Heterocyclic Building Blocks

Alfa Aesar™ 4-Chloroindole, 97%

Chemical Name or Material: 4-Chloroindole CAS: 25235-85-2 Formula Weight: 151.59 MDL Number: MFCD00005665 Beilstein: 114880

Alfa Aesar™ 5-Methylisoxazole-3-carboxylic acid, 98+%

Chemical Name or Material: 5-Methylisoxazole-3-carboxylic acid CAS: 3405-77-4 Molecular Formula: C5H5NO3 Formula Weight: 127.1 MDL Number: MFCD01318162 Beilstein: 114094

2,2'-Isopropylidenebis[(4S)-4-tert-butyl-2-oxazoline], 99%, 98% e.e., ACROS Organics™

Chemical Name or Material: 2, 2'-Isopropylidenebis[(4S)-4-tert-butyl-2-oxazoline] Name Note: 98% ee CAS: 131833-93-7 CAS Min %: 98.5 CAS Max %: 100.0 Assay: ≥98.5% Assay Percent Range: 99% Molecular Formula: C17H30N2O2 Formula Weight: 294.44 MDL Number: MFCD00192243

Alfa Aesar™ 2,2,6,6-Tetramethyl-4-piperidone monohydrate, 99%

Chemical Name or Material: 2,2,6,6-Tetramethyl-4-piperidone monohydrate CAS: 10581-38-1 Molecular Formula: C9H17NO·H2O Formula Weight: 173.26 (155.24 Anhydrous) MDL Number: MFCD00149393

3-Aminoquinoline, 99+%, ACROS Organics™

Chemical Name or Material: 3-Aminoquinoline Name Note: 99+% CAS: 580-17-6 CAS Min %: 99.0 CAS Max %: 100.0 Assay: ≥99.0% Assay Percent Range: 99+% Molecular Formula: C9H8N2 Formula Weight: 144.18 MDL Number: MFCD00006772 Synonym: 3-Quinolinamine

Alfa Aesar™ 1-Boc-4-(methoxycarbonyl)pyrrolidine-3-carboxylic acid, 96%

Chemical Name or Material: 1-Boc-4-(methoxycarbonyl)pyrrolidine-3-carboxylic acid CAS: 1210863-93-6 Molecular Formula: C12H19NO6 Formula Weight: 273.29 MDL Number: MFCD07781134 Synonym: 1-(tert-Butoxycarbonyl)-4-(methoxycarbonyl)pyrrolidine-3-carboxylic acid; Pyrrolidine-1,3,4-tricarboxylic acid 1-tert-butyl 3-methyl diester

4-Hydroxypiperidine, 99+%, ACROS Organics™

Chemical Name or Material: 4-Hydroxypiperidine Name Note: 99+% CAS: 5382-16-1 CAS Min %: 99.0 CAS Max %: 100.0 Assay Percent Range: 99+% Molecular Formula: C5H11NO Formula Weight: 101.15 MDL Number: MFCD00005999 Synonym: 4-Piperidinol

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

Chemical Name or Material: 2, 6-Diaminopurine Name Note: 98% CAS: 1904-98-9 CAS Min %: 97.5 CAS Max %: 100.0 Assay: ≥97.5% Assay Percent Range: 98% Molecular Formula: C5H6N6 Formula Weight: 150.14 MDL Number: MFCD00071537

Alfa Aesar™ 2,4-Dichloro-5-methylpyridine, 96%

Chemical Name or Material: 2,4-Dichloro-5-methylpyridine CAS: 56961-78-5 Formula Weight: 162.02 MDL Number: MFCD08704813

Alfa Aesar™ 2-Methoxypyridine-3-boronic acid, 98%

Chemical Name or Material: 2-Methoxypyridine-3-boronic acid CAS: 163105-90-6 Molecular Formula: C6H8BNO3 Formula Weight: 152.95 MDL Number: MFCD03411572 Synonym: 2-Methoxy-3-pyridylboronic acid

Alfa Aesar™ Homopiperazine, 98%

Chemical Name or Material: Homopiperazine CAS: 505-66-8 Molecular Formula: C5H12N2 Formula Weight: 100.17 MDL Number: MFCD00006933 UN Number: UN3259 Beilstein: 102711 Synonym: 1,4-Diazacycloheptane; Hexahydro-1,4-diazepine

2-Mercaptopyridine-N-oxide, 99%, ACROS Organics™

Chemical Name or Material: 2-Mercaptopyridine-N-oxide CAS: 1121-31-9 CAS Min %: 98.5 CAS Max %: 100.0 Assay: ≥98.5% Assay Percent Range: 99% Molecular Formula: C5H5NOS Formula Weight: 127.16 MDL Number: MFCD00006196 Synonym: 1-Hydroxy-2(1H)-pyridinethione

Alfa Aesar™ 6-Methyl-3-pyridyl trifluoromethanesulfonate, 96%

Chemical Name or Material: 6-Methyl-3-pyridyl trifluoromethanesulfonate CAS: 111770-91-3 Molecular Formula: C7H6F3NO3S Formula Weight: 241.19 MDL Number: MFCD06798124 Synonym: 2-Picolin-5-yl trifluoromethanesulfonate

Alfa Aesar™ 3,3-Dimethylglutaric anhydride, 97%

Chemical Name or Material: 3,3-Dimethylglutaric anhydride CAS: 4160-82-1 Molecular Formula: C7H10O3 Formula Weight: 142.15 MDL Number: MFCD00006684 Synonym: 3,3-Dimethyltetrahydro-2H-pyran-2,6-dione

