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)
• Quality Level: 100
• 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.

Storage and Stability

The stability of this product in solution has not been determined. According to various sources this product can be stored in solvent (DMSO) at -80°C for 6 months and -20°C for 1 month.

Safety Information

• Pictograms: GHS07
• Signal Word: Warning
• Hazard Statements: H315,H319,H335
• Precautionary Statements: 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 Code: 11 - Combustible Solids
• WGK: WGK 3
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable