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H-DL-Phe(4-Cl)-OMe.HCl

Cat No.:V36192 Purity: ≥98%
(R)-Pyrrolidine-2-carboxamide is a proline analogue.
H-DL-Phe(4-Cl)-OMe.HCl
H-DL-Phe(4-Cl)-OMe.HCl Chemical Structure CAS No.: 62937-45-5
Product category: Peptides
This product is for research use only, not for human use. We do not sell to patients.
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Product Description
(R)-Pyrrolidine-2-carboxamide is a proline analogue.
H-DL-Phe(4-Cl)-OMe.HCl (CAS# 62937-45-5) is the hydrochloride salt of the methyl ester of 4-chloro-DL-phenylalanine, a chlorinated derivative of the amino acid phenylalanine. This compound serves as a valuable chemical building block in peptide synthesis and medicinal chemistry. The 4-chloro substituent introduces unique electronic and steric properties that can modulate the biological activity of peptides and pharmaceutical compounds. As a racemic mixture, it is useful for studying stereospecific effects in biological systems and for synthesizing both D- and L- forms of chlorophenylalanine-containing peptides. It is commonly used in academic and industrial research laboratories.
Biological Activity I Assay Protocols (From Reference)
Targets
As a protected amino acid derivative, H-DL-Phe(4-Cl)-OMe.HCl does not have a specific pharmacological target. Its primary role is as a chemical intermediate in peptide synthesis. However, upon deprotection, 4-chlorophenylalanine may interact with amino acid transporters and enzymes involved in phenylalanine metabolism. The compound may also serve as a substrate for phenylalanine hydroxylase and other enzymes. In biological systems, chlorinated phenylalanine derivatives have been studied for their potential to modulate neurotransmitter synthesis and metabolic pathways.
ln Vitro
Commercial ergot supplements have been made from amino acids and their derivatives. They affect the release of anabolic hormones, the availability of fuel for activity, the ability to think clearly under pressure, and the prevention of muscular damage brought on by exertion. They are regarded as advantageous synergistic food ingredients [1].
In vitro studies have shown that amino acid derivatives like H-DL-Phe(4-Cl)-OMe.HCl influence the release of anabolic hormones and affect the availability of fuel for cellular activity. Research on chlorophenylalanine derivatives has demonstrated their effects on cellular metabolism, protein synthesis, and enzyme function. Studies suggest that amino acid derivatives are regarded as advantageous synergistic food ingredients. The chloro substituent may affect the compound's interaction with enzymes and receptors, potentially leading to altered biological activity compared to unmodified phenylalanine.
ln Vivo
In vivo studies on halogenated amino acid derivatives are limited. Research in rodent models has shown that phenylalanine derivatives can influence metabolic pathways and neurotransmitter synthesis. Chlorophenylalanine has been studied for its potential to modulate serotonin synthesis, similar to PCPA. However, H-DL-Phe(4-Cl)-OMe.HCl specifically has limited published in vivo data as it is primarily a research reagent used as a synthetic intermediate rather than a bioactive agent.
Enzyme Assay
In vitro enzyme assays for chlorophenylalanine derivatives typically involve measuring their interaction with enzymes such as phenylalanine hydroxylase or amino acid transporters. A standard protocol involves incubating the compound with the enzyme in appropriate buffer systems (e.g., 50 mM phosphate buffer, pH 7.4) at 37°C. The reaction products are analyzed using HPLC or LC-MS. For amino acid transporter binding studies, radiolabeled competition assays using cell membrane preparations expressing specific transporters may be employed. IC₅₀ values are calculated from dose-response curves.
Cell Assay
In vitro cellular assays for H-DL-Phe(4-Cl)-OMe.HCl typically employ cell lines such as HepG2, Caco-2, or neuronal cell lines to evaluate the compound's effects on cellular metabolism and protein synthesis. A common protocol involves seeding cells in multi-well plates at appropriate densities and incubating overnight at 37°C with 5% CO₂. Cells are treated with varying concentrations of the compound (typically 1-1000 µM) for 24-72 hours. Cell viability is assessed using MTT or CCK-8 assays. Metabolic effects can be evaluated by measuring amino acid uptake, protein synthesis rates, or gene expression changes using qPCR or Western blotting.
Animal Protocol
In vivo animal studies with chlorophenylalanine derivatives typically utilize rodent models such as rats or mice. A standard protocol involves oral administration or intraperitoneal injection of the compound dissolved in sterile saline or PBS at doses ranging from 50-500 mg/kg body weight. Animals are maintained under standard laboratory conditions. Blood samples are collected at predetermined time points for pharmacokinetic analysis. Tissue samples may be harvested for analysis of amino acid levels, metabolic markers, and neurotransmitter levels. Behavioral studies may evaluate effects on cognitive function or mood.
ADME/Pharmacokinetics
H-DL-Phe(4-Cl)-OMe.HCl (molecular weight 250.12 g/mol) is a small, lipophilic molecule. The compound has a melting point of 186-189°C. The methyl ester is susceptible to hydrolysis by esterases, releasing the free acid. The hydrochloride salt form enhances aqueous solubility and stability. Following absorption, the compound undergoes ester hydrolysis and normal phenylalanine metabolism, with excretion occurring via renal clearance. The 4-chloro substituent may affect metabolic processing and pharmacokinetic properties compared to unmodified phenylalanine.
Toxicity/Toxicokinetics
The hydrochloride salt of H-DL-Phe(4-Cl)-OMe exhibits low toxicity, consistent with its nature as an amino acid derivative. Acute toxicity is expected to be low, with an oral LD₅₀ in rodents likely >2000 mg/kg based on similar compounds. The compound is not considered genotoxic or carcinogenic. Skin and eye contact may cause mild irritation. Inhalation of dust should be avoided. The compound is stable under normal storage conditions.
References
[1]. Luckose F, et al. Effects of amino acid derivatives on physical, mental, and physiological activities. Crit Rev Food Sci Nutr. 2015;55(13):1793-1144.
Additional Infomation
H-DL-Phe(4-Cl)-OMe.HCl is supplied as a white to off-white solid powder with ≥98% purity. The compound has a molecular formula of C₁₀H₁₃Cl₂NO₂. It should be stored as a powder at -20°C for up to 3 years, at 4°C for up to 2 years, and in solution at -80°C for 6 months or -20°C for 1 month. The product is for research use only and is not approved for human therapeutic applications.
These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C5H10N2O
Molecular Weight
114.1457
Exact Mass
114.079
CAS #
62937-45-5
PubChem CID
447554
Appearance
White to off-white solid powder
Density
1.1±0.1 g/cm3
Boiling Point
303.6±31.0 °C at 760 mmHg
Melting Point
95-97°C
Flash Point
137.4±24.8 °C
Vapour Pressure
0.0±0.6 mmHg at 25°C
Index of Refraction
1.491
LogP
-1.51
Hydrogen Bond Donor Count
2
Hydrogen Bond Acceptor Count
2
Rotatable Bond Count
1
Heavy Atom Count
8
Complexity
103
Defined Atom Stereocenter Count
1
SMILES
O=C([C@@]1([H])C([H])([H])C([H])([H])C([H])([H])N1[H])N([H])[H]
InChi Key
VLJNHYLEOZPXFW-SCSAIBSYSA-N
InChi Code
InChI=1S/C5H10N2O/c6-5(8)4-2-1-3-7-4/h4,7H,1-3H2,(H2,6,8)/t4-/m1/s1
Chemical Name
(2R)-pyrrolidine-2-carboxamide
HS Tariff Code
2934.99.9001
Storage

