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Desmethyl Erlotinib Sale

(Synonyms: 2-[[4-[(3-乙炔基苯基)氨基]-7-(2-甲氧基乙氧基)-6-喹唑啉基]氧基]乙醇,OSI-420 free base; CP-373420) 目录号 : GC43419

A metabolite of erlotinib

Desmethyl Erlotinib Chemical Structure

Cas No.:183321-86-0

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5 mg
¥1,224.00
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10 mg
¥2,141.00
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50 mg
¥6,118.00
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Sample solution is provided at 25 µL, 10mM.

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产品描述

Desmethyl erlotinib is a metabolite of erlotinib . Erlotinib is a tyrosine kinase inhibitor which acts on the epidermal growth factor receptor (EGFR), inhibiting EGFR-associated kinase activity (IC50 = 2.5 µM). This inhibits tumor growth in human head and neck carcinoma HN5 tumor xenografts in mice with an ED50 value of 9 mg/kg. Erlotinib also suppresses cyclin-dependent kinase 2 (Cdk2) activity in breast cancer cells (IC50 = 4.6 µM) and JAK2 mutant JAK2V617F positive hematopoietic progenitor cells (IC50 = 5 µM), which is associated with polycythemia vera, idiopathic myelofibrosis, and essential thrombocythemia. Formulations containing erlotinib have been used to treat certain forms of cancer, including non-small cell lung cancer.

Chemical Properties

Cas No. 183321-86-0 SDF
别名 2-[[4-[(3-乙炔基苯基)氨基]-7-(2-甲氧基乙氧基)-6-喹唑啉基]氧基]乙醇,OSI-420 free base; CP-373420
Canonical SMILES C#CC1=CC(NC2=NC=NC3=CC(OCCOC)=C(OCCO)C=C32)=CC=C1
分子式 C21H21N3O4 分子量 379.4
溶解度 DMF: 50 mg/ml,DMF:PBS (pH 7.2) (1:9): 0.1 mg/ml,DMSO: 25 mg/ml,Ethanol: 0.25 mg/ml 储存条件 Store at -20°C
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1 mg 5 mg 10 mg
1 mM 2.6357 mL 13.1787 mL 26.3574 mL
5 mM 0.5271 mL 2.6357 mL 5.2715 mL
10 mM 0.2636 mL 1.3179 mL 2.6357 mL
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Research Update

Simultaneous Determination of Celecoxib, Erlotinib, and its Metabolite Desmethyl-Erlotinib (OSI-420) in Rat Plasma by Liquid chromatography/Tandem Mass Spectrometry with Positive/Negative Ion-Switching Electrospray Ionisation

Sci Pharm 2012 Jul-Sep;80(3):633-46.PMID:23008811DOI:10.3797/scipharm.1205-09.

A new method for the simultaneous determination of celecoxib, erlotinib, and its active metabolite desmethyl-erlotinib (OSI-420) in rat plasma, by liquid chromatography/tandem mass spectrometry with positive/negative ion-switching electrospray ionization mode, was developed and validated. Protein precipitation with methanol was selected as the method for preparing the samples. The analytes were separated on a reverse-phase C(18) column (50mm×4.6mm i.d., 3μ) using methanol: 2 mM ammonium acetate buffer, and pH 4.0 as the mobile phase at a flow rate 0.8 mL/min. Sitagliptin and Efervirenz were used as the internal standards for quantification. The determination was carried out on a Theremo Finnigan Quantam ultra triple-quadrupole mass spectrometer, operated in selected reaction monitoring (SRM) mode using the following transitions monitored simultaneously: positive m/z 394.5→278.1 for erlotinib, m/z 380.3→278.1 for Desmethyl Erlotinib (OSI-420), and negative m/z -380.1→ -316.3 for celecoxib. The limits of quantification (LOQs) were 1.5 ng/mL for Celecoxib, erlotinib, and OSI-420. Within- and between-day accuracy and precision of the validated method were within the acceptable limits of < 15% at all concentrations. The quantitation method was successfully applied for the simultaneous estimation of celecoxib, erlotinib, and Desmethyl Erlotinib in a pharmacokinetic study in Wistar rats.

Tyrosine kinase inhibitor conjugated quantum dots for non-small cell lung cancer (NSCLC) treatment

Eur J Pharm Sci 2019 May 15;133:145-159.PMID:30946965DOI:10.1016/j.ejps.2019.03.026.

Non-small cell lung cancer is a major sub-type of lung cancer that is associated with a poor diagnosis resulting in poor therapy for the disorder. In order to achieve a better prognosis, innovative multi-functional systems need to be developed which will aide in diagnosis as well as therapy for the disorder. One such multi-functional delivery system fabricated is Quantum Dots (QDs). QDs are photo-luminescent inorganic nanoparticles utilized for tumor detection, preclinically. Erlotinib hydrochloride, a tyrosine kinase inhibitor, is a first-generation drug developed to treat NSCLC. Its active metabolite, Desmethyl Erlotinib (OSI-420), exhibits similar anticancer activity as erlotinib. OSI-420 was conjugated to QDs to fabricate a delivery system and was then characterized by FT-IR, H NMR, UV-VIS, particle size, zeta potential, fluorescence spectroscopy and TEM. Drug loading was estimated using UV-VIS spectroscopy (52.2 ± 7.5%). A concentration-dependent release of OSI-420 was achieved using esterase enzymes, which was further confirmed using LC-MS. A cellular uptake study revealed the internalization potential of QDs and QD-OSI 420. A cellular recovery study was performed to confirm the internalization potential. Cell viability studies revealed that QD-OSI 420 conjugates had significantly better efficacy than pure drugs in all tested cell lines. QD conjugated OSI-420 demonstrated an IC60 of 2.5 μM in erlotinib-resistant A549 cell lines, where erlotinib or OSI-420 alone could not exhibit 60% inhibition when evaluated up to 20 μM. Similar cytotoxic enhancement of erlotinib was seen with QD-OSI 420 in other NSCLC cell lines as well. These results were strengthened by 3D-SCC model of A549 which revealed that QD-OSI 420 was significantly better in reducing in-vitro 3D tumor volume, as compared to pure drugs. This study, being one of its kind, explores the feasibility of conjugating OSI-420 with QDs as an alternative to traditional anti-cancer therapy, by improving intracellular drug delivery.