Lapatinib Ditosylate (GW-572016, Tykerb)

This product is for research use only, not for human use. We do not sell to patients.

For small sizes, please check our retail website as below: www.invivochem.com

Size	Price	Stock
5g	$450	Check With Us
10g	$650	Check With Us
20g	$975	Check With Us

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Cat #: V0535 CAS #: 388082-77-7 Purity ≥ 99%

Description: Lapatinib Ditosylate (formerly GW-572016, GW572016; trade names Tykerb and Tyverb) is an orally bioavailable medication acting as an EGFR (epidermal growth factor receptor) and ErbB2 inhibitor with antineoplastic activity.

References: Rusnak DW, et al. The effects of the novel, reversible epidermal growth factor receptor/ErbB-2 tyrosine kinase inhibitor, GW2016, on the growth of human normal and tumor-derived cell lines in vitro and in vivo. Mol Cancer Ther. 2001 Dec;1(2):85-94

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Physicochemical and Storage Information
Protocol
Related Biological Data
Stock Solution Preparation
Quality Control Documentation

Molecular Weight (MW)	925.46
Molecular Formula	C29H26ClFN4O4S.2C7H8O3S
CAS No.	388082-77-7
Storage	-20℃ for 3 years in powder formr
Storage	-80℃ for 2 years in solvent
Solubility In Vitro	DMSO: 100 mg/mL (108.1 mM)r
	Water: <1 mg/mLr
	Ethanol: <1 mg/mL
Solubility In Vivo	2% DMSO+30% PEG 300+ddH2O: 10 mg/mL
SMILES Code	O=S(CCNCC1=CC=C(C2=CC3=C(NC4=CC=C(OCC5=CC=CC(F)=C5)C(Cl)=C4)N=CN=C3C=C2)O1)(C)=O.OS(=O)(C6=CC=C(C)C=C6)=O.OS(=O)(C7=CC=C(C)C=C7)=O
Synonyms	GSK 572016; Trade name: Tykerb.GW2016; GSK 572016 ditosylate; GW-2016 ditosylate; GSK-572016 ditosylate; GSK-572016; GW-2016; GSK572016 ditosylate; GW2016 ditosylate; GW 2016; Lapatinib ditosylate; SK572016; GW 2016; Lapatinib;

Protocol	In Vitro	Lapatinib (GW2016; 1-10 µM; 72 hours; HN5 cells) treatment results in induces G1 arrest. Lapatinib (GW2016; 72 hours; HN5, A-43, BT474, N87, and CaLu-3 cells) treatment has a selective inhibition of the proliferation of human tumor cell lines. Lapatinib (GW2016; 0.03-10 µM; 6 hours; BT474 and HN5 cells) treatment inhibits receptor autophosphorylation of EGFR and ErbB-2 in a dose-responsive manner. Phosphorylation of serine 473 of AKT was inhibited by GW2016 in a dose-dependent manner.
Protocol	In Vivo	Lapatinib (GW2016; 30-100 mg/kg; oral administration; twice daily; for 21 days; CD-1 nude female mice) treatment inhibits tumor xenograft growth of the HN5 cells in a dose-responsive manner at 30 and 100 mg/kg, with complete inhibition of tumor growth at the higher dose.

These protocols are for reference only. InvivoChem does not independently validate these methods.

Preparing Stock Solutions

Solvent volume to be added	Mass (the weight of a compound)
Mother liquor concentration	1mg	5mg	10mg	20mg
1mM	1.0805 mL	5.4027 mL	10.8054 mL	21.6109 mL
5mM	0.2161 mL	1.0805 mL	2.1611 mL	4.3222 mL
10mM	0.1081 mL	0.5403 mL	1.0805 mL	2.1611 mL
20mM	0.0540 mL	0.2701 mL	0.5403 mL	1.0805 mL

The molarity calculator equation

Mass(g) = Concentration(mol/L) × Volume(L) × Molecular Weight(g/mol)

Mass

Concentration

Volume

Molecular Weight*

The dilution calculator equation

Concentration_(start) × Volume_(start) = Concentration_(final) × Volume_(final)

This equation is commonly abbreviated as: C₁ V₁ = C₂ V₂

Concentration_(start)

Volume_(start)

Concentration_(final)

Volume_(final)

Step One: Enter information below

Dosage mg/kg Average weight of animals g Dosing volume per animal µL Number of animals

Step Two: Enter the in vivo formulation

%DMSO + % + %Tween 80 + %ddH₂O

Calculation Results:

Working concentration: mg/ml;

Method for preparing DMSO master liquid: mg drug pre-dissolved in µL DMSO(Master liquid concentration mg/mL) ,Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug.

Method for preparing in vivo formulation: Take µL DMSO master liquid, next add µL PEG300, mix and clarify, next add µL Tween 80,mix and clarify, next add µL ddH₂O,mix and clarify.

Note:

(1) Please be sure that the solution is clear before the addition of next solvent. Dissolution methods like vortex, ultrasound or warming and heat may be used to aid dissolving.
(2) Be sure to add the solvent(s) in order.