2. Metabolic Enzyme/Protease
  3. Tryptophan Hydroxylase
  4. p-Ethynylphenylalanine

p-Ethynylphenylalanine  (Synonyms: 4-Ethynyl-L-phenylalanine)

Cat. No.: HY-23460 Purity: 99.93%
SDS COA Handling Instructions

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p-Ethynylphenylalanine (4-Ethynyl-L-phenylalanine) is a potent, selective, reversible and competitive inhibitor of tryptophan hydroxylase (TPH), with a Ki of 32.6 μM. p-Ethynylphenylalanine is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.

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p-Ethynylphenylalanine Chemical Structure

p-Ethynylphenylalanine Chemical Structure

CAS No. : 278605-15-5

Size Price Stock Quantity
Solid + Solvent (Highly Recommended)
10 mM * 1 mL in DMSO
ready for reconstitution
 USD 110 In-stock
Solution
10 mM * 1 mL in DMSO USD 110 In-stock
Solid
50 mg USD 100 In-stock
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Based on 1 publication(s) in Google Scholar

Other Forms of p-Ethynylphenylalanine:

p-Ethynylphenylalanine Related Antibodies

Top Publications Citing Use of Products

1 Publications Citing Use of MCE p-Ethynylphenylalanine

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Description

p-Ethynylphenylalanine (4-Ethynyl-L-phenylalanine) is a potent, selective, reversible and competitive inhibitor of tryptophan hydroxylase (TPH), with a Ki of 32.6 μM[1]. p-Ethynylphenylalanine is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.

IC50 & Target

Ki: 32.6 μM (TPH)[1]
In Vitro

p-Ethynylphenylalanine selectively and reversibly inhibits the biosynthesis of serotonin[1].
? p-Ethynylphenylalanine has a low affinity for various recombinant 5-HT receptors (5-HT1, 5-HT2, 5-HT4, 5-HT5, 5-HT6, and 5-HT7)[1].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

p-Ethynylphenylalanine Related Antibodies
In Vivo

p-Ethynylphenylalanine (30 mg/kg; i.p.) decreases in 5-HT and 5-HIAA levels in the rat midbrain but not in tissue[1].
? p-Ethynylphenylalanine does not inhibit the aromatic amino acid decarboxylase[1].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

Animal Model: Male Sprague-Dawley rats (200 g)[1]
Dosage: 30 mg/kg
Administration: Intraperitoneal injection
Result: Decreased in 5-HT and 5-HIAA levels in the rat midbrain.
Molecular Weight

189.21

Formula

C11H11NO2
CAS No.
Appearance

Solid

Color

Off-white to light yellow

SMILES

N[C@@H](CC1=CC=C(C#C)C=C1)C(O)=O
Shipping

Room temperature in continental US; may vary elsewhere.
Storage
Powder -20°C 3 years
4°C 2 years
In solvent -80°C 6 months
-20°C 1 month
Solvent & Solubility
In Vitro: 

1M NaOH : 240 mg/mL (1268.43 mM; ultrasonic and adjust pH to 11 with NaOH)

1M HCl : 240 mg/mL (1268.43 mM; ultrasonic and adjust pH to 1 with HCl)

DMSO : 2.22 mg/mL (11.73 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 5.2851 mL 26.4257 mL 52.8513 mL
5 mM 1.0570 mL 5.2851 mL 10.5703 mL
View the Complete Stock Solution Preparation Table

* Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month. When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

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Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

Mass
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Concentration
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Volume
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Molecular Weight *

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start)

C1

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Volume (start)

V1

=
Concentration (final)

C2

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Volume (final)

V2

In Vivo Dissolution Calculator
Please enter the basic information of animal experiments:

Dosage

mg/kg

Animal weight
(per animal)

g

Dosing volume
(per animal)

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Number of animals

Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
Calculation results:
Working solution concentration: mg/mL
Purity & Documentation

Purity: 99.93%

SDS (393 KB)

COA (246 KB) RP-HPLC (243 KB)

Handling Instructions (2659 KB)
References

Complete Stock Solution Preparation Table

* Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month. When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

Optional Solvent Concentration Solvent Mass 1 mg 5 mg 10 mg 25 mg
DMSO / 1M NaOH / 1M HCl 1 mM 5.2851 mL 26.4257 mL 52.8513 mL 132.1283 mL
5 mM 1.0570 mL 5.2851 mL 10.5703 mL 26.4257 mL
10 mM 0.5285 mL 2.6426 mL 5.2851 mL 13.2128 mL
1M NaOH / 1M HCl 15 mM 0.3523 mL 1.7617 mL 3.5234 mL 8.8086 mL
20 mM 0.2643 mL 1.3213 mL 2.6426 mL 6.6064 mL
25 mM 0.2114 mL 1.0570 mL 2.1141 mL 5.2851 mL
30 mM 0.1762 mL 0.8809 mL 1.7617 mL 4.4043 mL
40 mM 0.1321 mL 0.6606 mL 1.3213 mL 3.3032 mL
50 mM 0.1057 mL 0.5285 mL 1.0570 mL 2.6426 mL
60 mM 0.0881 mL 0.4404 mL 0.8809 mL 2.2021 mL
80 mM 0.0661 mL 0.3303 mL 0.6606 mL 1.6516 mL
100 mM 0.0529 mL 0.2643 mL 0.5285 mL 1.3213 mL
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p-Ethynylphenylalanine Related Classifications

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  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

Keywords:

p-Ethynylphenylalanine278605-15-54-Ethynyl-L-phenylalanineTryptophan HydroxylasetryptophanhydroxylaseTPHserotonin5-HT5-HIAAInhibitorinhibitorinhibit

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