Powder      -20°C    3 years

                     4°C     2 years

In solvent   -80°C    6 months

                  -20°C    1 month

Shipping Condition
Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)
Solubility Data
Solubility (In Vitro)
May dissolve in DMSO (in most cases), if not, try other solvents such as H2O, Ethanol, or DMF with a minute amount of products to avoid loss of samples
Solubility (In Vivo)
Note: Listed below are some common formulations that may be used to formulate products with low water solubility (e.g. < 1 mg/mL), you may test these formulations using a minute amount of products to avoid loss of samples.

Injection Formulations
(e.g. IP/IV/IM/SC)
Injection Formulation 1: DMSO : Tween 80: Saline = 10 : 5 : 85 (i.e. 100 μL DMSO stock solution 50 μL Tween 80 850 μL Saline)
*Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH ₂ O to obtain a clear solution.
Injection Formulation 2: DMSO : PEG300Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL DMSO 400 μLPEG300 50 μL Tween 80 450 μL Saline)
Injection Formulation 3: DMSO : Corn oil = 10 : 90 (i.e. 100 μL DMSO 900 μL Corn oil)
Example: Take the Injection Formulation 3 (DMSO : Corn oil = 10 : 90) as an example, if 1 mL of 2.5 mg/mL working solution is to be prepared, you can take 100 μL 25 mg/mL DMSO stock solution and add to 900 μL corn oil, mix well to obtain a clear or suspension solution (2.5 mg/mL, ready for use in animals).
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Injection Formulation 4: DMSO : 20% SBE-β-CD in saline = 10 : 90 [i.e. 100 μL DMSO 900 μL (20% SBE-β-CD in saline)]
*Preparation of 20% SBE-β-CD in Saline (4°C,1 week): Dissolve 2 g SBE-β-CD in 10 mL saline to obtain a clear solution.
Injection Formulation 5: 2-Hydroxypropyl-β-cyclodextrin : Saline = 50 : 50 (i.e. 500 μL 2-Hydroxypropyl-β-cyclodextrin 500 μL Saline)
Injection Formulation 6: DMSO : PEG300 : castor oil : Saline = 5 : 10 : 20 : 65 (i.e. 50 μL DMSO 100 μLPEG300 200 μL castor oil 650 μL Saline)
Injection Formulation 7: Ethanol : Cremophor : Saline = 10: 10 : 80 (i.e. 100 μL Ethanol 100 μL Cremophor 800 μL Saline)
Injection Formulation 8: Dissolve in Cremophor/Ethanol (50 : 50), then diluted by Saline
Injection Formulation 9: EtOH : Corn oil = 10 : 90 (i.e. 100 μL EtOH 900 μL Corn oil)
Injection Formulation 10: EtOH : PEG300Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL EtOH 400 μLPEG300 50 μL Tween 80 450 μL Saline)


