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Structure of 4457-67-4
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Histamine inhibits the synthesis of IL-2 and γ-IFN in peripheral blood mononuclear cells and lipopolysaccharide-induced synthesis of TNF-α in monocytes via H2 receptor activation. It is a powerful stimulant of gastric secretion, a constrictor of bronchial smooth muscle, a vasodilator, and also a centrally acting neurotransmitter.
1-Bromo-4-methoxybutane serves as a versatile bifunctional building block in synthetic organic chemistry, enabling efficient construction of ether-linked chains and heterocyclic systems. Its terminal bromide facilitates nucleophilic substitution reactions, while the methoxy group provides stability and compatibility with diverse reaction conditions. This compound functions reliably in coupling protocols, ring-forming transformations, and as a precursor to bioactive scaffolds, offering predictable reactivity and straightforward purification for bench-scale applications.
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GHS Pictogram :
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GHS No : GHS07
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Signal Word : Warning
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UN#: N/A
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Class : N/A
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Packing Group : N/A
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Hazard Statements : H302-H315-H319-H335
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Precautionary Statements : P261-P264-P270-P271-P280-P302+P352-P304+P340-P305+P351+P338-P330-P362+P364-P403+P233-P405-P501
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Lot numbers can be found on the outside label of a product: