Heterocyclic Building Blocks

Alfa Aesar™ 3-Cyanopyridine-5-boronic acid pinacol ester, 96%

Chemical Name or Material: 3-Cyanopyridine-5-boronic acid pinacol ester CAS: 402718-29-0 Molecular Formula: C12H15BN2O2 Formula Weight: 230.07 MDL Number: MFCD07780755

5-Methylthiazole, 97%, ACROS Organics™

Chemical Name or Material: 5-Methylthiazole Assay: ≥96.0% Assay Percent Range: 97% Molecular Formula: C4H5NS Formula Weight: 99.16

Alfa Aesar™ 2-Pyrrolidinone, 99%

Chemical Name or Material: 2-Pyrrolidinone CAS: 616-45-5 Molecular Formula: C4H7NO Formula Weight: 85.11 MDL Number: MFCD00005270 Merck Index: 14,8016 Synonym: 2-Pyrrolidone; Butyrolactam

Alfa Aesar™ 5-Bromo-8-methoxyquinoline, 96%

Chemical Name or Material: 5-Bromo-8-methoxyquinoline CAS: 10522-47-1 Molecular Formula: C10H8BrNO Formula Weight: 238.08 MDL Number: MFCD04966996

5-Benzyloxytryptamine hydrochloride, 98%, ACROS Organics™

Chemical Name or Material: 5-Benzyloxytryptamine hydrochloride Name Note: 98% CAS: 52055-23-9 CAS Min %: 97.5 CAS Max %: 100.0 Assay: ≥97.5% Assay Percent Range: 98% Molecular Formula: C17H18N2O·HCl Formula Weight: 302.8 MDL Number: MFCD00012685

Alfa Aesar™ 5-Methoxy-2-methylbenzoselenazole, 97%

Chemical Name or Material: 5-Methoxy-2-methylbenzoselenazole CAS: 2946-17-0 Molecular Formula: C9H9NOSe Formula Weight: 226.14 MDL Number: MFCD00005558 UN Number: UN3440

Alfa Aesar™ 5-Amino-2,2-difluoro-1,3-benzodioxole, 97+%

Chemical Name or Material: 5-Amino-2,2-difluoro-1,3-benzodioxole CAS: 1544-85-0 Molecular Formula: C7H5F2NO2 Formula Weight: 173.12 MDL Number: MFCD00190144 UN Number: UN2810 Beilstein: 1343593 Synonym: 3,4-[(Difluoromethylene)dioxy]aniline

Alfa Aesar™ Ethyl nicotinate, 99%

Chemical Name or Material: Ethyl nicotinate CAS: 614-18-6 Molecular Formula: C8H9NO2 Formula Weight: 151.17 MDL Number: MFCD00006389 Beilstein: 122937 Synonym: Ethyl pyridine-3-carboxylate; Nicotinic acid ethyl ester

α,α-Diphenyl-4-piperidinomethanol, 98+%, ACROS Organics™

Chemical Name or Material: α, α-Diphenyl-4-piperidinomethanol Name Note: 98+% CAS: 115-46-8 CAS Min %: 98.0 CAS Max %: 100.0 Assay: 98.0 to 102.0% Total Base, ≥98.0% (HPLC) Assay Percent Range: 98+% Molecular Formula: C18H21NO Formula Weight: 267.37 MDL Number: MFCD00066980

Alfa Aesar™ 1-n-Butyl-3-methylimidazolium bromide, 99%

Chemical Name or Material: 1-n-Butyl-3-methylimidazolium bromide CAS: 85100-77-2 Molecular Formula: C8H15BrN2 Formula Weight: 219.12 MDL Number: MFCD03427611 Synonym: BMIMBr

Alfa Aesar™ 3-Chloro-4-(1-piperidinylcarbonyl)benzeneboronic acid, 98%

Chemical Name or Material: 3-Chloro-4-(1-piperidinylcarbonyl)benzeneboronic acid CAS: 850589-50-3 Molecular Formula: C12H15BClNO3 Formula Weight: 267.52 MDL Number: MFCD07363775 Synonym: 1-(4-Borono-2-chlorobenzoyl)piperidine

Alfa Aesar™ 5-Methyl-3-(4-methylphenyl)-1,2,4-oxadiazole, 97%

Chemical Name or Material: 5-Methyl-3-(4-methylphenyl)-1,2,4-oxadiazole CAS: 81386-30-3 Molecular Formula: C10H10N2O Formula Weight: 174.2 MDL Number: MFCD00085801 Beilstein: 7438 Synonym: 5-Methyl-3-(p-tolyl)-1,2,4-oxadiazole

Alfa Aesar™ 3-Iodo-2-isopropoxypyridine, 99%

Chemical Name or Material: 3-Iodo-2-isopropoxypyridine CAS: 766557-61-3 Molecular Formula: C8H10INO Formula Weight: 263.08 MDL Number: MFCD06659009

Alfa Aesar™ 5-Fluoroindole-2-carboxylic acid, 98+%

Chemical Name or Material: 5-Fluoroindole-2-carboxylic acid CAS: 399-76-8 Molecular Formula: C9H6FNO2 Formula Weight: 179.15 MDL Number: MFCD00005612 Beilstein: 153217 Synonym: 2-Carboxy-5-fluoroindole

Triphenyl(2-pyridylmethyl)phosphonium chloride hydrochloride, 98%, ACROS Organics™

