Heterocyclic Building Blocks

Erythrosin B, pure, high purity, biological stain, ACROS Organics™

25GR Erythrosin B, pure, high purity, biological stain

MES, 99+%, <1% water, ACROS Organics™

Chemical Name or Material: MES CAS: 4432-31-9 Assay: ≥99% Assay Percent Range: 99+% Molecular Formula: C6H13NO4S Formula Weight: 195.24 MDL Number: MFCD00006181 Synonym: 2-(N-Morpholino)ethanesulfonic acid 50GR MES, 99%, <1% water

4-(Hydroxymethyl)-1,3-dioxolan-2-one, 90%, ACROS Organics™

25GR 4-(Hydroxymethyl)-1,3-dioxolan-2-one, 90%

1-Butyl-3-methylimidazolium chloride, 98+%, ACROS Organics™

Chemical Name or Material: 1-Butyl-3-methylimidazolium chloride CAS: 79917-90-1 CAS Min %: 98.0 CAS Max %: 100.0 Assay: ≥98% Assay Percent Range: 98+% Molecular Formula: C8H15ClN2 Formula Weight: 174.67 MDL Number: MFCD03095425 500GR 1-Butyl-3-methylimidazolium chloride, 98+%

Hemin, 99%, porcine, ACROS Organics™

Chemical Name or Material: Hemin Name Note: 99% CAS: 16009-13-5 Assay: ≥97.5% (HPLC) Assay Percent Range: 98% Molecular Formula: C34H32ClFeN4O4 Formula Weight: 651.95 MDL Number: MFCD00010726 Synonym: Chloroprotoporphyrin IX iron(III) 25GR Hemin, 98%, porcine

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 5-(HYDROXYMETHYL)-2-FURALDEHYDE, 99%,25G

MES sodium salt, 99%, ACROS Organics™

Chemical Name or Material: MES sodium salt CAS: 71119-23-8 Assay: ≥98.5% (after ion exchange) Assay Percent Range: 99% Molecular Formula: C6H12NNaO4S Formula Weight: 217.22 MDL Number: MFCD00065473 100GR MES sodium salt, 99%

tert-Butyl 4-(2-chloroethyl)piperazine-1-carboxylate, 97%, ACROS Organics™

Chemical Name or Material: tert-Butyl 4-(2-chloroethyl)piperazine-1-carboxylate Assay: ≥96.0% Assay Percent Range: 97% Molecular Formula: C11H21ClN2O2 Formula Weight: 248.76 1GR tert-Butyl 4-(2-chloroethyl)piperazine-1-carboxylate, 97%

6-Mercaptopurine monohydrate, 99.5+%, ACROS Organics™

Chemical Name or Material: 6-Mercaptopurine monohydrate Name Note: 99.5+% CAS: 6112-76-1 CAS Min %: 99.5 CAS Max %: 100.0 Assay: ≥99.5% Assay Percent Range: 99.5+% Molecular Formula: C5H4N4S·H2O Formula Weight: 170.19 MDL Number: MFCD01461928 Synonym: 6-Purinethiol, 6MP 5GR 6-Mercaptopurine monohydrate, 99.5+%

Alfa Aesar™ 1-Benzylpiperazine dihydrochloride, 95%

250MG 1-Benzylpiperazine dihydrochloride, 95% 250mg

Alfa Aesar™ Flavone, 99%

Chemical Name or Material: Flavone CAS: 525-82-6 Molecular Formula: C15H10O2 Formula Weight: 222.24 MDL Number: MFCD00006825 Beilstein: 157598 Merck Index: 14,4092 Synonym: 2-Phenyl-4H-1-benzopyran-4-one; 2-Phenylchromone FLAVONE, 99% 5G

Alfa Aesar™ 6-[N-(2-chloro-4-pyrimidinyl)methylamino]-2,3-dimethyl-2H-indazole, 96%

