Topoisomerase
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497 products
Popular Products
- Levofloxacin hydrochlorideCAS: 177325-13-2 Formula: C18H21ClFN3O4 Molecular Weight: 397.83● In Stock — US warehouse, ships to EU* Item #: L305201View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
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- SMILES
- CC1COC2=C3N1C=C(C(=O)C3=CC(=C2N4CCN(CC4)C)F)C(=O)O.Cl
- InChIKey
- CAOOISJXWZMLBN-PPHPATTJSA-N
- InChI
- 1S/C18H20FN3O4.ClH/c1-10-9-26-17-14-11(16(23)12(18(24)25)8-22(10)14)7-13(19)15(17)21-5-3-20(2)4-6-21;/h7-8,10H,3-6,9H2,1-2H3,(H,24,25);1H/t10-;/m0./s1
- Synonyms
- Weilisu | Levofloxacin (hydrochloride) | (S)-9-Fluoro-3-methyl-10-(4-methylpiperazin-1-yl)-7-oxo-3,7-dihydro-2H-[1,4]...
- LevofloxacinSolid Moligand™ ? Moligand™ — Aladdin's line of ligands and bioactive small molecules. Use for receptor, pathway, and binding studies needing defined small-molecule tools. ≥98%(HPLC)● In Stock — US warehouse, ships to EU* Item #: L157745View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (2S)-7-fluoro-2-methyl-6-(4-methylpiperazin-1-yl)-10-oxo-4-oxa-1-azatricyclo[7.3.1.05,13]trideca-5(13),6,8,11-tetraene-11-carboxylic acid
- SMILES
- CC1COC2=C3N1C=C(C(=O)C3=CC(=C2N4CCN(CC4)C)F)C(=O)O
- InChIKey
- GSDSWSVVBLHKDQ-JTQLQIEISA-N
- InChI
- 1S/C18H20FN3O4/c1-10-9-26-17-14-11(16(23)12(18(24)25)8-22(10)14)7-13(19)15(17)21-5-3-20(2)4-6-21/h7-8,10H,3-6,9H2,1-2H3,(H,24,25)/t10-/m0/s1
- Synonyms
- 1-bromo-2-trifluoromethyl benzene | o,.alpha.,.alpha.,.alpha.-Tetrafluorotoluene | GTPL10911 | KBio2_002199 | Levoflo...
- Levofloxacin hemihydrateCAS: 138199-71-0 EC Number: 604-067-2 PubChem CID: 3033924 Formula: C18H20FN3O4 · 0.5H2O Molecular Weight: 370.38● In Stock — US warehouse, ships to EU* Item #: L190773View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (2S)-7-fluoro-2-methyl-6-(4-methylpiperazin-1-yl)-10-oxo-4-oxa-1-azatricyclo[7.3.1.05,13]trideca-5(13),6,8,11-tetraene-11-carboxylic acid;hydrate
- SMILES
- CC1COC2=C3N1C=C(C(=O)C3=CC(=C2N4CCN(CC4)C)F)C(=O)O.CC1COC2=C3N1C=C(C(=O)C3=CC(=C2N4CCN(CC4)C)F)C(=O)O.O
- InChIKey
- SUIQUYDRLGGZOL-RCWTXCDDSA-N
- InChI
- show more
- Synonyms
- EN300-20644132 | Levofloxacin (USP) | 6GNT3Y5LMF | Levofloxacin Hemihydrate, Pharmaceutical Secondary Standard; Certi...
- Mitoxantrone, Inhibitor of DNA topoisomerase II alphaSolid Moligand™ ? Moligand™ — Aladdin's line of ligands and bioactive small molecules. Use for receptor, pathway, and binding studies needing defined small-molecule tools. ≥97%● In Stock — US warehouse, ships to EU* Item #: M339846View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 1,4-dihydroxy-5,8-bis[2-(2-hydroxyethylamino)ethylamino]anthracene-9,10-dione
- SMILES
- C1=CC(=C2C(=C1NCCNCCO)C(=O)C3=C(C=CC(=C3C2=O)O)O)NCCNCCO
- InChIKey
- KKZJGLLVHKMTCM-UHFFFAOYSA-N
- InChI
- 1S/C22H28N4O6/c27-11-9-23-5-7-25-13-1-2-14(26-8-6-24-10-12-28)18-17(13)21(31)19-15(29)3-4-16(30)20(19)22(18)32/h1-4,23-30H,5-12H2
- Synonyms
- L01DB07 | 5,8-Bis((2-((2-hydroxyethyl)amino)ethyl)amino)-1,4-dihydroxyanthraquinone | HMS2090D05 | 1,4-dihydroxy-5,8-...
