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    Natural Products
    DL-Tyrosine
    DL-Tyrosine
    Information
    CAS No. 556-03-6 Price $30 / 20mg
    Catalog No.CFN70142Purity>=98%
    Molecular Weight181.1Type of CompoundAlkaloids
    FormulaC9H11NO3Physical DescriptionPowder
    Download     COA    MSDSSimilar structuralComparison
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    According to end customer requirements, ChemFaces provide solvent format. This solvent format of product intended use: Signaling Inhibitors, Biological activities or Pharmacological activities.
    Size /Price /Stock 10 mM * 1 mL in DMSO / $7.0 / In-stock
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    DL-Tyrosine

    DL-Tyrosine
    Product Name DL-Tyrosine
    CAS No.: 556-03-6
    Catalog No.: CFN70142
    Molecular Formula: C9H11NO3
    Molecular Weight: 181.1 g/mol
    Purity: >=98%
    Type of Compound: Alkaloids
    Physical Desc.: Powder
    Source:
    Solvent: Chloroform, Dichloromethane, Ethyl Acetate, DMSO, Acetone, etc.
    Price: $30 / 20mg
    Inquire / Order: manager@chemfaces.com
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  • Related Screening Libraries
    Size /Price /Stock 10 mM * 100 uL in DMSO / Inquiry / In-stock
    10 mM * 1 mL in DMSO / Inquiry / In-stock
    Related Libraries
  • Alkaloids Compound Library
  • Biological Activity
    Description: Reference standards.
    In vitro:
    Fluid Phase Equilibria, 2012,314(25):185-197.
    Some thermodynamic properties of dl-Tyrosine and dl-Tryptophan. Effect of the ionic medium, ionic strength and temperature on the solubility and acid–base properties.[Reference: WebLink]
    A study on the acid–base properties and solubility of two amino acids, namely DL-Tyrosine and dl-Tryptophan, was carried out in different experimental conditions (ionic medium, ionic strength and temperature).
    METHODS AND RESULTS:
    The protonation of DL-Tyrosine and dl-Tryptophan was investigated in both (CH3)4NCl and NaCl aqueous solutions by potentiometry (ISE-[H+] glass electrode) in different ionic strength ranges (up to ∼3.0 mol L−1 in (CH3)4NCl and ∼5 mol L−1 in NaCl). Measurements in NaCl were also performed by spectrophotometry at three different temperatures (T = 293.15, 298.15 and 308.15 K). The potentiometric and spectrophotometric data were analyzed altogether in order to obtain reliable protonation constants.Solubility investigations were performed only at T = 298.15 K, in NaCl and (CH3)4NCl aqueous solutions in the ionic strength range investigated for the protonation constants, with the aim to determine the Setschenow coefficient and the activity coefficients of the neutral species of the two amino acids. The dependence of protonation constants on ionic strength was modelled by means of a Debye–Hückel type equation and the SIT approach.
    CONCLUSIONS:
    The temperature coefficients, in NaCl aqueous solutions, were calculated by using the protonation constants at different temperatures. As a further validation of the data, for the DL-Tyrosine, the ΔH values were also determined by isoperibol calorimetric titrations, at T = 298.15 K, I = 0.15 and 0.5 mol L−1; these values were compared with the ΔH calculated by using the temperature coefficients.
    Arch Biochem & Biophys, 1951, 31(3):398-405.
    Inhibition of Leuconostoc mesenteroides P-60 by d-tyrosine and its relationship with sodium and potassium content of the medium.[Reference: WebLink]

    METHODS AND RESULTS:
    Evidence for a growth inhibition of L. mesenteroides P-60 by the D-isomer of tyrosine was obtained by comparison of the relative activities of L- tyrosine and DL-Tyrosine for this organism, and by comparison of tyrosine assay results obtained on acid and alkaline hydrolysates of casein and beef round. This inhibition is significantly greater on a conventional medium buffered with both Na and K salts than on one containing all of the buffer salts in the K form.
    CONCLUSIONS:
    Similar studies with L. citrovorum 8081 and Lactobacillus delbrueckii 3 indicate that these organisms are neither inhibited nor stimulated significantly by the presence of D-tyrosine, and are therefore to be recommended as more satisfactory assay organisms for tyrosine whenever the D-isomer is involved in the assays
    DL-Tyrosine Description
    Source:
    Solvent: Chloroform, Dichloromethane, Ethyl Acetate, DMSO, Acetone, etc.
    Storage: Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to 24 months(2-8C).

    Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20C. Generally, these will be useable for up to two weeks. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.

    Need more advice on solubility, usage and handling? Please email to: service@chemfaces.com

    After receiving: The packaging of the product may have turned upside down during transportation, resulting in the natural compounds adhering to the neck or cap of the vial. take the vial out of its packaging and gently shake to let the compounds fall to the bottom of the vial. for liquid products, centrifuge at 200-500 RPM to gather the liquid at the bottom of the vial. try to avoid loss or contamination during handling.
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    Calculate Dilution Ratios(Only for Reference)
    1 mg 5 mg 10 mg 20 mg 25 mg
    1 mM 5.5218 mL 27.6091 mL 55.2181 mL 110.4362 mL 138.0453 mL
    5 mM 1.1044 mL 5.5218 mL 11.0436 mL 22.0872 mL 27.6091 mL
    10 mM 0.5522 mL 2.7609 mL 5.5218 mL 11.0436 mL 13.8045 mL
    50 mM 0.1104 mL 0.5522 mL 1.1044 mL 2.2087 mL 2.7609 mL
    100 mM 0.0552 mL 0.2761 mL 0.5522 mL 1.1044 mL 1.3805 mL
    * Note: If you are in the process of experiment, it's need to make the dilution ratios of the samples. The dilution data of the sheet for your reference. Normally, it's can get a better solubility within lower of Concentrations.
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