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L-arginine

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Identification
Molecular formula
C6H14N4O2
CAS number
74-79-3
IUPAC name
(2S)-2-amino-5-(diaminomethyleneammonio)pentanoate
State
State

At room temperature, L-arginine is typically in a solid state. It is stable under normal conditions and is often used in its crystalline form in biochemical applications.

Melting point (Celsius)
244.00
Melting point (Kelvin)
517.15
Boiling point (Celsius)
300.00
Boiling point (Kelvin)
573.15
General information
Molecular weight
174.21g/mol
Molar mass
174.2050g/mol
Density
1.7600g/cm3
Appearence

L-arginine usually appears as a white crystalline powder. It is also often seen as a colorless to white crystalline base.

Comment on solubility

Solubility of (2S)-2-amino-5-(diaminomethyleneammonio)pentanoate

The compound (2S)-2-amino-5-(diaminomethyleneammonio)pentanoate, a salt form of an amino acid, presents unique solubility characteristics that are influenced by its molecular structure.

Solubility in Water

Generally, amino acids and their derivatives tend to be soluble in water due to the presence of ionic and polar functional groups. In particular:

  • The amino and carboxyl groups can form hydrogen bonds with water molecules.
  • This compound features multiple amino groups, enhancing its solubility in polar solvents.

Influence of pH

The solubility of this compound can vary significantly with changes in pH:

  • At acidic pH, the amino groups become protonated, which promotes solubility.
  • At alkaline pH, deprotonation may occur, affecting solubility in different ways.

Key Points

In conclusion, the solubility of (2S)-2-amino-5-(diaminomethyleneammonio)pentanoate can be summarized as:

  • Predominantly soluble in water due to its ionic nature.
  • Responsive to changes in pH, influencing protonation state and, subsequently, solubility.
  • Can be utilized in various biochemical applications because of its solubility characteristics.

In the context of pharmaceutical and biochemical applications, understanding the solubility properties of this compound is crucial for effective utilization.

Interesting facts

Interesting Facts about (2S)-2-amino-5-(diaminomethyleneammonio)pentanoate

(2S)-2-amino-5-(diaminomethyleneammonio)pentanoate, commonly known as L-arginine, is a fascinating compound that plays crucial roles in various biological processes. Here are some key points that highlight its significance:

  • Biochemical Precursor: L-arginine is an essential amino acid that serves as a precursor for the synthesis of nitric oxide (NO), a vital signaling molecule involved in numerous physiological functions.
  • Role in Protein Synthesis: As one of the building blocks of protein, L-arginine is integral to muscle metabolism and repair, making it an important compound for athletes and those involved in physical training.
  • Immune System Support: This amino acid plays a pivotal role in the immune response by enhancing the function of immune cells and promoting wound healing.
  • Cardiovascular Health: L-arginine is known to improve blood circulation by dilating blood vessels. Some research suggests that it may contribute to heart health by lowering blood pressure.
  • Supplement Forms: Available as a dietary supplement, L-arginine can be found in various forms, including powders and capsules, which are popular among fitness enthusiasts for their potential benefits.

Researchers continue to explore the multifaceted benefits of L-arginine, with studies investigating its impact on conditions like erectile dysfunction, hypertension, and more. Furthermore, the compound's unique structural features allow it to engage in various biological interactions, making it a topic of interest in both medicinal chemistry and nutritional science.

In the words of one leading researcher, "The potential of L-arginine in clinical applications is vast, and ongoing studies will surely reveal even more about its therapeutic roles."

As a vital component in cellular functioning, L-arginine is not just a simple amino acid—it's a powerhouse of biological activity that continues to intrigue and inspire scientists worldwide.

Synonyms
CPSS
Protonated arginine
ARGININE, CONJUGATE MONOACID, L-
17806-42-7
104352-01-4
DTXSID201031042
L-Arginine, conjugate acid (1:1)