C5172
(±)-Chlorpheniramine maleate salt
Sigma Reference Standard
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About This Item
Empirical Formula (Hill Notation):
C16H19ClN2 · C4H4O4
CAS Number:
Molecular Weight:
390.86
UNSPSC Code:
12352200
PubChem Substance ID:
EC Number:
204-037-5
MDL number:
packaging
vial of 250 mg
mp
130-135 °C (lit.)
SMILES string
CN(C)CCC(C1=CC=C(Cl)C=C1)C2=NC=CC=C2.O=C(/C=C\C(O)=O)O
InChI
1S/C16H19ClN2.C4H4O4/c1-19(2)12-10-15(16-5-3-4-11-18-16)13-6-8-14(17)9-7-13;5-3(6)1-2-4(7)8/h3-9,11,15H,10,12H2,1-2H3;1-2H,(H,5,6)(H,7,8)/b;2-1-
InChI key
DBAKFASWICGISY-BTJKTKAUSA-N
Biochem/physiol Actions
H1 Histamine receptor antagonist.
Packaging
Supplied in amber screw-cap vials
signalword
Warning
hcodes
pcodes
Hazard Classifications
Acute Tox. 4 Oral
Storage Class
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges
Regulatory Information
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V Alagarsamy et al.
European journal of medicinal chemistry, 43(11), 2331-2337 (2007-11-23)
A series of novel 1-substituted-4-(2-methylphenyl)-4H-[1,2,4]triazolo[4,3-a]quinazolin-5-ones were synthesized by the cyclization of 2-hydrazino-3-(2-methylphenyl)-3H-quinazolin-4-one with various one carbon donors. The starting material 2-hydrazino-3-(2-methylphenyl)-3H-quinazolin-4-one was synthesized from 2-methyl aniline by a novel innovative route. The title compounds were tested for their in vivo
Veerachamy Alagarsamy et al.
Bioorganic & medicinal chemistry letters, 15(7), 1877-1880 (2005-03-23)
A series of novel 1-substituted-4-phenyl-1,2,4-triazolo[4,3-a]quinazolin-5(4H)-ones 7 were synthesized by the cyclization of 2-hydrazino-3-phenylquinazolin-4(3H)-one 6 with various one carbon donors. The starting material 2-hydrazino-3-phenylquinazolin-4(3H)-one 6, was synthesized from aniline 1 by a novel innovative route. When tested for their in vivo
Eef L Theunissen et al.
British journal of clinical pharmacology, 61(1), 79-86 (2006-01-05)
Previous studies have demonstrated that the antihistamines mequitazine, cetirizine and dexchlorpheniramine produce mild sedation after single doses. It is unknown, however, whether acute sedation persists after repeated dosing. Therefore, this study assessed the effects of repeated dosing of these antihistamines
P van Ruitenbeek et al.
Journal of psychopharmacology (Oxford, England), 22(6), 663-672 (2008-01-23)
Results from recent animal studies suggest an important role for histamine in memory functioning. Histaminergic drugs might prove beneficial for people suffering from memory impairment. To determine if histamine is involved in memory functioning this study evaluates the effects of
E L Theunissen et al.
Clinical and experimental allergy : journal of the British Society for Allergy and Clinical Immunology, 34(2), 250-258 (2004-02-28)
Mequitazine is a so-called 'non-sedative' second-generation antihistamine even though it has never been firmly established that this drug's sedative potential actually differs from that of the 'sedative' first-generation antihistamines. The present study compares the sedative effects of three doses of
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