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1370280

USP

Loratadine Related Compound A

Name: Loratadine Related Compound A
Brand: USP

United States Pharmacopeia (USP) Reference Standard

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Synonym(s):

Desloratadine, 8-Chloro-6,11-dihydro-11-(4-piperidinylidene)-5H- benzo[5,6]cyclohepta[1,2,b]pyridine, Clarinex^®, NSC 675447

Empirical Formula (Hill Notation):

C₁₉H₁₉ClN₂

CAS Number:

100643-71-8

Molecular Weight:

310.82

MDL number:

MFCD00871949

PubChem Substance ID:

329750257

NACRES:

NA.24

grade

pharmaceutical primary standard

API family

loratadine

manufacturer/tradename

USP

application(s)

pharmaceutical (small molecule)

format

neat

SMILES string

Clc1ccc2c(CCc3cccnc3\C2=C4\CCNCC4)c1

InChI

1S/C19H19ClN2/c20-16-5-6-17-15(12-16)4-3-14-2-1-9-22-19(14)18(17)13-7-10-21-11-8-13/h1-2,5-6,9,12,21H,3-4,7-8,10-11H2

InChI key

JAUOIFJMECXRGI-UHFFFAOYSA-N

Gene Information

human ... HRH1(3269)

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Related Categories

Analytical Reference Standards

Pharmacopeia & Metrological Institute Standards

General description

This product is provided as delivered and specified by the issuing Pharmacopoeia. All information provided in support of this product, including SDS and any product information leaflets have been developed and issued under the Authority of the issuing Pharmacopoeia.For further information and support please go to the website of the issuing Pharmacopoeia.

Application

Loratadine Related Compound A USP reference standard, intended for use in specified quality tests and assays as specified in the USP compendia.
Also, for use with USP monographs such as:

Loratadine Orally Disintegrating Tablets
Loratadine Chewable Tablets
Loratadine Capsules

Biochem/physiol Actions

Desloratadine is a selective and nonsedating histamine H1 receptor antagonist, an active metabolite of loratadine (Claritin), used to relieve hay fever and allergy symptoms with less drowsiness than other antihistamines; does not significantly inhibits cardiac K+ channels at clinically achievable blood levels. Free from antimuscarinic/anticholinergic effects.

Analysis Note

These products are for test and assay use only. They are not meant for administration to humans or animals and cannot be used to diagnose, treat, or cure diseases of any kind.

Other Notes

Sales restrictions may apply.

Legal Information

Clarinex is a registered trademark of Schering Corp.

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Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

390.2 °F - Pensky-Martens closed cup

Flash Point(C)

199 °C - Pensky-Martens closed cup

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A novel model of IgE-mediated passive pulmonary anaphylaxis in rats.

Eva Wex et al.

PloS one, 9(12), e116166-e116166 (2014-12-30)

Mast cells are central effector cells in allergic asthma and are augmented in the airways of asthma patients. Attenuating mast cell degranulation and with it the early asthmatic response is an important intervention point to inhibit bronchoconstriction, plasma exudation and

A long-standing mystery solved: the formation of 3-hydroxydesloratadine is catalyzed by CYP2C8 but prior glucuronidation of desloratadine by UDP-glucuronosyltransferase 2B10 is an obligatory requirement.

Faraz Kazmi et al.

Drug metabolism and disposition: the biological fate of chemicals, 43(4), 523-533 (2015-01-18)

Desloratadine (Clarinex), the major active metabolite of loratadine (Claritin), is a nonsedating long-lasting antihistamine that is widely used for the treatment of allergic rhinitis and chronic idiopathic urticaria. For over 20 years, it has remained a mystery as to which

Differential thermodynamic driving force of first- and second-generation antihistamines to determine their binding affinity for human H1 receptors.

Shigeru Hishinuma et al.

Biochemical pharmacology, 91(2), 231-241 (2014-07-30)

Differential binding sites for first- and second-generation antihistamines were indicated on the basis of the crystal structure of human histamine H1 receptors. In this study, we evaluated differences between the thermodynamic driving forces of first- and second-generation antihistamines for human

Development and validation of an ultra-performance liquid chromatography method for simultaneous analysis of 20 antihistaminics in dietary supplements.

Jung Yeon Kim et al.

Biomedical chromatography : BMC, 29(3), 465-474 (2014-08-01)

The purpose of this study was to develop and validate an ultra-performance liquid chromatography method for simultaneous analysis of 20 antihistamines (illegal additives) in dietary supplements. The limits of detection and quantitation of the method ranged from 1.5 to 2.5

Utility of cerebrospinal fluid drug concentration as a surrogate for unbound brain concentration in nonhuman primates.

Yoko Nagaya et al.

Drug metabolism and pharmacokinetics, 29(5), 419-426 (2014-05-09)

In central nervous system drug discovery, cerebrospinal fluid (CSF) drug concentration (C(CSF)) has been widely used as a surrogate for unbound brain concentrations (C(u,brain)). However, previous rodent studies demonstrated that when drugs undergo active efflux by transporters, such as P-glycoprotein

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