Heterocyclic Building Blocks

Quinine sulfate dihydrate, 99+%, ACROS Organics™

Chemical Name or Material: Quinine sulfate dihydrate Name Note: 99+% CAS: 6119-70-6 Assay: 99.0 to 101.0% (on anhydrous basis) (Total base) Assay Percent Range: 99+% Molecular Formula: H2SO4·2H2O Formula Weight: 782.96 MDL Number: MFCD00150790

Alfa Aesar™ TEMPO, free radical, 98+%

Chemical Name or Material: TEMPO CAS: 2564-83-2 Name Note: free radical Molecular Formula: C9H18NO Formula Weight: 156.25 MDL Number: MFCD00009599 UN Number: UN3263 Beilstein: 1422418 Merck Index: 14,9140 Synonym: 2,2,6,6-Tetramethyl-1-piperidinyloxy, free radical

Rhodamine 110, 98+%, Acros Organics™

Chemical Name or Material: Rhodamine 110 CAS: 13558-31-1 Purity Grade: Pure Assay: ≥98% Assay Percent Range: 98+% Molecular Formula: C20H15ClN2O3 Formula Weight: 366.79

N-Hydroxysuccinimide, 98+%, ACROS Organics™

Chemical Name or Material: N-Hydroxysuccinimide Name Note: 98+% CAS: 6066-82-6 CAS Min %: 98.0 CAS Max %: 100.0 Assay: ≥98% Assay Percent Range: 98+% Molecular Formula: C4H5NO3 Formula Weight: 115.09 MDL Number: MFCD00005516 Synonym: 1-Hydroxy-2, 5-pyrrolidinedione

Alfa Aesar™ 5-Hydroxymethyl-2-furaldehyde, 97%

Chemical Name or Material: 5-Hydroxymethyl-2-furaldehyde CAS: 67-47-0 Molecular Formula: C6H6O3 Formula Weight: 126.11 MDL Number: MFCD00003234 Beilstein: 110889 Merck Index: 14,4832 Synonym: 5-(Hydroxymethyl)furfural

Nigrosine, pure, water soluble, high purity biological stain, ACROS Organics™

Chemical Name or Material: Nigrosine Name Note: Water soluble, Pure CAS: 8005-03-6 Purity Grade: Pure MDL Number: MFCD00044681 Synonym: Acid Black 2, C.I. 50420

Alfa Aesar™ Dimidium bromide, 95%

Chemical Name or Material: Dimidium bromide CAS: 518-67-2 Molecular Formula: C20H18BrN3 Formula Weight: 380.31 MDL Number: MFCD00011757 Synonym: 3,8-Diamino-5-methyl-6-phenylphenanthridinium bromide

Alfa Aesar™ 3,5-Diamino-1,2,4-triazole, 98+%

Chemical Name or Material: 3,5-Diamino-1,2,4-triazole CAS: 1455-77-2 Molecular Formula: C2H5N5 Formula Weight: 99.1 MDL Number: MFCD00005233 Beilstein: 112467 Synonym: Guanazole; 1H-1,2,4-Triazole-3,5-diamine

1,4-Dioxane, 99+%, extra pure, stabilized, ACROS Organics™

Chemical Name or Material: 1, 4-Dioxane Name Note: 99+% CAS: 123-91-1 CAS Min %: 99.0 CAS Max %: 100.0 Purity Grade: Extra Pure Assay: ≥99% Assay Percent Range: 99+% Molecular Formula: C4H8O2 Formula Weight: 88.11 MDL Number: MFCD00006571 Synonym: Diox

Alfa Aesar™ Creatinine, 98%

Chemical Name or Material: Creatinine CAS: 60-27-5 Molecular Formula: C4H7N3O Formula Weight: 113.12 MDL Number: MFCD00059730 Beilstein: 112061 Merck Index: 14,2569 Synonym: 2-Imino-1-methylimidazolidin-4-one

