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Levothyroxine Sodium

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Levothyroxine Sodium
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Cat #: V22762 CAS #: 55-03-8 Purity ≥ 99%

Description: Levothyroxine Sodium (L-T4 sodium, LT4 sodium, LT4 sodium, L-Thyroxine sodium), a major thyroid hormones involved in the maintenance of metabolic homeostasis, is an endogenous agonist of Thyroid hormone receptor alpha and beta.

References: Arici M, et al. Association between genetic polymorphism and levothyroxine bioavailability in hypothyroid patients. Endocr J. 2018 Mar 28;65(3):317-323.

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Molecular Weight (MW)798.85
Molecular FormulaC15H10I4NNaO4
CAS No.55-03-8
SynonymsLevothyroxine sodium; T4 sodium; L-Thyroxine sodium
ProtocolIn VitroDeiodinases (DIOs), which catalyse the conversion of thyroxine (pro-hormone) to the active thyroid hormone, are associated with thyroid stimulating hormone (TSH) levels. DIO1 and DIO2 catalyze activation of thyroid hormone secretion in contrast to DIO3 playing role inactivation of the secretion. Activities of DIO1 and DIO2 play pivotal role in the negative feedback regulation of pituitary TSH secretion.
These protocols are for reference only. InvivoChem does not independently validate these methods.
Preparing Stock Solutions
Solvent volume to be added Mass (the weight of a compound)
Mother liquor concentration 1mg5mg10mg20mg
1mM1.2518 mL6.2590 mL12.5180 mL25.0360 mL
5mM0.2504 mL1.2518 mL2.5036 mL5.0072 mL
10mM0.1252 mL0.6259 mL1.2518 mL2.5036 mL
20mM0.0626 mL0.3129 mL0.6259 mL1.2518 mL
The molarity calculator equation
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*
The dilution calculator equation
Concentration(start) × Volume(start) = Concentration(final) × Volume(final)

This equation is commonly abbreviated as: C1 V1 = C2 V2

Concentration(start)
C1
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Volume(start)
V1
=
Concentration(final)
C2
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Volume(final)
V2
Step One: Enter information below
Dosage mg/kg Average weight of animals g Dosing volume per animal µL Number of animals
Step Two: Enter the in vivo formulation
%DMSO + % + %Tween 80 + %ddH2O

Calculation Results:
Working concentration: mg/ml;
Method for preparing DMSO master liquid: mg drug pre-dissolved in µL DMSO(Master liquid 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 master liquid, next add µL PEG300, mix and clarify, next add µL Tween 80,mix and clarify, next add µL ddH2O,mix and clarify.
Note:
  • (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.