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239821

Sigma-Aldrich

CXCR4 Antagonist II

The CXCR4 Antagonist II, also referenced under CAS 1258011-83-4, controls the biological activity of CXCR4. This small molecule/inhibitor is primarily used for Cell Signaling applications.

Synonym(s):

CXCR4 Antagonist II, 1,3-Dicyclohexyl-2-(3-methyl-6,6-dimethyl-5,6-dihydroimidazo[1,2-b]thiazole)-2-thiopseudourea, HCl, Fusin Antagonist II, IT1t

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About This Item

Empirical Formula (Hill Notation):
C21H34N4S2 · xHCl
CAS Number:
1258011-83-4
Molecular Weight:
406.65 (free base basis)
UNSPSC Code:
12352200

Quality Level

100

assay

≥95% (HPLC)

form

solid

manufacturer/tradename

Calbiochem®

storage condition

OK to freeze
desiccated (hygroscopic)
protect from light

color

white

solubility

DMSO: 50 mg/mL

shipped in

ambient

storage temp.

−20°C

General description

A thiopseudourea compound that acts as a selective and highly potent CXCR4/Fusin antagonist (IC50 = 1.1 nM against SDF-1/CXCL12-induced Ca2+ mobilization in CEM cells) and effectively targets CXCR4-mediated binding of both CXCL12 (IC50 = 8 and 11 nM in competitive binding assays using human CEM and rat IR983F membrane, respectively) and HIV gp120 (IC50 = 7 nM in HIV attachment assays). Shown to be orally available in rat with good in vivo pharmacokinetics (32% availability, tmax = 0.5 h, Cmax= 18 ng/ml, t1/2 = 7.6 h, based on an oral dose of 1 mg/kg). Comparing to AMD3100 (Cat. No. 239820), CXCR4 Antagonist II is ~30-times more potent as a CXCR4-CXCL12 interaction blocker, while being ~2-fold less potent in blocking gp120-mediated HIV attachment.
A thiopseudourea compound that acts as a selective and highly potent CXCR4/Fusin antagonist (IC50 = 1.1 nM against SDF-1/CXCL12-induced Ca2+ mobilization in CEM cells) and effectively targets CXCR4-mediated binding of both CXCL12 (IC50 = 8 and 11 nM in competitive binding assays using human CEM and rat IR983F membrane, respectively) and HIV gp120 (IC50 = 7 nM in HIV attachment assays). Shown to be orally available in rat with good in vivo pharmacokinetics (32% availability, tmax = 0.5 h, Cmax= 18 ng/ml, t1/2 = 7.6 h, based on an oral dose of 1 mg/kg). Comparing to AMD3100 (Cat. No. 239820), CXCR4 Antagonist II is ~30-times more potent as a CXCR4-CXCL12 interaction blocker, while being ~2-fold less potent in blocking gp120-mediated HIV attachment.

Packaging

Packaged under inert gas

Warning

Toxicity: Standard Handling (A)

Reconstitution

Following reconstitution, aliquot and freeze (-20°C). Stock solutions are stable for up to 3 months at -20°C.

Other Notes

Wu, B., et al. 2010. Science330, 1066.
Thoma, G., et al. 2008. J. Med. Chem.51, 7915.

Legal Information

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

Storage Class

11 - Combustible Solids

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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