Melamine, 99%, ACROS Organics™

Chemical Name or Material: Melamine CAS: 108-78-1 Assay: ≥98.5% Assay Percent Range: 99% Molecular Formula: C3H6N6 Formula Weight: 126.12 MDL Number: MFCD00006055 Synonym: 2, 4, 6-Triamino-s-triazine

Alfa Aesar™ O-(6-Chloro-1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate, 98+%

Chemical Name or Material: O-(6-Chloro-1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate CAS: 330645-87-9 Molecular Formula: C11H15ClF6N5OP Formula Weight: 413.69 MDL Number: MFCD04973268 Synonym: HCTU

Rhodamine B, 98+%, Acros Organics™

Chemical Name or Material: Rhodamine B Name Note: Pure CAS: 81-88-9 Purity Grade: Pure Assay: ≥98% Assay Percent Range: ≥98% Molecular Formula: C28H31ClN2O3 Formula Weight: 479.01 MDL Number: MFCD00011931 Synonym: Basic Violet 10, C.I. 45170

1H-Indole-3-acetic Acid, +99%, ACROS Organics™

Chemical Name or Material: 1H-Indole-3-acetic acid CAS: 87-51-4 CAS Min %: 99.0 CAS Max %: 100.0 Assay: ≥99% Assay Percent Range: 99+% Molecular Formula: C10H9NO2 Formula Weight: 175.19 MDL Number: MFCD00005636 Synonym: 2-(1H-indol-3-yl)acetic acid, Heteroauxin

Thiazolyl blue tetrazolium bromide, 98%, Acros Organics™

Chemical Name or Material: Thiazolyl blue tetrazolium bromide Name Note: 98% CAS: 298-93-1 CAS Min %: 97.5 CAS Max %: 100.0 Assay Percent Range: 98% Molecular Formula: C18H16BrN5S Formula Weight: 414.32 Synonym: 3-(4, 5-Dimethylthiazol-2-yl)-2, 5-diphenyl-2H-tetrazolium bromide

Alfa Aesar™ (1-Hexadecyl)pyridinium chloride monohydrate, 98%

Chemical Name or Material: (1-Hexadecyl)pyridinium chloride monohydrate CAS: 6004-24-6 Molecular Formula: C21H38ClN·H2O Formula Weight: 358.02 (339.99 Anhydrous) MDL Number: MFCD00149977 UN Number: UN2811 Beilstein: 3578606 Merck Index: 14,2032 Synonym: Cetylpyridinium chloride monohydrate

MES hydrate, 99+%, Acros Organics™

Chemical Name or Material: MES hydrate Name Note: 99% CAS: 1266615-59-1 Purity Grade: For biochemistry Assay: ≥99% Assay Percent Range: 99+% Molecular Formula: C6H13NO4S·xH2O Formula Weight: 195.23 MDL Number: MFCD00149409 Synonym: 4-Morpholinoethanesulfonic acid hydrate, MES

Alfa Aesar™ 4,6-Dihydroxy-5-nitropyrimidine, 98%

Chemical Name or Material: 4,6-Dihydroxy-5-nitropyrimidine CAS: 2164-83-2 Molecular Formula: C4H3N3O4 Formula Weight: 157.09 MDL Number: MFCD00006110 Beilstein: 611622

Alfa Aesar™ Glycidyl phenyl ether, 99%

Chemical Name or Material: Glycidyl phenyl ether CAS: 122-60-1 Molecular Formula: C9H10O2 Formula Weight: 150.18 MDL Number: MFCD00005133 Beilstein: 2744 Synonym: 1,2-Epoxy-3-phenoxypropane; 2,3-Epoxypropyl phenyl ether

Coumarin, 99+%, ACROS Organics™

Chemical Name or Material: Coumarin Name Note: 99+% CAS: 91-64-5 Assay: ≥99.0% Assay Percent Range: 99+% Molecular Formula: C9H6O2 Formula Weight: 146.15 MDL Number: MFCD00006850 Synonym: 2H-1-Benzopyran-2-one

