Heterocyclic Building Blocks

Alfa Aesar™ 6,7-Dimethoxy-4(3H)-quinazolinone, 97%

Chemical Name or Material: 6,7-Dimethoxy-4(3H)-quinazolinone Molecular Formula: C10H10N2O3 Formula Weight: 206.2 MDL Number: MFCD01570147

Alfa Aesar™ 6-Chloro-7-methylchromone, 98%

Chemical Name or Material: 6-Chloro-7-methylchromone CAS: 67029-84-9 Molecular Formula: C10H7ClO2 Formula Weight: 194.62 MDL Number: MFCD00239401

Alfa Aesar™ Ethyl 2-amino-4-(4-cyanophenyl)thiophene-3-carboxylate, 97%

Chemical Name or Material: Ethyl 2-amino-4-(4-cyanophenyl)thiophene-3-carboxylate Molecular Formula: C14H12N2O2S Formula Weight: 272.32 MDL Number: MFCD22988975 UN Number: UN3439 Synonym: 2-Amino-4-(4-cyanophenyl)thiophene-3-carboxylic acid ethyl ester

Alfa Aesar™ 5-Benzyloxyindole, 94%, may contain up to ca 7% toluene

Chemical Name or Material: 5-Benzyloxyindole CAS: 1215-59-4 Molecular Formula: C15H13NO Formula Weight: 223.28 MDL Number: MFCD00005676 Beilstein: 173532

Alfa Aesar™ 1,4-Bis(4-pyridylmethyl)benzene, 97%

Chemical Name or Material: 1,4-Bis(4-pyridylmethyl)benzene CAS: 52469-20-2 Formula Weight: 260.34 MDL Number: MFCD23379844

Alfa Aesar™ 4,5-Dicyano-2-phenylimidazole, 97%

Chemical Name or Material: 4,5-Dicyano-2-phenylimidazole CAS: 50847-06-8 Molecular Formula: C11H6N4 Formula Weight: 194.19 MDL Number: MFCD05863325 UN Number: UN3439

Alfa Aesar™ 2-Bromo-4-phenylthiazole, 97%

Chemical Name or Material: 2-Bromo-4-phenylthiazole CAS: 57516-16-2 Molecular Formula: C9H6BrNS Formula Weight: 240.12 MDL Number: MFCD09746507

Alfa Aesar™ Indole-5-boronic acid, 95%

Chemical Name or Material: Indole-5-boronic acid CAS: 144104-59-6 Molecular Formula: C8H8BNO2 Formula Weight: 160.97 MDL Number: MFCD01319013 Synonym: 5-Boronoindole

Alfa Aesar™ Ethyl 4-(maleimidomethyl)-2-(2-pyridyl)thiazole-5-carboxylate, 97%

Chemical Name or Material: Ethyl 4-(maleimidomethyl)-2-(2-pyridyl)thiazole-5-carboxylate Molecular Formula: C16H13N3O4S Formula Weight: 343.36 MDL Number: MFCD22988977 Synonym: 4-(N-Maleimidomethyl)-2-(2-pyridyl)thiazole-5-carboxylic acid ethyl ester

Alfa Aesar™ (S)-(-)-Indoline-2-carboxylic acid, 97+%

Chemical Name or Material: (S)-(-)-Indoline-2-carboxylic acid CAS: 79815-20-6 Molecular Formula: C9H9NO2 Formula Weight: 163.18 MDL Number: MFCD00070578

Alfa Aesar™ 5-Amino-2-mercaptobenzimidazole, 96%

Chemical Name or Material: 5-Amino-2-mercaptobenzimidazole CAS: 2818-66-8 Molecular Formula: C7H7N3S Formula Weight: 165.22 MDL Number: MFCD00022671 Synonym: 5-Amino-1,3-dihydro-2H-benzimidazole-2-thione

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

Alfa Aesar™ 2-(Methylthio)thiazole, 98%

Chemical Name or Material: 2-(Methylthio)thiazole CAS: 5053-24-7 Molecular Formula: C4H5NS2 Formula Weight: 131.21 MDL Number: MFCD00858981 Synonym: 2-(Methylmercapto)thiazole

Alfa Aesar™ 2,5-Dimethyl-1-(4-nitrophenyl)pyrrole, 97%

Chemical Name or Material: 2,5-Dimethyl-1-(4-nitrophenyl)pyrrole CAS: 5044-22-4 Molecular Formula: C12H12N2O2 Formula Weight: 216.24 MDL Number: MFCD00085038

Alfa Aesar™ 4-Methyl-1,2,3-thiadiazole-5-methanol, 99%

Chemical Name or Material: 4-Methyl-1,2,3-thiadiazole-5-methanol CAS: 163008-86-4 Molecular Formula: C4H6N2OS Formula Weight: 130.17 MDL Number: MFCD07371384 Synonym: 5-Hydroxymethyl-4-methyl-1,2,3-thiadiazole

2-chloro-8-methylquinoline-3-carboxaldehyde, 98%, ACROS Organics™

Chemical Name or Material: 2-chloro-8-methylquinoline-3-carboxaldehyde CAS: 73568-26-0 CAS Min %: 97.5 CAS Max %: 100.0 Assay: ≥97.5% Assay Percent Range: 98% Molecular Formula: C11H8ClNO Formula Weight: 205.64 MDL Number: MFCD02227041

