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Description
Overview
A tertiary sulfonamide-based compound that acts as a high-affinity oxytocin (OT) receptor-selective antagonist (Ki = 650 and 670 pM in 125I-OVTA-competitive binding assays using human and rat OT-R, respectively), while displaying 65-, 245-, and 23,000-fold reduced affinity, respectively, toward human vassopressin receptors V1a, V2, and V1b. Shown to effectively inhibit OT- (10 nM) induced Ca2+ mobilization in hOT-R-expressing HEK293-EBNA cells (IC50 = 14 nM) in vitro and OT-stimulated uterine contractions in rats (1.4 -10 mg/kg p.o. or 30 mg/kg p.o.) in vivo. Product is supplied as a fumarate salt for enhanced aqueous solubility (20 and 10 mg/ml, respectively, in water and HBSS).
Catalogue Number
500106
Brand Family
Calbiochem®
Synonyms
OT-R Antagonist, 3-(4-(N-(4-chlorophenyl)-N-(2-oxo-2-(2-(2-oxoindolin-3-ylidene)hydrazinyl)ethyl)sulfamoyl)phenyl)-N-(3-(dimethylamino)propyl)propanamide, fumarate salt
References
References
Quattropani, A., et al. 2005. J Med Chem.48, 7882.
Shipped at Ambient Temperature or with Blue Ice or with Dry Ice
Toxicity
Standard Handling
Storage
+2°C to +8°C
Protect from Light
Protect from light
Do not freeze
Ok to freeze
Special Instructions
Following reconstitution, aliquot and freeze (-20°C). Stock solutions are stable for up to 3 months at -20°C.
Packaging Information
Packaged under inert gas
Packaged under inert gas
Transport Information
Supplemental Information
Specifications
Documentation
References
Reference overview
Quattropani, A., et al. 2005. J Med Chem.48, 7882.
Data Sheet
Note that this data sheet is not lot-specific and is representative of the current specifications for this product. Please consult the vial label and the certificate of analysis for information on specific lots. Also note that shipping conditions may differ from storage conditions.
Revision
11-March-2013 JSW
Synonyms
OT-R Antagonist, 3-(4-(N-(4-chlorophenyl)-N-(2-oxo-2-(2-(2-oxoindolin-3-ylidene)hydrazinyl)ethyl)sulfamoyl)phenyl)-N-(3-(dimethylamino)propyl)propanamide, fumarate salt
Description
A tertiary sulfonamide-based compound that acts as a high-affinity oxytocin (OT) receptor-selective antagonist (Ki = 650 and 670 pM in 125I-OVTA-competitive binding assays using human and rat OT-R, respectively) and effectively inhibits OT- (10 nM) induced Ca2+ mobilization in hOT-R-expressing HEK293-EBNA cells (IC50 = 14 nM), displaying 65-, 245-, and 23,000-fold reduced affinity, respectively, toward human vassopressin receptors V1a (in 125I-LVA-competitive V1a binding assays), V2, and V1b (in [3H]AVP-competitive binding assays). Shown to effectively block OT-stimulated uterine contractions in non-pregnant rats (by 50% and 72% via i.p. dose of 1.4 mg/kg and 10 mg/kg, respectively; max. inhibition = 35% with 30 mg/kg oral dosing), as well as spontaneous uterine contractions in late-term pregnant rats (29% inhibition; 30 mg/kg p.o.) in vivo. Product is supplied as a fumarate salt for enhanced aqueous solubility (20 and 10 mg/ml, respectively, in water and HBSS).
Form
Brown solid
Intert gas (Yes/No)
Packaged under inert gas
Chemical formula
C₃₀H₃₃ClN₆O₅S.C₄H₄O₄
Structure formula
Purity
≥93% by HPLC
Solubility
DMSO (50 mg/ml)
Storage
Protect from light
+2°C to +8°C
Do Not Freeze
Ok to freeze
Special Instructions
Following reconstitution, aliquot and freeze (-20°C). Stock solutions are stable for up to 3 months at -20°C.
Toxicity
Standard Handling
References
Quattropani, A., et al. 2005. J Med Chem.48, 7882.