- Levofloxacin mesylate◐ .Made to order · 8–12 wks Item #: L182973View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- show more
- SMILES
- CC1COC2=C3N1C=C(C(=O)C3=CC(=C2N4CCN(CC4)C)F)C(=O)O.CS(=O)(=O)O
- InChIKey
- ZSPLOATUDIRNAS-PPHPATTJSA-N
- InChI
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- Synonyms
- 7H-Pyrido(1,2,3-de)-1,4-benzoxazine-6-carboxylic acid, 9-fluoro-2,3-dihydro-3-methyl-10-(4-methyl-1-piperazinyl)-7-ox...
- Ciprofloxacin Hydrochloride MonohydrateCAS: 86393-32-0 EC Number: 617-845-1 Formula: C17H18FN3O3·HCl·H2O Molecular Weight: 367.81(as Anhydrous)Solid Analytical standard ? Analytical standard — certified-purity material for quantitative calibration. Use to prepare calibration standards and validate analytical methods.◐ .Made to order · 8–12 wks Item #: C114253View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 1-cyclopropyl-6-fluoro-4-oxo-7-piperazin-1-ylquinoline-3-carboxylic acid;hydrate;hydrochloride
- SMILES
- C1CC1N2C=C(C(=O)C3=CC(=C(C=C32)N4CCNCC4)F)C(=O)O.O.Cl
- InChIKey
- ARPUHYJMCVWYCZ-UHFFFAOYSA-N
- InChI
- 1S/C17H18FN3O3.ClH.H2O/c18-13-7-11-14(8-15(13)20-5-3-19-4-6-20)21(10-1-2-10)9-12(16(11)22)17(23)24;;/h7-10,19H,1-6H2,(H,23,24);1H;1H2
- Synonyms
- Microgan | Phaproxin | Bay-o-9867 monohydrate | Ciprofloxacin (hydrochloride monohydrate) | Catex | Ciprofur | Plenol...
- Ciprofloxacin lactateCAS: 97867-33-9 Formula: C20H24FN3O6 Molecular Weight: 421.43● In Stock — US warehouse, ships to EU* Item #: C131636View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 1-cyclopropyl-6-fluoro-4-oxo-7-piperazin-1-ylquinoline-3-carboxylic acid;2-hydroxypropanoic acid
- SMILES
- CC(C(=O)O)O.C1CC1N2C=C(C(=O)C3=CC(=C(C=C32)N4CCNCC4)F)C(=O)O
- InChIKey
- NRBJWZSFNGZBFQ-UHFFFAOYSA-N
- InChI
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- Synonyms
- 1-cyclopropyl-6-fluoro-4-oxo-7-(1-piperazinyl)-3-quinolinecarboxylic acid; 2-hydroxypropanoic acid | alpha-?hydroxy-?...
- AnthraquinoneMelting point standard ? Melting-point standard — certified material with a known, sharp melting point. Use to calibrate and verify melting-point apparatus.● In Stock — US warehouse, ships to EU* Item #: A119546View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- anthracene-9,10-dione
- SMILES
- C1=CC=C2C(=C1)C(=O)C3=CC=CC=C3C2=O
- InChIKey
- RZVHIXYEVGDQDX-UHFFFAOYSA-N
- InChI
- 1S/C14H8O2/c15-13-9-5-1-2-6-10(9)14(16)12-8-4-3-7-11(12)13/h1-8H
- Synonyms
- Anthracene,10-dihydro-9,10-dioxo- | Anthraquinone, 97% | Spectrum3_001501 | Morkit | 9,10-dihydroanthracene-9,10-dion...
- Rebeccamycin◐ .Made to order · 8–12 wks Item #: R276440View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
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- SMILES
- COC1C(OC(C(C1O)O)N2C3=C(C=CC=C3Cl)C4=C5C(=C6C7=C(C(=CC=C7)Cl)NC6=C42)C(=O)NC5=O)CO
- InChIKey
- QEHOIJJIZXRMAN-QZQSLCQPSA-N
- InChI
- show more
- Synonyms
- HY-19825 | 1,11-dichloro-12-(3,4-dihydroxy-6-hydroxymethyl-5-methoxytetrahydro-2H-2-pyranyl)-6,7,12,13-tetrahydro-5H-...
