XL888

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

XL888
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Size Price Stock
100mg$1080Check With Us
250mg$1700Check With Us
500mg$2550Check With Us

Cat #: V0887 CAS #: 1149705-71-4 Purity ≥ 98%

Description: XL888 (XL-888; XL 888) is an orally bioavailable, ATP-competitive inhibitor of HSP90 (Heat Shock Protein 90) with potential antitumor activity.

References: Haarberg HE, et al. Inhibition of Wee1, AKT, and CDK4 underlies the efficacy of the HSP90 inhibitor XL888 in an in vivo model of NRAS-mutant melanoma. Mol Cancer Ther. 2013 Jun;12(6):901-12.

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Molecular Weight (MW)503.64
Molecular FormulaC29H37N5O3
CAS No.1149705-71-4
Storage-20℃ for 3 years in powder formr
-80℃ for 2 years in solvent
Solubility In VitroDMSO: 100 mg/mL (198.6 mM)r
Water: <1 mg/mLr
Ethanol: <1 mg/mL
Solubility In Vivo30% PEG400+0.5% Tween80+5% propylene glycol: 30mg/mL
SMILES CodeO=C(NC1=CC=C(CCN2CC3=C(C=C(OC)C(OC)=C3)CC2)C=C1)C4=CC=CC(/C=C(C(N(C)/C5=CC6=CC=CC=C6)=O)NC5=O)=C
SynonymsXL-888; XL 888; XL888;
ProtocolIn VitroXL888 is a heat shock protein-90 (HSP90) inhibitor. Treatment with XL888 leads to dose dependent decreases in the growth of all the cell lines with no significant difference in IC50 values observed between the naive and resistance pairs of cell lines (t=0.25, p=0.82). Treatment of all of the vemurafenib resistant cell lines with XL888 (300 nM) induces high levels (>66%) of apoptosis, caspase-3 cleavage and loss of mitochondrial membrane potential (TMRM) in every cell line tested. Treatment of cell lines that are naïve, intrinsically resistant and with acquired vemurafenib resistance with XL888 (300 nM) leads to robust time-dependent increases in the expression of HSP70 isoform 1 (HSP71).
In VivoTreatment of the established M245 tumors with XL888 (125 mg/kg 3× week) leads to a significant slowing of tumor growth (P=0.017) without any effect upon animal weights. Analysis of xenograft specimens by LC-MRM shows a marked increase in intratumoral HSP70 expression following XL888 treatment.
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 1mg5mg10mg20mg
1mM1.9855 mL9.9277 mL19.8555 mL39.7109 mL
5mM0.3971 mL1.9855 mL3.9711 mL7.9422 mL
10mM0.1986 mL0.9928 mL1.9855 mL3.9711 mL
20mM0.0993 mL0.4964 mL0.9928 mL1.9855 mL
Quality Control Documentation
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)
C1
×
Volume(start)
V1
=
Concentration(final)
C2
×
Volume(final)
V2
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.