500MG 6-[N-(2-chloro-4-pyrimidinyl)methylamino]-2,3-dimethyl-2H-indazole, 96% 500mg

Alfa Aesar™ 5,6,7-Trihydroxyflavone, 97%

Chemical Name or Material: 5,6,7-Trihydroxyflavone CAS: 491-67-8 Molecular Formula: C15H10O5 Formula Weight: 270.24 MDL Number: MFCD00017459 Beilstein: 272683 Merck Index: 14,942 Synonym: Baicalein 5,6,7-TRIHYDROXYFLAVONE, 97%,100MG

1,3,4-Triphenyl-4,5-dihydro-1H-1,2,4-triazol-5-ylidene, ACROS Organics™

1GR 1,3,4-Triphenyl-4,5-dihydro-1H-1,2,4-triazol-5-ylidene

Succinimide, 98%, ACROS Organics™

Chemical Name or Material: Succinimide Name Note: 98% CAS: 123-56-8 Assay: 98% Assay Percent Range: 98% Molecular Formula: C4H5NO2 Formula Weight: 99.08 MDL Number: MFCD00005495 Synonym: 2, 5-Pyrrolidinedione, Butanimide 100GR Succinimide, 98%

Alfa Aesar™ 2-Aminobenzimidazole, 97+%

Chemical Name or Material: 2-Aminobenzimidazole CAS: 934-32-7 Molecular Formula: C7H7N3 Formula Weight: 133.15 MDL Number: MFCD00005596 Beilstein: 116525 Synonym: 1H-Benzimidazol-2-amine 2-AMINOBENZIMIDAZOLE, 98+%100G

Methyl Isonicotinate 98%, ACROS Organics™

Chemical Name or Material: Methyl isonicotinate Name Note: 98% CAS: 2459-10-1 Assay: 98% Assay Percent Range: 98% Molecular Formula: C7H7NO2 Formula Weight: 137.14 MDL Number: MFCD00006427 Synonym: Methyl 4-pyridinecarboxylate 500ML Methyl isonicotinate, 98%

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 100GR 1,10-Phenanthroline, 99+%

2-Amino-5-methylthiazole 98%, ACROS Organics™

Chemical Name or Material: 2-Amino-5-methylthiazole CAS: 7305-71-7 CAS Min %: 97.5 CAS Max %: 100.0 Assay: 98% Assay Percent Range: 98% Molecular Formula: C4H6N2S Formula Weight: 114.17 MDL Number: MFCD00078317 5GR 2-Amino-5-methylthiazole, 98%

1,4-Benzodioxan-6-carboxaldehyde, 98%, ACROS Organics™

Chemical Name or Material: 1, 4-Benzodioxan-6-carboxaldehyde CAS: 29668-44-8 CAS Min %: 97.5 CAS Max %: 100.0 Assay: 98% Assay Percent Range: 98% Molecular Formula: C9H8O3 Formula Weight: 164.16 MDL Number: MFCD00010092 1GR 1,4-Benzodioxan-6-carboxaldehyde, 98%

Alfa Aesar™ 3-Indoxyl sulfate potassium salt, 97%

Chemical Name or Material: 3-Indoxyl sulfate potassium salt CAS: 2642-37-7 Molecular Formula: C8H6KNO4S Formula Weight: 251.31 MDL Number: MFCD00037931 Beilstein: 3921324 Synonym: Potassium 3-indoxyl sulfate 3-INDOXYL SULFATE POTASSIUM SALT, 97%,0,25G

Alfa Aesar™ 8-Ethoxyquinoline-5-sulfonic acid sodium salt hydrate, 97%

Chemical Name or Material: 8-Ethoxyquinoline-5-sulfonic acid sodium salt hydrate CAS: 80789-76-0 Molecular Formula: C11H10NNaO4S·xH2O Formula Weight: 275.26 (Anhydrous) MDL Number: MFCD00149478 Synonym: Actinoquinol; Sodium 8-ethoxyquinoline-5-sulfonate hydrate 8-ETHOXYQUINOLINE-5-SULFONIC ACID SODIUM ,50G

