BQ-788|cas 156161-89-6|Buy|DC Chemicals

Cas No.:	156161-89-6
Chemical Name:	D-Norleucine,N-[[(2R,6S)-2,6-dimethyl-1-piperidinyl]carbonyl]-4-methyl-L-leucyl-1-(methoxycarbonyl)-D-tryptophyl-,sodium salt (1:1)
Synonyms:	BQ-788 SODIUM;BQ789 Sodium Salt;1-ELAIDYLPHOSPHOCHOLINE, >97%;BQ-788 SYNTHETIC >97% ETB ENDOTHELIN REC EPT;N-[N-[N-[(2,6-Dimethyl-1-piperidinyl)carbonyl]-;2,6-Dimethylpiperidinecarbonyl-γ-Methyl-Leu-Nin-(Methoxycarbonyl)-D-Trp-D-Nle;DMpc-gaMMa-MeLeu-D-Trp(1-CO2CH3)-D-Nle.Na (DMpc : cis-2,6-DiMethylpiperidinocarbonyl);N-[(cis-2,6-Dimethyl-1-piperidinyl)carbonyl]-4-methyl-L-leucyl-1-(methoxycarbonyl)-D-tryptophyl-D-norleucinesodiumsalt;N-[N-[N-[(2,6-Dimethyl-1-piperidinyl)carbonyl]-4-methyl-L-leucyl]-1-(methoxycarbonyl)-D-tryptophyl]-D-norleucine sodium salt;N-[N-[N-[(2,6-Dimethyl-1-piperidinyl)carbonyl]-4-methyl-L-leucyl]-1-(methoxycarbonyl)-D-tryptophyl]-D-norleucine sodium salt, 2,6-Dimethylpiperidinecarbonyl-γ-Methyl-Leu-Nin-(Methoxycarbonyl)-D-Trp-D-Nle;BQ-788.Sodium Salt;BQ-788 sodium salt;sodium,(2R)-2-[[(2R)-2-amino-3-(1-methoxycarbonylindol-3-yl)propanoyl]-[(2S)-2-[[(2R,6S)-2,6-dimethylpiperidine-1-carbonyl]amino]-4,4-dimethylpentanoyl]amino]hexanoate;D-Norleucine,N-[[(2R,6S)-2,6-dimethyl-1-piperidinyl]carbonyl]-4-methyl-L-leucyl-1-(methoxycarbonyl)-D-tryptophyl-,sodium salt;D-Norleucine,N-[[(2R,6S)-2,6-dimethyl-1-piperidinyl]carbonyl]-4-methyl-L-leucyl-1-(methoxycarb...;BQ 788 sodium salt;BQ 788;D-Norleucine,N-[[(2R,6S)-2,6-dimethyl-1-piperidinyl]carbonyl]-4-methyl-L-leucyl-1-(methoxycarbonyl)-D-tryptophyl-,sodium salt (1:1)
SMILES:	[Na+].CCCC[C@@H](N(C([C@@H](NC(N1[C@H](C)CCC[C@@H]1C)=O)CC(C)(C)C)=O)C([C@@H](CC1=CN(C(OC)=O)C2=CC=CC=C12)N)=O)C([O-])=O
Formula:	C₃₄H₅₀N₅NaO₇
M.Wt:	663.779880046844
Purity:	>98%
Sotrage:	2 years -20°C Powder, 2 weeks 4°C in DMSO, 6 months -80°C in DMSO

Description:	BQ-788 (sodium salt) is a potent and selective ETB receptor antagonist, inhibiting ET-1 binding to ETB receptors with an IC50 of 1.2 nM in human Girrardi heart cells.
Target:	IC50: 1.2 nM (ETB)
In Vivo:	BQ-788 (3 mg/kg/h, i.v.) completely inhibits a pharmacological dose of ET-1- or sarafotoxin6c (0.5 nmol/kg, i.v.)-induced ETB receptor-mediated depressor, but not pressor responses in conscious rats. Furthermore, BQ-788 markedly increases the plasma concentration of ET-1, which is considered an index of potential ETB receptor blockade in vivo. In Dahl salt-sensitive hypertensive (DS) rats, BQ-788 (3 mg/kg/h, i.v.) increases blood pressure by about 20 mm Hg. It is reported that BQ-788 also inhibits ET-1-induced bronchoconstriction, tumor growth and lipopolysaccharide-induced organfailure[1]. BQ 788 (3 mg/kg) results in an eightfold leftward shift in the ET-1 dose-response curve, suggesting a significant involvement of ETB dilator receptors[2]. Mice are treated with 30 nmol BQ-788 by intraplantar, reduce mechanical hyperalgesia (47% and 42%), thermal hyperalgesia (68% and 76%), oedema (50% and 30%); myeloperoxidase activity (64% and 32%), and overt-pain like behaviours. Additionally, intraplantar treatment with clazosentan or BQ-788 decreases spinal (45% and 41%) and peripheral (47% and 47%) superoxide anion production as well as spinal (47% and 47%) and peripheral (33% and 54%) lipid peroxidation, respectively[3].
In Vitro:	BQ-788 potently and competitively inhibits 125I-labeled ET-1 binding to ETB receptors in human Girrardi heart cells (hGH) with an IC50 of 1.2 nM, but only poorly inhibits the binding to ETA receptors in human neuro-blastoma cell line SK-N-MC cells (IC50, 1300 nM). BQ-788 shows no agonistic activity up to 10 μM and competitively inhibits thevasoconstriction induced by an ETB-selective agonist (pA2, 8.4). BQ-788 also inhibits several bioactivities of ET-1, such as bronchoconstriction, cell proliferation, and clearance of perfused ET-1[1].
References:	[1]. Okada M, et al. BQ-788, a selective endothelin ET(B) receptor antagonist. Cardiovasc Drug Rev. 2002 Winter;20(1):53-66. [2]. Sargent CA, et al. Effect of endothelin antagonists with or without BQ 788 on ET-1 responses in pithed rats. J Cardiovasc Pharmacol. 1995;26 Suppl 3:S216-8. [3]. Fattori V, et al. Differential regulation of oxidative stress and cytokine production by endothelin ETA and ETB receptors in superoxide anion-induced inflammation and pain in mice. J Drug Target. 2016 Oct 5:1-27

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