Heterocyclic Building Blocks

Eosin Y, pure, certified, ACROS Organics™

Chemical Name or Material: Eosin Y CAS: 17372-87-1 Purity Grade: Pure Molecular Formula: C20H6Br4Na2O5 Formula Weight: 691.85 MDL Number: MFCD00005040 Synonym: 2',4',5',7'-Tetrabromofluorescein, disodium salt, Eosin Yellowish, C.I. 45380, Eosin Yellowish, 2', 4', 5'

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

Cycloheximide, 95%, ACROS Organics™

Chemical Name or Material: Cycloheximide CAS: 66-81-9 Assay: 95% Assay Percent Range: 95% Molecular Formula: C15H23NO4 Formula Weight: 281.35 MDL Number: MFCD00082346 Synonym: Actidione

1,10-Phenanthroline, 99+%, ACROS Organics™

Chemical Name or Material: 1, 10-Phenanthroline CAS: 66-71-7 CAS Min %: 99.0 CAS Max %: 100.0 Assay: ≥99% Assay Percent Range: 99+% Molecular Formula: C12H8N2 Formula Weight: 180.21 MDL Number: MFCD00011678 Synonym: o-Phenanthroline

Alfa Aesar™ 4-Amino-3-hydrazino-5-mercapto-1,2,4-triazole, 99+%

Chemical Name or Material: 4-Amino-3-hydrazino-5-mercapto-1,2,4-triazole CAS: 1750-12-5 Molecular Formula: C2H6N6S Formula Weight: 146.17 MDL Number: MFCD00003098 UN Number: UN1325 Beilstein: 134867 Synonym: 4-Amino-3-hydrazino-1,2,4-triazole-5-thiol

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

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™ 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

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

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: Heteroauxin, 2-(1H-indol-3-yl)acetic acid

Acetaldehyde Ammonia Trimer 98%, ACROS Organics™

Chemical Name or Material: Acetaldehyde ammonia trimer Name Note: 98% CAS: 58052-80-5 CAS Min %: 97.5 CAS Max %: 100.0 Assay: 98% Assay Percent Range: 98% Molecular Formula: C6H15N3·3H2O Formula Weight: 183.26 Synonym: Hexahydro-2, 4, 6-trimethyl-s-triazine trihydrate

1-Methyl-2-pyrrolidinone, ACS reagent, ACROS Organics™

Chemical Name or Material: 1-Methyl-2-pyrrolidinone CAS: 872-50-4 Purity Grade: ACS Reagent Grade Assay: ≥99.5% Molecular Formula: C5H9NO Formula Weight: 99.13 Synonym: NMP, N-Methylpyrrolidone

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

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

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

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

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

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

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

Thiamine Hydrochloride 98.5-101.5%, ACROS Organics™

Chemical Name or Material: Thiamine hydrochloride Name Note: 98.5-101.5% CAS: 67-03-8 Assay: 98.5 to 101.5% (on anhydrous substance) Assay Percent Range: 98.5 to 101.5% Molecular Formula: C12H17ClN4OS·HCl Formula Weight: 337.26 MDL Number: MFCD00012780 Synonym: Vitamin B1 hydrochloride

Nalidixic acid, 99.5%, ACROS Organics™

Chemical Name or Material: Nalidixic acid Name Note: 99.5% CAS: 389-08-2 CAS Min %: 99.4 CAS Max %: 100.0 Assay: 99.5% Assay Percent Range: 99.5% Molecular Formula: C12H12N2O3 Formula Weight: 232.24 MDL Number: MFCD00006884 Synonym: 1, 4-Dihydro-1-ethyl-7-methyl-4-oxo-1, 8-naphthyridine-3-carboxylic acid

Alfa Aesar™ N-(Ethoxycarbonyl)phthalimide, 97%

Chemical Name or Material: N-(Ethoxycarbonyl)phthalimide CAS: 22509-74-6 Molecular Formula: C11H9NO4 Formula Weight: 219.2 MDL Number: MFCD00005893 Beilstein: 196340 Synonym: N-(Carbethoxy)phthalimide; Nefkens' Reagent

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

Kinetin, 99%, ACROS Organics™

Chemical Name or Material: Kinetin Assay: 99% Assay Percent Range: 99% Molecular Formula: C10H9N5O Formula Weight: 215.21 Synonym: N6-Furfuryladenine, 6-Furfurylaminopurine

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

1,1'-sulfonyldiimidazole, +98%, ACROS Organics™

Chemical Name or Material: 1, 1'-Sulfonyldiimidazole CAS: 7189-69-7 CAS Min %: 98.0 CAS Max %: 100.0 Assay: ≥98% Assay Percent Range: 98+% Molecular Formula: C6H6N4O2S Formula Weight: 198.21 MDL Number: MFCD00015893

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