9-Aminoacridine hemihydrate, 98%, ACROS Organics™

Chemical Name or Material: 9-Aminoacridine hemihydrate Name Note: 98% CAS: 65944-23-2 CAS Min %: 97.5 CAS Max %: 100.0 CAS: 90-45-9 Assay Percent Range: 98% Molecular Formula: C13H10N2·1/2H2O Formula Weight: 203.16 MDL Number: MFCD00150520 Synonym: 9-Acridinamine hemihydrate

Phenazine methosulfate, 98%, ACROS Organics™

Chemical Name or Material: Phenazine methosulfate Name Note: 99% CAS: 299-11-6 Assay Percent Range: 98% Molecular Formula: C13H11N2·CH3O4S Formula Weight: 306.33 MDL Number: MFCD00011923 Synonym: N-Methylphenazonium methosulfate, PMS

Methylene Blue, pure, certified, ACROS Organics™

Chemical Name or Material: Methylene Blue CAS: 61-73-4 Purity Grade: Pure Molecular Formula: C16H18ClN3S Formula Weight: 319.85 MDL Number: MFCD00012111 Synonym: Basic Blue 9

L-Nicotine, 99+%, ACROS Organics™

Chemical Name or Material: L-Nicotine Assay: ≥99% Assay Percent Range: 99+% Molecular Formula: C10H14N2 Formula Weight: 162.23

Alfa Aesar™ 5,6-Diphenyl-3-(2-pyridyl)-1,2,4-triazine-4,4''-disulfonic acid monosodium salt hydrate, 97%

Chemical Name or Material: 5,6-Diphenyl-3-(2-pyridyl)-1,2,4-triazine-4,4''-disulfonic acid monosodium salt hydrate CAS: 69898-45-9 Molecular Formula: C20H13N4NaO6S2·xH2O Formula Weight: 492.47 (Anhydrous) MDL Number: MFCD00150794 Beilstein: 5222087 Synonym: 3-(2-Pyridyl)-5,6-diphenyl-1,2,4-triazine-4',4''-disulfonic acid monosodium salt hydrate; PDT-sulfonate monosodium salt hydrate

Alfa Aesar™ delta-Valerolactone, 98%, may contain polymer; distil to remove

Chemical Name or Material: delta-Valerolactone CAS: 542-28-9 Name Note: may contain polymer; distil to remove Molecular Formula: C5H8O2 Formula Weight: 100.12 MDL Number: MFCD00006645 Beilstein: 106436 Synonym: 5-Hydroxypentanoic acid lactone; delta-Pentanolactone

2-Chlorothiophene, 97%, ACROS Organics™

Chemical Name or Material: 2-Chlorothiophene CAS: 96-43-5 CAS Min %: 96.0 CAS Max %: 100.0 Assay: 97% Assay Percent Range: 97% Molecular Formula: C4H3ClS Formula Weight: 118.58 MDL Number: MFCD00005421

Papaverine hydrochloride, 99%, ACROS Organics™

Chemical Name or Material: Papaverine hydrochloride CAS: 61-25-6 Assay: 99% Assay Percent Range: 99% Molecular Formula: C20H21NO4·ClH Formula Weight: 375.85 MDL Number: MFCD00012745 Synonym: 6, 7-Dimethoxy-1-(3, 4-dimethoxybenzyl)-isoquinoline hydrochloride

Hydroxychloroquine sulfate, 98%, ACROS Organics™

Chemical Name or Material: Hydroxychloroquine sulfate Assay Percent Range: 98% Molecular Formula: C18H26ClN3O·H2SO4 Formula Weight: 433.96 MDL Number: MFCD00078203 Synonym: 7-Chloro-4-[4-[ethyl-(2-hydroxyethyl)amino]-1-methylbutylamino]quinoline

L-Carnosine, 98%, ACROS Organics™

Chemical Name or Material: L-Carnosine CAS: 305-84-0 Assay: 98% Assay Percent Range: 98% Molecular Formula: C9H14N4O3 Formula Weight: 226.23 MDL Number: MFCD00005207 Synonym: N-β-Alanyl-L-histidine

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