula: C10H19NO3 Formula Weight: 201.27 MDL Number: MFCD02093938 Beilstein: 4180859 Synonym: 1-Boc-3-piperidinol; 1-(tert-Butoxycarbonyl)-3-hydroxypiperidine 1-BOC-3-HYDROXYPIPERIDINE,97%,1G

Alfa Aesar™ Ethyl indole-3-acetate, 98+%

Chemical Name or Material: Ethyl indole-3-acetate CAS: 778-82-5 Molecular Formula: C12H13NO2 Formula Weight: 203.24 MDL Number: MFCD00005635 Beilstein: 171682 Synonym: Indole-3-acetic acid ethyl ester ETHYL INDOLE-3-ACETATE, 98+%,5G

Alfa Aesar™ 2,3-Dicyano-6-methyl-5-phenylpyrazine, 97%

Chemical Name or Material: 2,3-Dicyano-6-methyl-5-phenylpyrazine CAS: 52109-67-8 Molecular Formula: C13H8N4 Formula Weight: 220.23 MDL Number: MFCD05863478 UN Number: UN3439 5GR 2,3-Dicyano-6-methyl-5-phenylpyrazine, 97% 5g

5-Bromo-2-(trifluoromethyl)pyridine, 97%, Acros Organics

Chemical Name or Material: 5-Bromo-2-(trifluoromethyl)pyridine Assay Percent Range: 97% Molecular Formula: C6H3BrF3N Formula Weight: 226 5GR 5-Bromo-2-(trifluoromethyl)pyridine, 97%

Thioisonicotinamide, 97%, ACROS Organics™

Chemical Name or Material: Thioisonicotinamide CAS: 2196-13-6 Assay: ≥96.0% (HPLC) Assay Percent Range: 97% Molecular Formula: C6H6N2S Formula Weight: 138.19 MDL Number: MFCD00006437 25GR Thioisonicotinamide, 97%

2,6-Dimethyl-γ-pyrone, 99%, ACROS Organics™

Chemical Name or Material: 2, 6-Dimethyl-gamma-pyrone CAS: 1004-36-0 CAS Min %: 98.5 CAS Max %: 100.0 Assay: ≥98.5% Assay Percent Range: 99% Molecular Formula: C7H8O2 Formula Weight: 124.14 MDL Number: MFCD00006579 Synonym: 2, 6-Dimethyl-4H-pyran-4-one 500GR 2,6-Dimethyl-gamma-pyrone, 99%

Alfa Aesar™ 3-[2-(4-Morpholinyl)ethylcarbamoyl]benzeneboronic acid hydrochloride, 98%

Chemical Name or Material: 3-[2-(4-Morpholinyl)ethylcarbamoyl]benzeneboronic acid hydrochloride CAS: 957060-89-8 Molecular Formula: C13H19BN2O4·HCl Formula Weight: 314.58 MDL Number: MFCD09027255 1GR 3-[2-(4-Morpholinyl)ethylcarbamoyl]benzeneboronic acid hydrochloride, 98% 1g

Alfa Aesar™ 2-(2-Methoxyphenyl)thiazolidine, 97%

Chemical Name or Material: 2-(2-Methoxyphenyl)thiazolidine CAS: 40790-78-1 Formula Weight: 195.28 MDL Number: MFCD00805017 Synonym: 2-(2-Thiazolidinyl)anisole 1GR 2-(2-Methoxyphenyl)thiazolidine, 97% 1g

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

Chemical Name or Material: 2-(4-Ethylphenyl)thiazole-4-carboxylic acid Molecular Formula: C12H11NO2S Formula Weight: 233.28 MDL Number: MFCD07324809 5GR 2-(4-Ethylphenyl)thiazole-4-carboxylic acid, 97% 5g

Alfa Aesar™ (+/-)-1-Boc-3-methylpiperazine, 97%

Chemical Name or Material: (+/-)-1-Boc-3-methylpiperazine CAS: 120737-59-9 Molecular Formula: C10H20N2O2 Formula Weight: 200.28 MDL Number: MFCD03001706 25GR (¬+)-1-Boc-3-methylpiperazine, 97% 25g