- Amsacrine, DNA topoisomerase II inhibitor● In Stock — US warehouse, ships to EU* Item #: A303844View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- N-[4-(acridin-9-ylamino)-3-methoxyphenyl]methanesulfonamide
- SMILES
- COC1=C(C=CC(=C1)NS(=O)(=O)C)NC2=C3C=CC=CC3=NC4=CC=CC=C42
- InChIKey
- XCPGHVQEEXUHNC-UHFFFAOYSA-N
- InChI
- 1S/C21H19N3O3S/c1-27-20-13-14(24-28(2,25)26)11-12-19(20)23-21-15-7-3-5-9-17(15)22-18-10-6-4-8-16(18)21/h3-13,24H,1-2H3,(H,22,23)
- Synonyms
- Acridinyl Anisidide | EN300-7481264 | NCGC00015113-01 | 4'-(9-Acridinylamino)methanesulphon-m-anisidide | Amsidyl (TN...
- Gatifloxacin, Topoisomerase IV inhibitorMoligand™ ? Moligand™ — Aladdin's line of ligands and bioactive small molecules. Use for receptor, pathway, and binding studies needing defined small-molecule tools. ≥98%● In Stock — US warehouse, ships to EU* Item #: G129827View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 1-cyclopropyl-6-fluoro-8-methoxy-7-(3-methylpiperazin-1-yl)-4-oxoquinoline-3-carboxylic acid
- SMILES
- CC1CN(CCN1)C2=C(C=C3C(=C2OC)N(C=C(C3=O)C(=O)O)C4CC4)F
- InChIKey
- XUBOMFCQGDBHNK-UHFFFAOYSA-N
- InChI
- 1S/C19H22FN3O4/c1-10-8-22(6-5-21-10)16-14(20)7-12-15(18(16)27-2)23(11-3-4-11)9-13(17(12)24)19(25)26/h7,9-11,21H,3-6,8H2,1-2H3,(H,25,26)
- Synonyms
- HMS3259P06 | AM-1155 | Spectrum3_000999 | PD-135432 | CHEBI:5280 | RKL10068 | 1-cyclopropyl-6-fluoro-8-methoxy-7-(3-m...
- RazoxaneCAS: 21416-67-1 Formula: C11H16N4O4 Molecular Weight: 268.27Solid Moligand™ ? Moligand™ — Aladdin's line of ligands and bioactive small molecules. Use for receptor, pathway, and binding studies needing defined small-molecule tools. ≥95%◐ .Made to order · 8–12 wks Item #: R168579View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 4-[2-(3,5-dioxopiperazin-1-yl)propyl]piperazine-2,6-dione
- SMILES
- CC(CN1CC(=O)NC(=O)C1)N2CC(=O)NC(=O)C2
- InChIKey
- BMKDZUISNHGIBY-UHFFFAOYSA-N
- InChI
- 1S/C11H16N4O4/c1-7(15-5-10(18)13-11(19)6-15)2-14-3-8(16)12-9(17)4-14/h7H,2-6H2,1H3,(H,12,16,17)(H,13,18,19)
- Synonyms
- AI3-52845 | Razoxana [INN-Spanish] | 2,6-Piperazinedione, 4,4'-(1-methyl-1,2-ethanediyl)bis- | (+/-)-1,2-Bis(3,5-diox...
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R&D Use Only Products supplied for research and development use
Frequently Asked Questions
How is the Topoisomerase listing put together?
It draws on reported Topoisomerase annotations within Cell Cycle/DNA Damage and lists each compound with its structure, identifiers, and the activity published for it. Always check the underlying assay before comparing potency values across entries.
How do I choose a Topoisomerase modulator for my assay?
Start from the assay format and readout — biochemical, cell-based, or in vivo — then compare the Topoisomerase entries on potency, selectivity over related family members, and solubility in your vehicle. Where several chemotypes are available, a reference compound plus a structurally unrelated backup is the usual way to control for off-target effects.
Which specifications matter most for Topoisomerase compounds?
Purity and identity confirmation come first, then solubility in DMSO or your chosen vehicle, recommended storage temperature, and stability in solution. For Topoisomerase work in particular, freshly prepared stocks avoid most of the reproducibility problems seen with stored plates. All products are supplied for professional research and development use only, and are not for use in humans, animals, diagnostics, or therapy.
What if the Topoisomerase compound I need is not listed?
Search by CAS number or SMILES first, since analogs of Topoisomerase compounds are often catalogued under a related target. Custom synthesis and bulk enquiries go to [email protected]. We supply verified businesses, research institutions, universities, and government agencies.












