Heterocyclic Building Blocks

Alfa Aesar™ 5-Chloro-1-methyl-4-nitroimidazole, 95%

Chemical Name or Material: 5-Chloro-1-methyl-4-nitroimidazole CAS: 4897-25-0 Formula Weight: 161.55 MDL Number: MFCD00233664

Alfa Aesar™ DL-Lactide, 99%

Chemical Name or Material: DL-Lactide CAS: 95-96-5 Molecular Formula: C6H8O4 Formula Weight: 144.13 MDL Number: MFCD00011685 Beilstein: 82121 Synonym: (+/-)-3,6-Dimethyl-1,4-dioxane-2,5-dione

Alfa Aesar™ N-Aminophthalimide, 94%

Chemical Name or Material: N-Aminophthalimide CAS: 1875-48-5 Molecular Formula: C8H6N2O2 Formula Weight: 162.15 MDL Number: MFCD00005895 Beilstein: 383756

Alfa Aesar™ 4-Chloro-6-(trifluoromethyl)pyrimidine, 95%

Chemical Name or Material: 4-Chloro-6-(trifluoromethyl)pyrimidine CAS: 37552-81-1 Formula Weight: 182.53 MDL Number: MFCD04972771

Alfa Aesar™ 3-[2-(Boc-amino)ethyl]azetidine, 95%

Chemical Name or Material: 3-[2-(Boc-amino)ethyl]azetidine CAS: 162696-31-3 Formula Weight: 200.28 MDL Number: MFCD09878605 Synonym: tert-Butyl [2-(3-azetidinyl)ethyl]carbamate

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™ 2-(Boc-amino)-5-bromothiazole, 97%

Chemical Name or Material: 2-(Boc-amino)-5-bromothiazole CAS: 405939-39-1 Formula Weight: 279.15 MDL Number: MFCD07368614

Alfa Aesar™ 1-Aminopiperidine, 97%

Chemical Name or Material: 1-Aminopiperidine CAS: 2213-43-6 Molecular Formula: C5H12N2 Formula Weight: 100.16 MDL Number: MFCD00006489 UN Number: UN2733 Beilstein: 383565 Synonym: 1-Piperidinamine

Alfa Aesar™ 2-Bromo-5-fluoro-3-nitropyridine, 95%

Chemical Name or Material: 2-Bromo-5-fluoro-3-nitropyridine CAS: 652160-72-0 Formula Weight: 220.99 MDL Number: MFCD05662387 Beilstein: 14253146

Alfa Aesar™ (S)-(-)-Azetidine-2-carboxylic acid, 99%

Chemical Name or Material: (S)-(-)-Azetidine-2-carboxylic acid CAS: 2133-34-8 Molecular Formula: C4H7NO2 Formula Weight: 101.11 MDL Number: MFCD00005166 Beilstein: 80678 Merck Index: 14,908 Synonym: H-Aze-OH

Alfa Aesar™ 2-(4-Chlorophenyl)pyrrolidine, 95%

Chemical Name or Material: 2-(4-Chlorophenyl)pyrrolidine CAS: 38944-14-8 Formula Weight: 181.66 MDL Number: MFCD01631838

Alfa Aesar™ 5-Chloroindole-3-carboxaldehyde, 98%

Chemical Name or Material: 5-Chloroindole-3-carboxaldehyde CAS: 827-01-0 Molecular Formula: C9H6ClNO Formula Weight: 179.61 MDL Number: MFCD00175291 Beilstein: 123794 Synonym: 5-Chloro-3-formylindole

Alfa Aesar™ 1-Benzyloxycarbonyl-3-piperidone, ≥97%

Chemical Name or Material: 1-Benzyloxycarbonyl-3-piperidone CAS: 61995-20-8 Formula Weight: 233.27 MDL Number: MFCD03001723 Beilstein: 1464624 Synonym: Benzyl 3-oxopiperidine-1-carboxylate; 1-N-Cbz-3-piperidone

Alfa Aesar™ L-Lactide, 98+%

Chemical Name or Material: L-Lactide CAS: 4511-42-6 Molecular Formula: C6H8O4 Formula Weight: 144.13 MDL Number: MFCD00070594 Beilstein: 82124 Synonym: (S,S)-3,6-Dimethyl-1,4-dioxane-2,5-dione

Alfa Aesar™ 4-Chloro-2,6-dimethyl-3-nitropyridine, 98%

Chemical Name or Material: 4-Chloro-2,6-dimethyl-3-nitropyridine CAS: 15513-48-1 Formula Weight: 186.6 MDL Number: MFCD08543468 Beilstein: 1569403

Alfa Aesar™ 6-Bromoindole-2-carboxylic acid, 97%

Chemical Name or Material: 6-Bromoindole-2-carboxylic acid CAS: 16732-65-3 Formula Weight: 240.05 MDL Number: MFCD02664469

