Heterocyclic Building Blocks

Alfa Aesar™ 4-(2-Chloroethyl)morpholine hydrochloride, 99%

Chemical Name or Material: 4-(2-Chloroethyl)morpholine hydrochloride CAS: 3647-69-6 Molecular Formula: C6H12ClNO·HCl Formula Weight: 186.08 MDL Number: MFCD00012797 UN Number: UN2923 Beilstein: 3684083 Synonym: 2-(4-Morpholinyl)ethyl chloride hydrochloride

Alfa Aesar™ 2-Amino-4-imino-2-thiazoline hydrochloride, 99%

Chemical Name or Material: 2-Amino-4-imino-2-thiazoline hydrochloride CAS: 36518-76-0 Molecular Formula: C3H5N3S·HCl Formula Weight: 151.62 MDL Number: MFCD00012721 Beilstein: 5109728

Alfa Aesar™ Benzo[b]thiophene-3-acetic acid, 98+%

Chemical Name or Material: Benzo[b]thiophene-3-acetic acid CAS: 1131-09-5 Molecular Formula: C10H8O2S Formula Weight: 192.24 MDL Number: MFCD00051637 Beilstein: 143357 Synonym: Thianaphthene-3-acetic acid

Alfa Aesar™ 1-Phenyl-2-pyrrolidinone, 99%

Chemical Name or Material: 1-Phenyl-2-pyrrolidinone CAS: 4641-57-0 Molecular Formula: C10H11NO Formula Weight: 161.2 MDL Number: MFCD00003192 Beilstein: 130685 Synonym: N-Phenylbutyrolactam; N-Phenyl-2-pyrrolidone

Isonipecotamide, 98%, ACROS Organics™

Chemical Name or Material: Isonipecotamide CAS: 39546-32-2 Assay: ≥97.5% (on dry substance) Assay Percent Range: 98% Molecular Formula: C6H12N2O Formula Weight: 128.17 MDL Number: MFCD00038012 Synonym: Hexahydroisonicotinamide

Alfa Aesar™ 3-(4-Morpholinylcarbonyl)benzeneboronic acid pinacol ester

Chemical Name or Material: 3-(4-Morpholinylcarbonyl)benzeneboronic acid pinacol ester CAS: 1036991-25-9 Molecular Formula: C17H24BNO4 Formula Weight: 317.19 MDL Number: MFCD09266172 Synonym: 4-[4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)benzoyl]morpholine

Alfa Aesar™ 4-Chloromethyl-2-methylthiazole hydrochloride, 98%

Chemical Name or Material: 4-Chloromethyl-2-methylthiazole hydrochloride CAS: 77470-53-2 Molecular Formula: C5H6ClNS·HCl Formula Weight: 184.09 MDL Number: MFCD00067725 UN Number: UN3261 Beilstein: 108603

Diphenyl-2-pyridylphosphine, 97%, ACROS Organics™

Chemical Name or Material: Diphenyl-2-pyridylphosphine Assay Percent Range: 97% Molecular Formula: C17H14NP Formula Weight: 263.28 MDL Number: MFCD00192108

Isonipecotic Acid, 99%, ACROS Organics™

Chemical Name or Material: Isonipecotic acid CAS: 498-94-2 Assay: ≥98.5% (on dry substance) Assay Percent Range: 99% Molecular Formula: C6H11NO2 Formula Weight: 129.16 MDL Number: MFCD00006004 Synonym: 4-Piperidinecarboxylic acid

Alfa Aesar™ 2-Hydroxy-6-methylpyridine, 98%

Chemical Name or Material: 2-Hydroxy-6-methylpyridine CAS: 3279-76-3 Molecular Formula: C6H7NO Formula Weight: 109.13 MDL Number: MFCD00006279 Beilstein: 107073 Synonym: 6-Hydroxy-2-picoline; 6-Methyl-2-pyridinol

Alfa Aesar™ 4-Amino-5-bromo-2-hydroxypyrimidine, 98%

Chemical Name or Material: 4-Amino-5-bromo-2-hydroxypyrimidine CAS: 2240-25-7 Formula Weight: 190 MDL Number: MFCD00056025 Beilstein: 127286 Synonym: 5-Bromocytosine; 4-amino-5-bromopyrimidin-2(1H)-one

Alfa Aesar™ 3-Chlorobenzo[b]thiophene-2-carboxylic acid, 97%

Chemical Name or Material: 3-Chlorobenzo[b]thiophene-2-carboxylic acid CAS: 21211-22-3 Molecular Formula: C9H5ClO2S Formula Weight: 212.65 MDL Number: MFCD00014579 Beilstein: 1425602

Alfa Aesar™ 2-Amino-5-methylpyridine-3-carboxaldehyde, 95%

Chemical Name or Material: 2-Amino-5-methylpyridine-3-carboxaldehyde CAS: 1023814-35-8 Formula Weight: 136.15 MDL Number: MFCD09754122 Beilstein: 23782189 Synonym: 2-Amino-5-methylnicotinaldehyde

Alfa Aesar™ 1,4-Benzodioxane-2-carboxylic acid, 97%

Chemical Name or Material: 1,4-Benzodioxane-2-carboxylic acid CAS: 3663-80-7 Molecular Formula: C9H8O4 Formula Weight: 180.16 MDL Number: MFCD00084888

