BQ-123

Cas No.:	136553-81-6
Chemical Name:	Cyclo(D-a-aspartyl-L-prolyl-D-valyl-L-leucyl-D-tryptophyl)
Synonyms:	Cyclo(D-a-aspartyl-L-prolyl-D-valyl-L-leucyl-D-tryptophyl);BQ-123;C: DTRP-DASP-PRO-DVAL-LEU;Cyclo(-D-Trp-D-Asp-Pro-D-Val-Leu);BQ 123;BQ-123.Sodium Salt;BQ-518;D-TRP-D-ASP-PRO-D-VAL-LEU;M.W. 610.70 C31H42N6O7;BQ-123 SODIUM SALT
SMILES:	O=C(N[C@](C(N(CCC1)[C@]1([H])C2=O)=O)([H])CC(O)=O)[C@H](NC([C@@H](NC([C@H](N2)C(C)C)=O)CC(C)C)=O)CC3=CNC4=CC=CC=C34
Formula:	C31H42N6O7
M.Wt:	610.70118
Purity:	>98%
Sotrage:	2 years -20°C Powder, 2 weeks 4°C in DMSO, 6 months -80°C in DMSO

Description:

BQ-123 is an ETA endothelin receptor antagonist (Ki values are 1.4 and 1500 nM at ETA and ETB receptors respectively) . 1) Reduces ischemia-induced ventricular arrhythmias in a rat model.2) BQ-123 prevents LPS-induced preterm birth in mice via the induction of uterine and placental IL-10.3) The reference for animal injections is 6.7 mg/kg. 4) BQ-123 decreased IL-1β and TNFα in the placenta while also decreasing transcription of ET-1 in the uterus.

References:

[1]. Olgun NS et al. BQ-123 prevents LPS-induced preterm birth in mice via the induction of uterine and placental IL-10. Toxicol Appl Pharmacol, 2015 Feb 1;282(3):275-84. [2]. Kanashiro A et al. Cytokines, but not corticotropin-releasing factor and endothelin-1, participate centrally in the febrile response in zymosan-induced arthritis in rats. Brain Res, 2015 Jun 12, 1610:12-9. [3]. Erdogan H et al. The protective effects of endothelin-A receptor antagonist BQ-123 in pentylenetetrazole-induced seizure in rats. Hum Exp Toxicol, 2014 Oct, 33(10):1008-16.