Oral Formulations
Oral Formulation 1: Suspend in 0.5% CMC Na (carboxymethylcellulose sodium)
Oral Formulation 2: Suspend in 0.5% Carboxymethyl cellulose
Example: Take the Oral Formulation 1 (Suspend in 0.5% CMC Na) as an example, if 100 mL of 2.5 mg/mL working solution is to be prepared, you can first prepare 0.5% CMC Na solution by measuring 0.5 g CMC Na and dissolve it in 100 mL ddH2O to obtain a clear solution; then add 250 mg of the product to 100 mL 0.5% CMC Na solution, to make the suspension solution (2.5 mg/mL, ready for use in animals).
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Oral Formulation 3: Dissolved in PEG400
Oral Formulation 4: Suspend in 0.2% Carboxymethyl cellulose
Oral Formulation 5: Dissolve in 0.25% Tween 80 and 0.5% Carboxymethyl cellulose
Oral Formulation 6: Mixing with food powders


Note: Please be aware that the above formulations are for reference only. InvivoChem strongly recommends customers to read literature methods/protocols carefully before determining which formulation you should use for in vivo studies, as different compounds have different solubility properties and have to be formulated differently.

 (Please use freshly prepared in vivo formulations for optimal results.)
Preparing Stock Solutions 1 mg 5 mg 10 mg
1 mM 8.7604 mL 43.8020 mL 87.6040 mL
5 mM 1.7521 mL 8.7604 mL 17.5208 mL
10 mM 0.8760 mL 4.3802 mL 8.7604 mL

*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.

Calculator

Molarity Calculator allows you to calculate the mass, volume, and/or concentration required for a solution, as detailed below:

  • Calculate the Mass of a compound required to prepare a solution of known volume and concentration
  • Calculate the Volume of solution required to dissolve a compound of known mass to a desired concentration
  • Calculate the Concentration of a solution resulting from a known mass of compound in a specific volume
An example of molarity calculation using the molarity calculator is shown below:
What is the mass of compound required to make a 10 mM stock solution in 5 ml of DMSO given that the molecular weight of the compound is 350.26 g/mol?
  • Enter 350.26 in the Molecular Weight (MW) box
  • Enter 10 in the Concentration box and choose the correct unit (mM)
  • Enter 5 in the Volume box and choose the correct unit (mL)
  • Click the “Calculate” button
  • The answer of 17.513 mg appears in the Mass box. In a similar way, you may calculate the volume and concentration.

Dilution Calculator allows you to calculate how to dilute a stock solution of known concentrations. For example, you may Enter C1, C2 & V2 to calculate V1, as detailed below:

What volume of a given 10 mM stock solution is required to make 25 ml of a 25 μM solution?
Using the equation C1V1 = C2V2, where C1=10 mM, C2=25 μM, V2=25 ml and V1 is the unknown:
  • Enter 10 into the Concentration (Start) box and choose the correct unit (mM)
  • Enter 25 into the Concentration (End) box and select the correct unit (mM)
  • Enter 25 into the Volume (End) box and choose the correct unit (mL)
  • Click the “Calculate” button
  • The answer of 62.5 μL (0.1 ml) appears in the Volume (Start) box
g/mol

Molecular Weight Calculator allows you to calculate the molar mass and elemental composition of a compound, as detailed below:

Note: Chemical formula is case sensitive: C12H18N3O4  c12h18n3o4
Instructions to calculate molar mass (molecular weight) of a chemical compound:
  • To calculate molar mass of a chemical compound, please enter the chemical/molecular formula and click the “Calculate’ button.
Definitions of molecular mass, molecular weight, molar mass and molar weight:
  • Molecular mass (or molecular weight) is the mass of one molecule of a substance and is expressed in the unified atomic mass units (u). (1 u is equal to 1/12 the mass of one atom of carbon-12)
  • Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol.
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Reconstitution Calculator allows you to calculate the volume of solvent required to reconstitute your vial.

  • Enter the mass of the reagent and the desired reconstitution concentration as well as the correct units
  • Click the “Calculate” button
  • The answer appears in the Volume (to add to vial) box
In vivo Formulation Calculator (Clear solution)
Step 1: Enter information below (Recommended: An additional animal to make allowance for loss during the experiment)
Step 2: Enter in vivo formulation (This is only a calculator, not the exact formulation for a specific product. Please contact us first if there is no in vivo formulation in the solubility section.)
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Calculation results

Working concentration mg/mL;

Method for preparing DMSO stock solution mg drug pre-dissolved in μL DMSO (stock solution concentration mg/mL). Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug.

Method for preparing in vivo formulation:Take μL DMSO stock solution, next add μL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O,mix and clarify.

(1) Please be sure that the solution is clear before the addition of next solvent. Dissolution methods like vortex, ultrasound or warming and heat may be used to aid dissolving.
             (2) Be sure to add the solvent(s) in order.

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