Alfa Aesar™ 3-Bromo-4-methylpyridine, 98%

Chemical Name or Material: 3-Bromo-4-methylpyridine CAS: 3430-22-6 Molecular Formula: C6H6BrN Formula Weight: 172.03 MDL Number: MFCD00082592 Beilstein: 878354 Synonym: 3-Bromo-4-picoline

4-Hydroxyquinoline-2-carboxylic Acid, Hydrate 98%, ACROS Organics™

Chemical Name or Material: 4-Hydroxyquinoline-2-carboxylic acid, hydrate Name Note: 98% CAS: 345909-35-5 CAS Min %: 97.5 CAS Max %: 100.0 Assay: ≥97.5% Assay Percent Range: 98% Molecular Formula: C10H7NO3·xH2O Formula Weight: 189.17 MDL Number: MFCD00149476 Synonym: 4-Hydroxyquinaldic acid

Alfa Aesar™ Ethyl 4-chloro-2-(methylthio)pyrimidine-5-carboxylate, 98%

Chemical Name or Material: Ethyl 4-chloro-2-(methylthio)pyrimidine-5-carboxylate CAS: 5909-24-0 Molecular Formula: C8H9ClN2O2S Formula Weight: 232.69 MDL Number: MFCD00006085 Synonym: 4-Chloro-2-(methylthio)pyrimidine-5-carboxylic acid ethyl ester; Ethyl 4-chloro-2-(methylmercapto)pyrimidine-5-carboxylate

L-β-Homoproline hydrochloride, 98% , ACROS Organics™

Chemical Name or Material: L-β-Homoproline hydrochloride CAS: 53912-85-9 Assay: ≥97.5% Assay Percent Range: 98% Molecular Formula: C6H11NO2·ClH Formula Weight: 165.62 MDL Number: MFCD07363484 Synonym: (S)-2-(2-Pyrrolidinyl)acetic acid hydrochloride

Alfa Aesar™ 2-Chloro-4-(4-morpholinyl)quinazoline, 97%

Chemical Name or Material: 2-Chloro-4-(4-morpholinyl)quinazoline CAS: 39213-05-3 Formula Weight: 249.7

Alfa Aesar™ 4-Bromo-2-(4-morpholinyl)benzonitrile, 98%

Chemical Name or Material: 4-Bromo-2-(4-morpholinyl)benzonitrile CAS: 1260762-06-8 Formula Weight: 267.13 UN Number: UN3439

Histamine dihydrochloride, 99%, ACROS Organics™

Chemical Name or Material: Histamine dihydrochloride Assay: ≥98.5% (total base) Assay Percent Range: 99% Molecular Formula: C5H9N3·2ClH Formula Weight: 184.07

Alfa Aesar™ Disuccinimidyl glutarate, 97%

Chemical Name or Material: Disuccinimidyl glutarate CAS: 79642-50-5 Molecular Formula: C13H14N2O8 Formula Weight: 326.26 MDL Number: MFCD00153597 Beilstein: 8575145 Synonym: Di(N-succinimidyl) glutarate; DSG

Alfa Aesar™ 1-Methylpyrrolidine, 98%

Chemical Name or Material: 1-Methylpyrrolidine CAS: 120-94-5 Molecular Formula: C5H11N Formula Weight: 85.15 MDL Number: MFCD00003173 UN Number: UN3286

Alfa Aesar™ Methyl 2-methylnicotinate, 97%

Chemical Name or Material: Methyl 2-methylnicotinate CAS: 65719-09-7 Molecular Formula: C8H9NO2 Formula Weight: 151.17 MDL Number: MFCD00051961 Beilstein: 471919 Synonym: Methyl 2-methylpyridine-3-carboxylate; 2-Methylnicotinic acid methyl ester

Alfa Aesar™ Chromone-2-carboxylic acid, 97%

Chemical Name or Material: Chromone-2-carboxylic acid CAS: 4940-39-0 Molecular Formula: C10H6O4 Formula Weight: 190.15 MDL Number: MFCD00006838 Beilstein: 146442 Merck Index: 14,2237 Synonym: Chromocarb; 4-Oxo-4H-1-benzopyran-2-carboxylic acid

Alfa Aesar™ 5-Acetyl-2-amino-4-methylthiazole, 97+%

Chemical Name or Material: 5-Acetyl-2-amino-4-methylthiazole CAS: 30748-47-1 Molecular Formula: C6H8N2OS Formula Weight: 156.21 MDL Number: MFCD00051952 Beilstein: 127111 Synonym: 5-Acetyl-4-methyl-2-thiazolamine

Alfa Aesar™ 3-(3-Piperidinyloxy)benzonitrile, 99%

Chemical Name or Material: 3-(3-Piperidinyloxy)benzonitrile CAS: 902836-93-5 Molecular Formula: C12H14N2O Formula Weight: 202.26 MDL Number: MFCD08061079

Alfa Aesar™ 2-Fluoro-5-nitropyridine, 98%

Chemical Name or Material: 2-Fluoro-5-nitropyridine CAS: 456-24-6 Formula Weight: 142.09 MDL Number: MFCD03095059 Beilstein: 120351

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