Alfa Aesar™ 3-Amino-4-methoxy-1H-indazole, 97%

Chemical Name or Material: 3-Amino-4-methoxy-1H-indazole CAS: 886362-07-8 Molecular Formula: C8H9N3O Formula Weight: 163.18 MDL Number: MFCD08276946

Alfa Aesar™ 5-(5-Methyl-2-furyl)thieno[2,3-d]pyrimidin-4(3H)-one, 97%

Chemical Name or Material: 5-(5-Methyl-2-furyl)thieno[2,3-d]pyrimidin-4(3H)-one Molecular Formula: C11H8N2O2S Formula Weight: 232.25 MDL Number: MFCD22988976

Alfa Aesar™ 4-(6-Methyl-2-benzimidazolyl)benzamidoxime, 97%

Chemical Name or Material: 4-(6-Methyl-2-benzimidazolyl)benzamidoxime Molecular Formula: C15H14N4O Formula Weight: 266.3 MDL Number: MFCD16658868

Alfa Aesar™ 2-n-Hexylfuran, 97%

Chemical Name or Material: 2-n-Hexylfuran CAS: 3777-70-6 Molecular Formula: C10H16O Formula Weight: 152.24 MDL Number: MFCD00053134 UN Number: UN1993

Alfa Aesar™ Methyl 4-(5-formyl-2-thienyl)benzoate, 95%

Chemical Name or Material: Methyl 4-(5-formyl-2-thienyl)benzoate Molecular Formula: C13H10O3S Formula Weight: 246.29 MDL Number: MFCD06200909 Synonym: 4-(5-Formyl-2-thienyl)benzoic acid methyl ester

Alfa Aesar™ alpha,alpha,alpha-Tribromoquinaldine, 97%

Chemical Name or Material: alpha,alpha,alpha-Tribromoquinaldine CAS: 613-53-6 Molecular Formula: C10H6Br3N Formula Weight: 379.89 MDL Number: MFCD00006755 Beilstein: 147638 Synonym: 2-(Tribromomethyl)quinoline

Alfa Aesar™ Ethyl 4-isopropylpiperazine-1-carboxylate, 98%

Chemical Name or Material: Ethyl 4-isopropylpiperazine-1-carboxylate CAS: 61014-91-3 Molecular Formula: C10H20N2O2 Formula Weight: 200.28 MDL Number: MFCD08064222 Synonym: Ethyl 4-(1-methylethyl)piperazine-1-carboxylate; 4-Isopropylpiperazine-1-carboxylic acid ethyl ester

2-Methylquinoxaline 97%, ACROS Organics™

Chemical Name or Material: 2-Methylquinoxaline Name Note: 97% CAS: 7251-61-8 CAS Min %: 96.0 CAS Max %: 100.0 Assay: ≥96.0% Assay Percent Range: 97% Molecular Formula: C9H8N2 Formula Weight: 144.18 MDL Number: MFCD00006727

Alfa Aesar™ 7-Nitroindole-2-carboxylic acid, 96%

Chemical Name or Material: 7-Nitroindole-2-carboxylic acid CAS: 6960-45-8 Molecular Formula: C9H6N2O4 Formula Weight: 206.16 MDL Number: MFCD00044720

Alfa Aesar™ 4-Vinyl-1,3-dioxolan-2-one, 99%

Chemical Name or Material: 4-Vinyl-1,3-dioxolan-2-one CAS: 4427-96-7 Molecular Formula: C5H6O3 Formula Weight: 114.1 MDL Number: MFCD00143315 UN Number: UN2810 Synonym: Vinyl ethylene carbonate; VEC

Alfa Aesar™ 2-Chlorobenzoxazole, 99%

Chemical Name or Material: 2-Chlorobenzoxazole CAS: 615-18-9 Molecular Formula: C7H4ClNO Formula Weight: 153.57 MDL Number: MFCD00005766 Beilstein: 115982

Alfa Aesar™ 5-(5-Methyl-2-thienyl)thieno[2,3-d]pyrimidin-4-one, 97%

Chemical Name or Material: 5-(5-Methyl-2-thienyl)thieno[2,3-d]pyrimidin-4-one Molecular Formula: C11H8N2OS2 Formula Weight: 248.31 MDL Number: MFCD06671220

Alfa Aesar™ Nalpha,Nepsilon-Di-Boc-L-lysine N-succinimidyl ester, 97%

Chemical Name or Material: Nalpha,Nepsilon-Di-Boc-L-lysine N-succinimidyl ester CAS: 30189-36-7 Formula Weight: 443.49 MDL Number: MFCD00057898 Beilstein: 1559007 Synonym: Boc-Lys(Boc)-OSu; Nα,Nε-Di-Boc-L-lysine N-hydroxysuccinimide ester

N-2-Acetylguanine, 99%, ACROS Organics™

Chemical Name or Material: N-2-Acetylguanine CAS: 19962-37-9 CAS Min %: 98.5 CAS Max %: 100.0 Assay: ≥98.5% Assay Percent Range: 99% Molecular Formula: C7H7N5O2 Formula Weight: 193.17 MDL Number: MFCD00078201

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