Heterocyclic Building Blocks

4-Piperazinoacetophenone 94%, ACROS Organics™

Chemical Name or Material: 4-Piperazinoacetophenone Name Note: 94% CAS: 51639-48-6 CAS Min %: 92.0 CAS Max %: 100.0 Assay: ≥92% Assay Percent Range: 94% Molecular Formula: C12H16N2O Formula Weight: 204.27 MDL Number: MFCD00005962 5GR 4-Piperazinoacetophenone, 94%

Epichlorohydrin, 99%, ACROS Organics™

Chemical Name or Material: Epichlorohydrin Assay: ≥98.5% Assay Percent Range: 99% Molecular Formula: C3H5ClO Formula Weight: 92.52 Synonym: 1-Chloro-2, 3-epoxypropane 1LT Epichlorohydrin, 99%

Alfa Aesar™ 2-Acetyl-7-methoxybenzo[b]furan, 97%

Chemical Name or Material: 2-Acetyl-7-methoxybenzo[b]furan CAS: 43071-52-9 Molecular Formula: C11H10O3 Formula Weight: 190.2 MDL Number: MFCD00016911 2-ACETYL-7-METHOXYBENZOFURAN, 97%,5G

(R)-(-)-5-Hydroxymethyl-2-pyrrolidinone, 98%, ACROS Organics™

Chemical Name or Material: (R)-(-)-5-Hydroxymethyl-2-pyrrolidinone Name Note: 98% CAS: 66673-40-3 CAS Min %: 97.5 CAS Max %: 100.0 Assay: ≥97.5% Assay Percent Range: 98% Molecular Formula: C5H9NO2 Formula Weight: 115.13 MDL Number: MFCD00077791 1GR (R)-(-)-5-Hydroxymethyl-2-pyrrolidinone, 98%

Alfa Aesar™ 6-Methoxyquinoxaline, 98%

Chemical Name or Material: 6-Methoxyquinoxaline CAS: 6639-82-3 Formula Weight: 160.17 MDL Number: MFCD00666601 1GR 6-Methoxyquinoxaline, 98%

Alfa Aesar™ 2-Methylindole, 98+%

Chemical Name or Material: 2-Methylindole CAS: 95-20-5 Molecular Formula: C9H9N Formula Weight: 131.18 MDL Number: MFCD00005616 Beilstein: 109781 2-METHYLINDOLE, 98+% 1000G

L(-)-Thiazolidine-4-carboxylic Acid 98%, ACROS Organics™

Chemical Name or Material: L(-)-Thiazolidine-4-carboxylic acid Name Note: 98% CAS: 34592-47-7 Assay: ≥97.5% (Acid) Assay Percent Range: 98% Molecular Formula: C4H7NO2S Formula Weight: 133.16 MDL Number: MFCD00005212 Synonym: Thioproline 100GR L(-)-Thiazolidine-4-carboxylic acid, 98%

5-Methyl-4-nitroimidazole, 98%, ACROS Organics™

Chemical Name or Material: 4-Methyl-5-nitroimidazole CAS: 14003-66-8 CAS Min %: 97.5 CAS Max %: 100.0 Assay: ≥97.5% Assay Percent Range: 98% Molecular Formula: C4H5N3O2 Formula Weight: 127.1 5GR 4-Methyl-5-nitroimidazole, 98%

2,5-Dimethylfuran, 99%, ACROS Organics™

Chemical Name or Material: 2, 5-Dimethylfuran Name Note: 99% CAS: 625-86-5 CAS Min %: 98.5 CAS Max %: 100.0 Assay: ≥98.5% Assay Percent Range: 99% Molecular Formula: C6H8O Formula Weight: 96.13 MDL Number: MFCD00003250 500ML 2,5-Dimethylfuran, 99%

Alfa Aesar™ 2-Cyano-5-fluoropyridine, 98+%

Chemical Name or Material: 2-Cyano-5-fluoropyridine CAS: 327056-62-2 Molecular Formula: C6H3FN2 Formula Weight: 122.1 MDL Number: MFCD08741371 Synonym: 5-Fluoropicolinonitrile; 5-Fluoropyridine-2-carbonitrile 2-CYANO-5-FLUOROPYRIDINE, 98+% 1G

Alfa Aesar™ 4-Amino-6-chloro-2-(methylthio)pyrimidine, 98%

Chemical Name or Material: 4-Amino-6-chloro-2-(methylthio)pyrimidine CAS: 1005-38-5 Molecular Formula: C5H6ClN3S Formula Weight: 175.64 MDL Number: MFCD00006088 25GR 4-Amino-6-chloro-2-(methylthio)pyrimidine, 98% 25g

Alfa Aesar™ Potassium 2-methoxypyridine-5-trifluoroborate, 97%

Chemical Name or Material: Potassium 2-methoxypyridine-5-trifluoroborate CAS: 1144573-61-4 Molecular Formula: C6H6BF3KNO Formula Weight: 215.02 MDL Number: MFCD09993111 1GR Potassium 2-methoxypyridine-5-trifluoroborate, 97% 1g

Alfa Aesar™ alpha-(4-tert-Butylphenyl)di(2-pyrrolyl)methane, 99%

Chemical Name or Material: alpha-(4-tert-Butylphenyl)di(2-pyrrolyl)methane CAS: 167482-98-6 Molecular Formula: C19H22N2 Formula Weight: 278.39 MDL Number: MFCD03454220 Synonym: 2,2'-(4-tert-Butylphenyl)methylenebispyrrole; 5-(4-tert-Butylphenyl)dipyrromethane 5GR ^a-(4-tert-Butylphenyl)di(2-pyrrolyl)methane,99% 5g

HEPES, 99%, for biochemistry, ACROS Organics™

Chemical Name or Material: HEPES CAS: 7365-45-9 Purity Grade: For biochemistry Assay: ≥98.5% (on dried substance) (Acid) Assay Percent Range: 99% Molecular Formula: C8H18N2O4S Formula Weight: 238.3 25GR HEPES, 99%, for biochemistry

Alfa Aesar™ 2-Amino-5-ethylthio-1,3,4-thiadiazole, 96%

Chemical Name or Material: 2-Amino-5-ethylthio-1,3,4-thiadiazole CAS: 25660-70-2 Molecular Formula: C4H7N3S2 Formula Weight: 161.25 MDL Number: MFCD00040401 Synonym: 5-(Ethylthio)-1,3,4-thiadiazole-2-amine 2-AMINO-5-(ETHYLTHIO)-1,3,4-THIADIAZOLE, 99%,5G

Alfa Aesar™ 2-(Boc-amino)-4-methylpyridine, 97%

Chemical Name or Material: 2-(Boc-amino)-4-methylpyridine CAS: 90101-20-5 Molecular Formula: C11H16N2O2 Formula Weight: 208.26 MDL Number: MFCD07776933 Synonym: tert-Butyl (4-methylpyridin-2-yl)carbamate 1GR 2-(Boc-amino)-4-methylpyridine, 97%

Pyridine hydrochloride, 98%, pure, ACROS Organics™

Chemical Name or Material: Pyridine hydrochloride CAS: 628-13-7 Purity Grade: Pure Assay: ≥97.5% (Argentometry) Assay Percent Range: 98% Molecular Formula: C5H5N·ClH Formula Weight: 115.56 Synonym: Pyridinium chloride 2.5KG Pyridine hydrochloride, 98%, pure

Alfa Aesar™ 2-(2-Naphthyl)-4-(5,6,7,8-tetrahydro-2-naphthyl)thiazole, 97%

Chemical Name or Material: 2-(2-Naphthyl)-4-(5,6,7,8-tetrahydro-2-naphthyl)thiazole Molecular Formula: C23H19NS Formula Weight: 341.47 MDL Number: MFCD22682973 2GR 2-(2-Naphthyl)-4-(5,6,7,8-tetrahydro-2-naphthyl)thiazole, 97% 2g

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%

Alfa Aesar™ 6-Aminobenzothiazole, 98+%

Chemical Name or Material: 6-Aminobenzothiazole CAS: 533-30-2 Molecular Formula: C7H6N2S Formula Weight: 150.2 MDL Number: MFCD00015461 Beilstein: 116381 Merck Index: 14,425 6-AMINOBENZOTHIAZOLE, 98+%1G

