WARNING: This product is for research use only, not for human or veterinary use.

MedKoo CAT#: 406343

CAS#: 208237-49-4 (chloride)

Description: NK314 is a novel synthetic benzo[c]phenanthridine alkaloid that shows strong antitumor activity. It inhibited topoisomerase II activity and stabilized topoisomerase II-DNA cleavable complexes. The DNA breaks occurred within 1h after treatment with NK314 even without digestion of topoisomerase II by proteinase K, whereas etoposide required digestion of the enzyme protein in cleavable complex to detect DNA breaks. Pretreatment with topoisomerase II catalytic inhibitors, ICRF-193 and suramin, reduced both cleavable complex-mediated DNA breaks and proteinase K-independent DNA breaks, but protease inhibitors and nuclease inhibitors only decreased the latter.

Chemical Structure

CAS# 208237-49-4 (chloride)

Theoretical Analysis

MedKoo Cat#: 406343
Name: NK314
CAS#: 208237-49-4 (chloride)
Chemical Formula: C22H20ClNO4
Exact Mass: 0.00
Molecular Weight: 397.850
Elemental Analysis: C, 66.42; H, 5.07; Cl, 8.91; N, 3.52; O, 16.09

Price and Availability

This product is not in stock, which may be available by custom synthesis. For cost-effective reason, minimum order is 1g (price is usually high, lead time is 2~3 months, depending on the technical challenge). Quote less than 1g will not be provided. To request quote, please email to sales @medkoo.com or click below button.
Note: Price will be listed if it is available in the future.

Related CAS #: 732970-63-7 (cation)   208237-49-4 (chloride),  

Synonym: NK314; NK-314; NK 314.

IUPAC/Chemical Name: 1-hydroxy-2-methoxy-11a,13,14,15-tetrahydro-6aH-[1,3]dioxolo[4',5':4,5]benzo[1,2-c]pyrrolo[1,2-f]phenanthridin-12-ium chloride


InChi Code: InChI=1S/C22H19NO4.ClH/c1-25-17-7-6-13-14-5-4-12-9-18-19(27-11-26-18)10-15(12)21(14)23-8-2-3-16(23)20(13)22(17)24;/h4-7,9-10,12,15H,2-3,8,11H2,1H3;1H

SMILES Code: OC1=C(OC)C=CC2=C(C=CC3C4C=C5C(OCO5)=C3)C4=[N+]6C(CCC6)=C12.[Cl-]

Appearance: Solid powder

Purity: >98% (or refer to the Certificate of Analysis)

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.

Storage Condition: Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).

Solubility: Soluble in DMSO, not in water

Shelf Life: >2 years if stored properly

Drug Formulation: This drug may be formulated in DMSO

Stock Solution Storage: 0 - 4 C for short term (days to weeks), or -20 C for long term (months).

HS Tariff Code: 2934.99.9001

More Info:         

Biological target:
In vitro activity:
In vivo activity:

Preparing Stock Solutions

The following data is based on the product molecular weight 397.85 Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which will affect the solvent volumes required to prepare stock solutions.

Recalculate based on batch purity %
Concentration / Solvent Volume / Mass 1 mg 5 mg 10 mg
1 mM 1.15 mL 5.76 mL 11.51 mL
5 mM 0.23 mL 1.15 mL 2.3 mL
10 mM 0.12 mL 0.58 mL 1.15 mL
50 mM 0.02 mL 0.12 mL 0.23 mL
Formulation protocol:
In vitro protocol:
In vivo protocol:

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1: Guo L, Liu X, Jiang Y, Nishikawa K, Plunkett W. DNA-dependent protein kinase and ataxia telangiectasia mutated (ATM) promote cell survival in response to NK314, a topoisomerase IIα inhibitor. Mol Pharmacol. 2011 Aug;80(2):321-7. doi: 10.1124/mol.109.057125. Epub 2011 May 5. PubMed PMID: 21546556; PubMed Central PMCID: PMC3141888.

2: Hisatomi T, Sueoka-Aragane N, Sato A, Tomimasu R, Ide M, Kurimasa A, Okamoto K, Kimura S, Sueoka E. NK314 potentiates antitumor activity with adult T-cell leukemia-lymphoma cells by inhibition of dual targets on topoisomerase II{alpha} and DNA-dependent protein kinase. Blood. 2011 Mar 31;117(13):3575-84. doi: 10.1182/blood-2010-02-270439. Epub 2011 Jan 18. PubMed PMID: 21245486.

3: Toyoda E, Kagaya S, Cowell IG, Kurosawa A, Kamoshita K, Nishikawa K, Iiizumi S, Koyama H, Austin CA, Adachi N. NK314, a topoisomerase II inhibitor that specifically targets the alpha isoform. J Biol Chem. 2008 Aug 29;283(35):23711-20. doi: 10.1074/jbc.M803936200. Epub 2008 Jul 2. PubMed PMID: 18596031; PubMed Central PMCID: PMC3259784.

4: Onda T, Toyoda E, Miyazaki O, Seno C, Kagaya S, Okamoto K, Nishikawa K. NK314, a novel topoisomerase II inhibitor, induces rapid DNA double-strand breaks and exhibits superior antitumor effects against tumors resistant to other topoisomerase II inhibitors. Cancer Lett. 2008 Jan 18;259(1):99-110. Epub 2007 Nov 12. PubMed PMID: 17998154.

5: Guo L, Liu X, Nishikawa K, Plunkett W. Inhibition of topoisomerase IIalpha and G2 cell cycle arrest by NK314, a novel benzo[c]phenanthridine currently in clinical trials. Mol Cancer Ther. 2007 May;6(5):1501-8. PubMed PMID: 17513599.