p-Ethynylphenylalanine hydrochloride

• CAT Number: I045047
• CAS Number: 188640-63-3
• Molecular Formula: C11H12ClNO2
• Molecular Weight: 225.67
• Purity: ≥95%

p-Ethynylphenylalanine hydrochloride (4-Ethynyl-L-phenylalanine hydrochloride) is a potent, selective, reversible and competitive inhibitor of tryptophan hydroxylase (TPH), with a Ki of 32.6 μM[1]. p-Ethynylphenylalanine (hydrochloride) is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.
p-Ethynylphenylalanine hydrochloride selectively and reversibly inhibits the biosynthesis of serotonin[1].?
p-Ethynylphenylalanine hydrochloride has a low affinity for various recombinant 5-HT receptors (5-HT1, 5-HT2, 5-HT4, 5-HT5, 5-HT6, and 5-HT7)[1].
p-Ethynylphenylalanine hydrochloride (30 mg/kg; i.p.) decreases in 5-HT and 5-HIAA levels in the rat midbrain but not in tissue[1].?
p-Ethynylphenylalanine hydrochloride does not inhibit the aromatic amino acid decarboxylase[1].

Reference

[1]. Stokes AH, et al. p-ethynylphenylalanine: a potent inhibitor of tryptophan hydroxylase. J Neurochem. 2000 May;74(5):2067-73.
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