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,25G

(S)-(+)-Nipecotic acid, 96%, ACROS Organics™

Chemical Name or Material: (S)-(+)-Nipecotic acid Assay: 95.0 to 105.0% Assay Percent Range: 96% Molecular Formula: C6H11NO2 Formula Weight: 129.16 Synonym: (S)-(+)-3-Piperidinecarboxylic acid 1GR (S)-(+)-Nipecotic acid, 96%

Alfa Aesar™ 4-(3-Pyrrolidinyl)morpholine, 97%

Chemical Name or Material: 4-(3-Pyrrolidinyl)morpholine CAS: 53617-37-1 Molecular Formula: C8H16N2O Formula Weight: 156.23 MDL Number: MFCD06740352 UN Number: UN2735 Synonym: 3-(4-Morpholinyl)pyrrolidine; 4-(3-Pyrrolidino)morpholine 4-PYRROLIDIN-3-YLMORPHOLINE250MG

Alfa Aesar™ Methyl 4-(3-ethyl-1,2,4-oxadiazol-5-yl)benzoate, 97%

Chemical Name or Material: Methyl 4-(3-ethyl-1,2,4-oxadiazol-5-yl)benzoate Molecular Formula: C12H12N2O3 Formula Weight: 232.24 MDL Number: MFCD18384922 Synonym: 4-(3-Ethyl-1,2,4-oxadiazol-5-yl)benzoic acid methyl ester 1GR Methyl 4-(3-ethyl-1,2,4-oxadiazol-5-yl)benzoate, 97% 1g

Alfa Aesar™ 2H-1,4-Benzoxazin-3(4H)-one, 99%

Chemical Name or Material: 2H-1,4-Benzoxazin-3(4H)-one CAS: 5466-88-6 Molecular Formula: C8H7NO2 Formula Weight: 149.15 MDL Number: MFCD00158536 2H-1,4-BENZOXAZIN-3(4H)-O NE, 99% 25G

Alfa Aesar™ 1-(3-Chlorobenzoyl)-4-methylpiperidine, 97%

Chemical Name or Material: 1-(3-Chlorobenzoyl)-4-methylpiperidine CAS: 197502-56-0 Molecular Formula: C13H16ClNO Formula Weight: 237.73 MDL Number: MFCD00095780 1GR 1-(3-Chlorobenzoyl)-4-methylpiperidine, 97% 1

Alfa Aesar™ 3-Hydroxyisoquinoline, 99%

Chemical Name or Material: 3-Hydroxyisoquinoline CAS: 7651-81-2 Molecular Formula: C9H7NO Formula Weight: 145.16 MDL Number: MFCD00075524 Beilstein: 113230 Synonym: 3-Isoquinolinol 3-HYDROXYISOQUINOLINE, 99%5G

Alfa Aesar™ Ethyl 4-chloro-6-methoxyquinoline-3-carboxylate, 97%

Chemical Name or Material: Ethyl 4-chloro-6-methoxyquinoline-3-carboxylate CAS: 22931-71-1 Molecular Formula: C13H12ClNO3 Formula Weight: 265.7 MDL Number: MFCD00173417 Synonym: 4-Chloro-6-methoxyquinoline-3-carboxylic acid ethyl ester ETHYL 4-CHLORO-6-METHOXYQUINOLINE-3-CARBOXYLATE1G

2-Acetyl-7-methoxybenzofuran, 98%, Acros Organics

1GR 2-Acetyl-7-methoxybenzofuran, 98%

Alfa Aesar™ 4-(4-Acetamidophenyl)-2-aminothiazole, 97%

Chemical Name or Material: 4-(4-Acetamidophenyl)-2-aminothiazole CAS: 21674-96-4 Molecular Formula: C11H11N3OS Formula Weight: 233.29 MDL Number: MFCD00207103 Synonym: 4-(4-Acetamidophenyl)-2-thiazolamine 4-(4-ACETAMIDOPHENYL)-2-A MINOTHIAZOLE, 97% 5G

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