2-(4-Bromophenyl)-1,3-dioxolane +98%, ACROS Organics™

Chemical Name or Material: 2-(4-Bromophenyl)-1, 3-dioxolane CAS: 10602-01-4 CAS Min %: 98.0 CAS Max %: 100.0 Assay: ≥98.0% Assay Percent Range: 98+% Molecular Formula: C9H9BrO2 Formula Weight: 229.07 MDL Number: MFCD01318950 1GR 2-(4-Bromophenyl)-1,3-dioxolane, 98+%

5,6-Dimethyl-1H-benzotriazole Hydrate 99%, ACROS Organics™

Chemical Name or Material: 5, 6-Dimethyl-1H-benzotriazole hydrate Name Note: 99% CAS: 4184-79-6 CAS Min %: 98.5 CAS Max %: 100.0 Assay: ≥98.5% (on dry substance) Assay Percent Range: 99% Molecular Formula: C8H9N3·xH2O Formula Weight: 147.18 MDL Number: MFCD00149344 5GR 5,6-Dimethyl-1H-benzotriazole hydrate, 99%

N-BOC-4-Piperidone, 99%, ACROS Organics™

Chemical Name or Material: N-BOC-4-Piperidone CAS: 79099-07-3 CAS Min %: 98.5 CAS Max %: 100.0 Assay: ≥98.5% Assay Percent Range: 99% Molecular Formula: C10H17NO3 Formula Weight: 199.25 Synonym: N-(tert-Butoxycarbonyl)-4-piperidone 25GR N-BOC-4-Piperidone, 99%

Alfa Aesar™ N-(5-Hexynyl)phthalimide, 97%

Chemical Name or Material: N-(5-Hexynyl)phthalimide CAS: 6097-08-1 Molecular Formula: C14H13NO2 Formula Weight: 227.26 MDL Number: MFCD00671372 Synonym: 6-Phthalimido-1-hexyne 25GR N-(5-Hexynyl)phthalimide, 97% 25g

Alfa Aesar™ 4,7-Dibromo-2,1,3-benzothiadiazole, 97%

Chemical Name or Material: 4,7-Dibromo-2,1,3-benzothiadiazole CAS: 15155-41-6 Molecular Formula: C6H2Br2N2S Formula Weight: 293.97 MDL Number: MFCD00658844 UN Number: UN2811 Synonym: 4,7-Dibromobenzo[c]-1,2,5-thiadiazole 5GR 4,7-Dibromo-2,1,3-benzothiadiazole, 97% 5g

Alfa Aesar™ 1-Benzhydryl-3-azetidinol hydrochloride, 95%

Chemical Name or Material: 1-Benzhydryl-3-azetidinol hydrochloride CAS: 90604-02-7 Molecular Formula: C16H17NO·HCl Formula Weight: 275.78 MDL Number: MFCD00209447 1-BENZHYDRYL-3-AZETIDINOL HYDROCHLORIDE, 95% 5G

Alfa Aesar™ Imidazole-4-carboxaldehyde, 97%

Chemical Name or Material: Imidazole-4-carboxaldehyde CAS: 3034-50-2 Molecular Formula: C4H4N2O Formula Weight: 96.09 MDL Number: MFCD00173726 Synonym: 4-Formylimidazole IMIDAZOLE-4-CARBOXALDEHYDE97%,5G

Alfa Aesar™ 2-Propionylfuran, 97%

Chemical Name or Material: 2-Propionylfuran CAS: 3194-15-8 Molecular Formula: C7H8O2 Formula Weight: 124.14 MDL Number: MFCD00020936 Synonym: Ethyl 2-furyl ketone; 1-(2-Furyl)-1-propanone 1-(2-FURYL)PROPAN-1-ONE, 97% 25G

Alfa Aesar™ 2,4-Dihydroxy-3-nitropyridine, 99%

Chemical Name or Material: 2,4-Dihydroxy-3-nitropyridine CAS: 89282-12-2 Molecular Formula: C5H4N2O4 Formula Weight: 156.1 MDL Number: MFCD01075671 Beilstein: 149558 Synonym: 4-Hydroxy-3-nitro-2-pyridone 2,4-DIHYDROXY-3-NITROPYRIDINE, 99%,5G

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