K2144

Ko143 hydrate

≥98% (HPLC), powder, BCRP inhibitor

• Synonym(s): (3S,6S,12aS)-1,2,3,4,6,7,12,12a-Octahydro-9-methoxy-6-( 2-methylpropyl)-1,4-dioxopyrazino[1′,2′:1,6]pyrido[3,4- b]indole-3-propanoic acid 1,1-dimethylethyl ester hydrate, Ko-143 hydrate
• Empirical Formula (Hill Notation): C₂₆H₃₅N₃O₅ · xH₂O
• CAS Number: 461054-93-3
• Molecular Weight: 469.57 (anhydrous basis)
• MDL number: MFCD19053160
• UNSPSC Code: 12352200
• PubChem Substance ID: 329817134
• NACRES: NA.77

Properties

• product name: Ko143 hydrate, ≥98% (HPLC)
• assay: ≥98% (HPLC)
• form: powder
• color: white to off-white
• solubility: DMSO: >10 mg/mL
• originator: GlaxoSmithKline
• storage temp.: room temp
• SMILES string: O.COc1ccc2c3C[C@@H]4N([C@@H](CC(C)C)c3[nH]c2c1)C(=O)[C@H](CCC(=O)OC(C)(C)C)NC4=O
• InChI: 1S/C26H35N3O5.H2O/c1-14(2)11-20-23-17(16-8-7-15(33-6)12-19(16)27-23)13-21-24(31)28-18(25(32)29(20)21)9-10-22(30)34-26(3,4)5;/h7-8,12,14,18,20-21,27H,9-11,13H2,1-6H3,(H,28,31);1H2/t18-,20-,21-;/m0./s1
• InChI key: ZXXZDXPNJJZRDC-PSLBYKFTSA-N

Description

Application

Ko143 hydrate has been used:

• to determine the role of ATP-binding cassette sub-family G member 2 (ABCG2), human embryonic kidney (HEK)-C1 and HEK-ABCG2 in tumor microenvironment
• to inhibit ABCG2 for sphere formation assay
• in calcein-AM efflux inhibition to monitor multidrug resistance protein (MRP)-function in kidney
• for cell viability assay

Biochem/physiol Actions

Ko143 has been used as a positive control inhibitor on functions of BCRP in MCF7 and BCRP over-expressing MCF7/MX100 cell lines using a BCRP prototypical substrate mitoxantrone. The ABCG2 transporter breast cancer resistance protein (BCRP) plays an important role in disposition of many drugs and environmental toxins. Ko143 displays > 200-fold selectivity over P-gp and MRP-1 transporters. It increases intracellular drug accumulation and reverse BCRP-mediated multidrug resistance. It blocked topotecan and ABZSO transport in a concentration-dependent manner. Ko143 is reported to be a more specific inhibitor of BCRP than other known inhibitors of BCRP such as fumitremorgin C and GF120918.

Ko143 has been used as a positive control inhibitor on functions of breast cancer resistance protein (BCRP) using a BCRP prototypical substrate mitoxantrone. BCRP, an ABCG2 transporter, plays an important role in disposition of many drugs and environmental toxins. Ko143 displays > 200-fold selectivity over P-gp and MRP-1 transporters and thus is more specific than other known BCRP inhibitors such as fumitremorgin C and GF120918. It increases intracellular drug accumulation and reverses BCRP-mediated multidrug resistance. It blocks topotecan and ABZSO transport in a concentration-dependent manner.

Features and Benefits

This compound is a featured product for ADME Tox research. Click here to discover more featured ADME Tox products. Learn more about bioactive small molecules for other areas of research at sigma.com/discover-bsm.

This compound was developed by GlaxoSmithKline. To browse the list of other pharma-developed compounds and Approved Drugs/Drug Candidates, click here.

Safety Information

• pictograms: GHS07
• signalword: Warning
• hcodes: H315,H319,H335
• pcodes: P261 - P264 - P271 - P280 - P302 + P352 - P305 + P351 + P338
• Hazard Classifications: Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3
• target_organs: Respiratory system
• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 3
• flash_point_f: Not applicable
• flash_point_c: Not applicable