Chemical Name or Material: Triphenyl(2-pyridylmethyl)phosphonium chloride hydrochloride Assay: 97.5 to 102.5% on dry basis (Argentometry) Assay Percent Range: 98% Molecular Formula: C24H21ClNP·ClH Formula Weight: 426.32

Alfa Aesar™ 3-Bromo-2-cyanopyridine, 98%

Chemical Name or Material: 3-Bromo-2-cyanopyridine CAS: 55758-02-6 Molecular Formula: C6H3BrN2 Formula Weight: 183.01 MDL Number: MFCD02683288 Synonym: 3-Bromopicolinonitrile; 3-Bromopyridine-2-carbonitrile

Alfa Aesar™ 3-(Dimethylaminomethyl)-5-nitroindole, 95%

Chemical Name or Material: 3-(Dimethylaminomethyl)-5-nitroindole CAS: 3414-64-0 Formula Weight: 219.24 MDL Number: MFCD00544197 Beilstein: 216692 Synonym: 5-Nitrogramine

Alfa Aesar™ 2-(Bromomethyl)benzothiazole, 98+%

Chemical Name or Material: 2-(Bromomethyl)benzothiazole CAS: 106086-78-6 Molecular Formula: C8H6BrNS Formula Weight: 228.11 MDL Number: MFCD00461195 UN Number: UN3261

Alfa Aesar™ 4-(Trifluoromethyl)indole, 97%

Chemical Name or Material: 4-(Trifluoromethyl)indole CAS: 128562-95-8 Formula Weight: 185.15 MDL Number: MFCD09954766 Beilstein: 18343909

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

Alfa Aesar™ 2-Chloro-4-methyl-3-nitropyridine, 97%

Chemical Name or Material: 2-Chloro-4-methyl-3-nitropyridine CAS: 23056-39-5 Molecular Formula: C6H5ClN2O2 Formula Weight: 172.57 MDL Number: MFCD00012347 UN Number: UN2811 Synonym: 2-Chloro-3-nitro-4-picoline

Alfa Aesar™ Indole-6-carbonitrile, 98+%

Chemical Name or Material: Indole-6-carbonitrile CAS: 15861-36-6 Molecular Formula: C9H6N2 Formula Weight: 142.16 MDL Number: MFCD00016732 Beilstein: 116502 Synonym: 6-Cyanoindole

Alfa Aesar™ 4-Methyl-2-(1-pyrrolyl)pyridine, 98%

Chemical Name or Material: 4-Methyl-2-(1-pyrrolyl)pyridine CAS: 90996-18-2 Molecular Formula: C10H10N2 Formula Weight: 158.2 MDL Number: MFCD02665532

6-Amino-2-methyl-2H-indazole, 97%, ACROS Organics™

Chemical Name or Material: 6-Amino-2-methyl-2H-indazole CAS: 50593-30-1 CAS Min %: 96.0 CAS Max %: 100.0 Assay: ≥96.0% Assay Percent Range: 97% Molecular Formula: C8H9N3 Formula Weight: 147.18 MDL Number: MFCD00464866

4-Fluoro-2-(1H-pyrazol-3-yl)phenol, 97%, ACROS Organics™

Chemical Name or Material: 4-Fluoro-2-(1H-pyrazol-3-yl)phenol CAS: 288401-64-9 CAS Min %: 96.0 CAS Max %: 100.0 Assay: ≥96.0% Assay Percent Range: 97% Molecular Formula: C9H7FN2O Formula Weight: 178.17 Synonym: 3-(5-Fluoro-2-hydroxyphenyl)pyrazole

Alfa Aesar™ N-(6-Bromohexyl)phthalimide, 97%

Chemical Name or Material: N-(6-Bromohexyl)phthalimide CAS: 24566-79-8 Molecular Formula: C14H16BrNO2 Formula Weight: 310.19 MDL Number: MFCD00023098 Beilstein: 186875 Synonym: 6-(N-Phthalimido)hexyl bromide

Alfa Aesar™ 3-Chloro-6-fluorobenzo[b]thiophene-2-carbonyl chloride, 98%

Chemical Name or Material: 3-Chloro-6-fluorobenzo[b]thiophene-2-carbonyl chloride CAS: 34576-83-5 Molecular Formula: C9H3Cl2FOS Formula Weight: 249.09 MDL Number: MFCD02090808 UN Number: UN3261

Piperazine-2-one, 95%, ACROS Organics™ Available on GSA/VA Contract for Federal Government customers only.

Chemical Name or Material: Piperazine-2-one CAS: 5625-67-2 Assay: ≥94% Assay Percent Range: 95% Molecular Formula: C4H8N2O Formula Weight: 100.12 MDL Number: MFCD01318687

3-methylthiophene-2-carbonyl Chloride, 98%, ACROS Organics™

Chemical Name or Material: 3-Methylthiophene-2-carbonyl chloride CAS: 61341-26-2 CAS Min %: 97.5 CAS Max %: 100.0 Assay: ≥97.5% (acid halide) Assay Percent Range: 98% Molecular Formula: C6H5ClOS Formula Weight: 160.62 MDL Number: MFCD00130091

Alfa Aesar™ 3,5-Dichloro-2-pyridone, 98+%

Chemical Name or Material: 3,5-Dichloro-2-pyridone CAS: 5437-33-2 Molecular Formula: C5H3Cl2NO Formula Weight: 163.99 MDL Number: MFCD00015401 Beilstein: 1524971 Synonym: 3,5-Dichloro-2-hydroxypyridine

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