Ethyl morpholinoacetate, 98%, ACROS Organics™

Chemical Name or Material: Ethyl morpholinoacetate Name Note: 98% CAS: 3235-82-3 Assay: ≥97.5% Assay Percent Range: 98% Molecular Formula: C8H15NO3 Formula Weight: 173.21 MDL Number: MFCD00023375

Alfa Aesar™ 3-Chlorobenzo[b]thiophene-2-carboxamide, 98%

Chemical Name or Material: 3-Chlorobenzo[b]thiophene-2-carboxamide CAS: 21211-09-6 Molecular Formula: C9H6ClNOS Formula Weight: 211.67 MDL Number: MFCD00067793 Beilstein: 1425601

Alfa Aesar™ 2-Chloro-4-iodopyridine-3-carboxaldehyde, 98%

Chemical Name or Material: 2-Chloro-4-iodopyridine-3-carboxaldehyde CAS: 153034-90-3 Molecular Formula: C6H3ClINO Formula Weight: 267.45 MDL Number: MFCD03095294 Synonym: 2-Chloro-4-iodonicotinaldehyde

Alfa Aesar™ 4-Amino-2,6-dimethylpyridine, 98%

Chemical Name or Material: 4-Amino-2,6-dimethylpyridine CAS: 3512-80-9 Formula Weight: 122.17 MDL Number: MFCD00130078 UN Number: UN2811

Alfa Aesar™ 2-Bromo-3-fluoro-5-methylpyridine, 98%

Chemical Name or Material: 2-Bromo-3-fluoro-5-methylpyridine CAS: 34552-16-4 Formula Weight: 190.01 MDL Number: MFCD09909840 Beilstein: 386414

Alfa Aesar™ 2-Bromo-5-cyanopyridine, 97%

Chemical Name or Material: 2-Bromo-5-cyanopyridine CAS: 139585-70-9 Formula Weight: 183.01 MDL Number: MFCD00234141 UN Number: UN3439 Beilstein: 8760368 Synonym: 6-Bromonicotinonitrile

Alfa Aesar™ Indole-6-carboxylic acid, 98%

Chemical Name or Material: Indole-6-carboxylic acid CAS: 1670-82-2 Molecular Formula: C9H7NO2 Formula Weight: 161.16 MDL Number: MFCD00210441 Beilstein: 123991

Alfa Aesar™ 5-Bromoindole, 99%

Chemical Name or Material: 5-Bromoindole CAS: 10075-50-0 Molecular Formula: C8H6BrN Formula Weight: 196.05 MDL Number: MFCD00005670 Beilstein: 112877

Alfa Aesar™ 4'-(1-Imidazolyl)acetophenone, 97%

Chemical Name or Material: 4'-(1-Imidazolyl)acetophenone CAS: 10041-06-2 Molecular Formula: C11H10N2O Formula Weight: 186.21 MDL Number: MFCD00005282 Beilstein: 608955

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

Chemical Name or Material: 2-Amino-5-cyclopropyl-1,3,4-thiadiazole CAS: 57235-50-4 Molecular Formula: C5H7N3S Formula Weight: 141.2 MDL Number: MFCD00051649 Beilstein: 124356

Alfa Aesar™ 1-Boc-4-(2-Fluoro-4-nitrophenyl)piperazine, 97%

Chemical Name or Material: 1-Boc-4-(2-Fluoro-4-nitrophenyl)piperazine CAS: 154590-34-8 Formula Weight: 325.34 MDL Number: MFCD08443959 Synonym: tert-Butyl 4-(2-Fluoro-4-nitrophenyl)piperazine-1-carboxylate; 4-(2-Fluoro-4-nitrophenyl)piperazine-1-carboxylic acid tert-butyl ester

Alfa Aesar™ 5-Ethyl-2-furaldehyde, 98%

Chemical Name or Material: 5-Ethyl-2-furaldehyde CAS: 23074-10-4 Molecular Formula: C7H8O2 Formula Weight: 124.14 MDL Number: MFCD00030605 Beilstein: 1982 Synonym: 5-Ethylfurfural

Alfa Aesar™ D-Pipecolinic acid, 97%

Chemical Name or Material: D-Pipecolinic acid CAS: 1723-00-8 Formula Weight: 129.16 MDL Number: MFCD00064346 Beilstein: 81094 Synonym: D-Homoproline

Alfa Aesar™ 1-Allylpiperazine, 98+%

Chemical Name or Material: 1-Allylpiperazine CAS: 13961-36-9 Molecular Formula: C7H14N2 Formula Weight: 126.2 MDL Number: MFCD00167970 UN Number: UN2920 Beilstein: 507447

Alfa Aesar™ 5-Chloroindole, 98%

Chemical Name or Material: 5-Chloroindole CAS: 17422-32-1 Molecular Formula: C8H6ClN Formula Weight: 151.6 MDL Number: MFCD00005672 Beilstein: 2651

Alfa Aesar™ (R)-(-)-3-Fluoropyrrolidine hydrochloride, 97%

Chemical Name or Material: (R)-(-)-3-Fluoropyrrolidine hydrochloride CAS: 136725-55-8 Molecular Formula: C4H8FN·HCl Formula Weight: 125.57 MDL Number: MFCD04038717

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