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

Alfa Aesar™ 2-Methoxypyridine-3-carboxaldehyde, 97%

Chemical Name or Material: 2-Methoxypyridine-3-carboxaldehyde CAS: 71255-09-9 Molecular Formula: C7H7NO2 Formula Weight: 137.14 MDL Number: MFCD04115112 Synonym: 2-Methoxynicotinaldehyde

4-Nitro-3-pyrazolecarboxylic acid, 95%, ACROS Organics™

Chemical Name or Material: 4-Nitro-3-pyrazolecarboxylic acid CAS: 5334-40-7 CAS Min %: 94.0 CAS Max %: 100.0 Assay Percent Range: 95% Molecular Formula: C4H3N3O4 Formula Weight: 157.08 MDL Number: MFCD00090899

Alfa Aesar™ 2-Amino-4-chlorobenzothiazole, 97%

Chemical Name or Material: 2-Amino-4-chlorobenzothiazole CAS: 19952-47-7 Molecular Formula: C7H5ClN2S Formula Weight: 184.65 MDL Number: MFCD00005791 Beilstein: 136784

Alfa Aesar™ 3-Isobutylpyridine, 99%

Chemical Name or Material: 3-Isobutylpyridine CAS: 14159-61-6 Molecular Formula: C9H13N Formula Weight: 135.21 MDL Number: MFCD02683082 Synonym: 3-(2-Methylpropyl)pyridine

Alfa Aesar™ Julolidine hydrobromide, 97%

Chemical Name or Material: Julolidine hydrobromide CAS: 83646-41-7 Formula Weight: 254.17 MDL Number: MFCD00198009 UN Number: UN2923 Synonym: 2,3,6,7-Tetrahydro-1H,5H-benzo[ij]quinolizine hydrobromide

Alfa Aesar™ 1-(2-Bromoethyl)-4-ethyl-1,4-dihydro-5H-tetrazol-5-one, 95%

Chemical Name or Material: 1-(2-Bromoethyl)-4-ethyl-1,4-dihydro-5H-tetrazol-5-one CAS: 84501-67-7 Formula Weight: 221.06 MDL Number: MFCD16251259

Alfa Aesar™ Piperonylic acid, 98+%

Chemical Name or Material: Piperonylic acid CAS: 94-53-1 Molecular Formula: C8H6O4 Formula Weight: 166.13 MDL Number: MFCD00005830 Beilstein: 150206 Merck Index: 14,7477 Synonym: 1-3-Benzodioxole-5-carboxylic acid; 3,4-(Methylenedioxy)benzoic acid

Alfa Aesar™ 2,4,6-Trichloropyrimidine-5-carboxaldehyde, 97%

Chemical Name or Material: 2,4,6-Trichloropyrimidine-5-carboxaldehyde CAS: 50270-27-4 Formula Weight: 211.43 MDL Number: MFCD02257700 UN Number: UN2811 Beilstein: 744505

Alfa Aesar™ Methyl 5-methylisoxazole-3-carboxylate, 97%

Chemical Name or Material: Methyl 5-methylisoxazole-3-carboxylate CAS: 19788-35-3 Molecular Formula: C6H7NO3 Formula Weight: 141.13 MDL Number: MFCD00015895 Beilstein: 115704 Synonym: 5-Methylisoxazole-3-carboxylic acid methyl ester

Alfa Aesar™ 2-Amino-6-hydroxy-8-mercaptopurine, 97%

Chemical Name or Material: 2-Amino-6-hydroxy-8-mercaptopurine CAS: 28128-40-7 Molecular Formula: C5H5N5OS Formula Weight: 183.19 MDL Number: MFCD00075623 Beilstein: 982327

Alfa Aesar™ Furo[3,2-b]pyridine, 98%

Chemical Name or Material: Furo[3,2-b]pyridine CAS: 272-62-8 Molecular Formula: C7H5NO Formula Weight: 119.12 MDL Number: MFCD11870744 Synonym: 4-Azabenzo[b]furan

Alfa Aesar™ 1,3-Bis(4-piperidinyl)propane, 97+%

Chemical Name or Material: 1,3-Bis(4-piperidinyl)propane CAS: 16898-52-5 Molecular Formula: C13H26N2 Formula Weight: 210.36 MDL Number: MFCD00038013 Beilstein: 111615 Synonym: 4,4'-(1,3-Propanediyl)bispiperidine; 4,4'-Trimethylenedipiperidine

Alfa Aesar™ Ethyl indole-2-carboxylate, 98+%

Chemical Name or Material: Ethyl indole-2-carboxylate CAS: 3770-50-1 Molecular Formula: C11H11NO2 Formula Weight: 189.21 MDL Number: MFCD00005609 Beilstein: 146395 Synonym: Indole-2-carboxylic acid ethyl ester

Alfa Aesar™ 2-Bromo-6-methoxypyridine, 97%

Chemical Name or Material: 2-Bromo-6-methoxypyridine CAS: 40473-07-2 Molecular Formula: C6H6BrNO Formula Weight: 188.02 MDL Number: MFCD00088345

Alfa Aesar™ (2-Oxo-1-pyrrolidinyl)acetic acid, 97%

Chemical Name or Material: (2-Oxo-1-pyrrolidinyl)acetic acid CAS: 53934-76-2 Formula Weight: 143.14 MDL Number: MFCD00962836 Beilstein: 4342 Synonym: (2-Oxopyrrolidin-1-yl)acetic acid

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