L-368,899_product_DataBase

Bioactivity	L-368,899 is an orally active and selective OT (oxytocin ) receptor antagonist, with IC50s of 8.9 and 26 nM for uterus of rat and human, respectively. L-368,899 can cross the blood-brain barrier (BBB). L-368,899 inhibits oxytocin-stimulated uterine contractions in rats and can be used in study of preterm labor[1][2][3].
Target	IC50: 8.9 nM (rat uterus), 26 nM (human uterus).
In Vivo	L-368,899 (0.1, 0.3, 1 mg/kg; infused i.v.; single) shows a dose-related antagonism of OT-stimulated uterine contractions with an AD50 value of 0.35 mg/kg in vivo[1].L-368,899 (3, 10, 30 mg/kg; i.d.; single) inhibits the contractile effects of OT (AD50= 7 mg/kg) with a long (>4 h) duration of action in vivo (AD50: the dose of L-368,899 required to reduce the response to OT by 50%)[1].L-368,899 (10 mg/kg, p.o.; single) shows bioavailability (AUC 0-6 h) of 35%[1].L-368,899 (0.54, 1.8, 5.4 mg/kg; i.v.; single) reduces both oxytocin-induced and endogenous increases in plasma PGFM concentration[2]. Animal Model:
Name	L-368,899
CAS	148927-60-0
Formula	C26H42N4O5S2
Molar Mass	554.77
Transport	Room temperature in continental US; may vary elsewhere.
Storage	Please store the product under the recommended conditions in the Certificate of Analysis.
Reference	[1]. Pettibone D J, et al. L‐368,899, a potent orally active oxytocin antagonist for potential use in preterm labor[J]. Drug development research, 1993, 30(3): 129-142. [2]. Mann GE, et al. Attenuation of PGF2alpha release in ewes infused with the oxytocin antagonist L-368,899. Domest Anim Endocrinol. 2003 Oct;25(3):255-62. [3]. Williams PD, et al. 1-((7,7-Dimethyl-2(S)-(2(S)-amino-4-(methylsulfonyl)butyramido)bicyclo [2.2.1]-heptan-1(S)-yl)methyl)sulfonyl)-4-(2-methylphenyl)piperaz ine (L-368,899): an orally bioavailable, non-peptide oxytocin antagonist with potential utility fo

PeptideDB

L-368,899

CAS: 148927-60-0 F: C26H42N4O5S2 W: 554.77