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Merck
CN

SML0107

Pemirolast potassium

≥98% (HPLC)

Synonym(s):

9-Methyl-3-(1H-tetrazol-5-yl)-4H-pyrido[1,2-a]pyrimidin-4-one potassium salt; BMY 26517

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About This Item

Empirical Formula (Hill Notation):
C10H7N6O·K
CAS Number:
Molecular Weight:
266.30
UNSPSC Code:
12352200
PubChem Substance ID:
NACRES:
NA.77
Assay:
≥98% (HPLC)
Form:
powder
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SMILES string

[K+].CC1=CC=CN2C(=O)C(=CN=C12)c3nnn[n-]3

InChI

1S/C10H7N6O.K/c1-6-3-2-4-16-9(6)11-5-7(10(16)17)8-12-14-15-13-8;/h2-5H,1H3;/q-1;+1

InChI key

NMMVKSMGBDRONO-UHFFFAOYSA-N

assay

≥98% (HPLC)

form

powder

color

light yellow to green-yellow

solubility

H2O: ≥18 mg/mL

originator

Bristol-Myers Squibb

storage temp.

2-8°C

Biochem/physiol Actions

Pemirolast potassium is a histamine H1 antagonist and mast cell stabilizer that acts as an antiallergic agent. It Inhibits chemical mediator release from tissue mast cells and has recently also been shown to inhibit the release of peptides including substance P, neurokinin (NK) A, and calcitonin gene-related peptide (CGRP) from sensory nerves. It has been used for the treatment of allergic conjunctivitis prophylaxis of for pulmonary hypersensitivity reactions to drugs such as paclitaxel
Pemirolast potassium is a histamine H1 antagonist and mast cell stabilizer; Inhibitor of chemical mediator release from tissue mast cells; antiallergic agent

Features and Benefits

This compound was developed by Bristol-Myers Squibb. To browse the list of other pharma-developed compounds and Approved Drugs/Drug Candidates, click here.

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hcodes

Hazard Classifications

Acute Tox. 4 Oral

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

Regulatory Information

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M Teresa Magone et al.
Cornea, 25(3), 364-367 (2006-04-25)
To report a case of peripheral interstitial keratitis in a patient with mastocytosis. Clinical case description and immunohistologic examination of biopsied ocular tissue. A 22-year-old woman with biopsy-proven urticaria pigmentosa, a subset of mastocytosis, presented with an active peripheral interstitial
Amber M Young et al.
Journal of pharmaceutical sciences, 95(4), 717-725 (2006-02-25)
A tetrazole ring is often used in drug discovery as a replacement for the carboxylic acid group. Previous work indicates that compounds containing a tetrazole moiety show asymmetric permeability in Caco-2 cells characteristic of an efflux transporter substrate. The aim
Yoshinori Itoh et al.
Neuropharmacology, 46(6), 888-894 (2004-03-23)
The effects of anti-allergic agents on the hypersensitivity reactions to paclitaxel, an anti-cancer agent, were examined in rats. Intravenous injection of paclitaxel (15 mg/kg) caused a marked extravasation of plasma protein in lungs and a transient decrease in arterial partial
N Miyazawa et al.
Journal of cardiovascular pharmacology, 30(2), 157-162 (1997-08-01)
We previously reported that tranilast, an antiallergic agent, reduced intimal thickening after endothelial injury in rats. In this study, to verify whether or not antiallergic agents inhibit intimal thickening, we investigated the effect of pemirolast on intimal thickening after endothelial
H Ohsawa et al.
American heart journal, 136(6), 1081-1087 (1998-12-08)
We recently confirmed that pemirolast potassium, an antiallergic agent, markedly inhibits migration and proliferation of vascular smooth muscle cells. It has also been reported that pemirolast inhibits intimal hyperplasia in animal experiments. To elucidate the preventive effects of pemirolast on

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