Fluorescein Disodium Salt Dihydrate 90%, ACROS Organics™

Chemical Name or Material: Fluorescein, disodium salt dihydrate Name Note: 90% CAS: 1264198-62-0 Purity Grade: Pure Assay Percent Range: 90% Molecular Formula: C20H10Na2O5·2H2O Formula Weight: 412.3 MDL Number: MFCD00150814 Synonym: Acid Yellow 73 dihydrate, Fluorescein, water soluble dihydrate, Uranine dihydrate, C.I. 45350 dihydrate 100GR Fluorescein disodium salt dihydrate, 90%, pure

4-Dimethylaminopyridine, 99%, ACROS Organics™

Chemical Name or Material: 4-Dimethylaminopyridine CAS: 1122-58-3 CAS Min %: 98.5 CAS Max %: 100.0 Assay Percent Range: 99% Molecular Formula: C7H10N2 Linear Formula: (C5H4N)N(CH3)2 Formula Weight: 122.17 MDL Number: MFCD00006418 Synonym: 4-DMAP 5GR 4-Dimethylaminopyridine, 99%

1-(2-Aminoethyl)-2-methyl-5-nitroimidazole dihydrochloride monohydrate, 98%, ACROS Organics™

Chemical Name or Material: 1-(2-Aminoethyl)-2-methyl-5-nitroimidazole dihydrochloride monohydrate Name Note: 98% CAS: 49575-10-2 CAS Min %: 97.5 CAS Max %: 100.0 Assay Percent Range: 98% Molecular Formula: 2HCl·H2O Formula Weight: 261.11 MDL Number: MFCD00066965 5GR 1-(2-Aminoethyl)-2-methyl-5-nitroimidazole dihydrochloride monohydrate, 98%

Alfa Aesar™ O-(7-Aza-1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate, 99%

Chemical Name or Material: O-(7-Aza-1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate CAS: 148893-10-1 Molecular Formula: C10H15F6N6OP Formula Weight: 380.23 MDL Number: MFCD00274639 Synonym: HATU; 1-[Bis(dimethylamino)methylene]-1H-1,2,3-triazolo[4,5-b]pyridinium 1-oxide hexafluorophosphate O-(7-AZABENZOTRIAZOL-1-YL)N,N,N',N'-TETRAMETHYLU-1

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 250GR N-Hydroxysuccinimide, 98+%

Alfa Aesar™ 3-Hydroxypyridine-4-carboxylic acid, 98%

Chemical Name or Material: 3-Hydroxypyridine-4-carboxylic acid CAS: 10128-71-9 Formula Weight: 139.11 MDL Number: MFCD00234165 Beilstein: 383677 Synonym: 3-Hydroxyisonicotinic acid 1GR 3-Hydroxypyridine-4-carboxylic acid, 98% 1g

NBD chloride, 98%, ACROS Organics™

Chemical Name or Material: NBD chloride CAS: 10199-89-0 CAS Min %: 97.5 CAS Max %: 100.0 Assay: 98% Assay Percent Range: 98% Molecular Formula: C6H2ClN3O3 Formula Weight: 199.55 MDL Number: MFCD00005808 Synonym: 4-Chloro-7-nitrobenzofurazan, 4-Chloro-7-nitrobenzo-2-oxa-1, 3-diazole 1GR NBD chloride, 98%

Alfa Aesar™ N-Methylmaleimide, 98+%

Chemical Name or Material: N-Methylmaleimide CAS: 930-88-1 Molecular Formula: C5H5NO2 Formula Weight: 111.1 MDL Number: MFCD00005508 UN Number: UN2928 Beilstein: 108550 Synonym: 1-Methyl-1H-pyrrole-2,5-dione N-METHYLMALEIMIDE, 98+% 25G

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