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L-Cysteine

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Identification
Molecular formula
C3H7NO2S
CAS number
52-90-4
IUPAC name
(2R)-2-acetamido-3-sulfanyl-propanoic acid
State
State

L-Cysteine is typically solid at room temperature. It has a crystal or powder-like structure and is often used in various industrial and biochemical applications.

Melting point (Celsius)
240.00
Melting point (Kelvin)
513.15
Boiling point (Celsius)
246.00
Boiling point (Kelvin)
519.15
General information
Molecular weight
121.16g/mol
Molar mass
121.1580g/mol
Density
1.5090g/cm3
Appearence

L-Cysteine appears as a white crystalline solid or powder. It may also come as a solution, exhibiting no to slight coloration, depending on its purity.

Comment on solubility

Solubility of (2R)-2-acetamido-3-sulfanyl-propanoic acid

(2R)-2-acetamido-3-sulfanyl-propanoic acid, known for its distinct structure, exhibits interesting solubility properties that can be influenced by various factors. Here are some key points regarding its solubility:

  • Polar Nature: The compound's polar functional groups, particularly the acetamido and sulfanyl groups, contribute to its ability to interact with water molecules, enhancing its solubility in aqueous solutions.
  • Hydrogen Bonding: The presence of hydrogen bond donors and acceptors allows for significant hydrogen bonding with water, further supporting solubility.
  • pH Sensitivity: The solubility can be affected by the pH of the solution, as the ionization of the carboxylic acid group may facilitate greater solubility in alkaline conditions.
  • Temperature Dependency: Like many compounds, its solubility may increase with temperature, allowing for easier dissolution at higher temperatures.

In summary, the solubility of (2R)-2-acetamido-3-sulfanyl-propanoic acid is notably enhanced due to its polar and ionic characteristics. Factors such as pH and temperature should be considered when assessing its solubility in different environments.

Interesting facts

Interesting Facts about (2R)-2-acetamido-3-sulfanyl-propanoic acid

(2R)-2-acetamido-3-sulfanyl-propanoic acid, commonly known as an important compound in the study of amino acids, offers unique characteristics that make it fascinating for researchers. Here are some noteworthy points:

  • Structure and Chirality: This compound is notable for its chiral center, which means it exists in two enantiomeric forms. Chirality is fundamental in biological systems, and the specific arrangement of atoms can influence a molecule's interactions in living organisms.
  • Biological Role: As a derivative of an amino acid, this compound plays a role in various biological processes, including protein synthesis and cellular metabolism, providing insight into how proteins are built and function.
  • Sulfur Inclusion: The presence of the sulfanyl group within the structure is of particular interest. Sulfur-containing compounds are crucial in biological systems and participate in important biochemical reactions, such as disulfide bond formation in proteins.
  • Potential Applications: Researchers are exploring this compound's potential in pharmaceuticals and biochemistry. The unique properties of its acetamido and sulfanyl groups make it a candidate for drug design and the development of new therapeutic agents.

In conclusion, the study of (2R)-2-acetamido-3-sulfanyl-propanoic acid not only enhances our understanding of amino acids but also opens avenues for further research into compounds that can lead to advancements in medicine and biochemistry. As scientists delve deeper into its properties, we may yet uncover even more intriguing applications and biological significance.

Synonyms
N-Acetyl-L-cysteine
acetylcysteine
616-91-1
N-Acetylcysteine
mercapturic acid
Acetadote
L-Acetylcysteine
Fluimucetin
Respaire
Acetein
N-Acetyl-cysteine
Acetilcisteina
Flumucetin
N-Acetyl cysteine
Brunac
L-Cysteine, N-acetyl-
Fluimicil Infantil
Acetylcysteinum
Syntemucol
Lysomucil
Mucofilin
acetyl cysteine
Inspir
Tixair
Mucolyticum Lappe
Mucolytikum Lappe
N-Acetyl-3-mercaptoalanine
Mucolyticum
Cetylev
Neo-fluimucil
Cysteine, N-acetyl-, L-
Mucolyticum-Lappe
N-Acetyl-L-(+)-cysteine
NAC-TB
component of Naxid
Mercapturic acid, (R)-
Fluatox
Fluimicil
Mucolator
Flumil
Mucret
(R)-mercapturic acid
Muco sanigen
Oristar nalc
MUCOSIL-10
MUCOSIL-20
N-acetyi-l-cysteine
L-alpha-Acetamido-beta-mercaptopropionic acid
CCRIS 3764
Mucocedyl
N-acetyl-(R)-cysteine
NSC 111180
UNII-WYQ7N0BPYC
WYQ7N0BPYC
HSDB 3003
EINECS 210-498-3
Acetylcysteinum [INN-Latin]
Acetilcisteina [INN-Spanish]
Ilube (eye drops)
N-A-C Sustain
NSC-111180
(r)-n-acetylcysteine
DTXSID5020021
CHEBI:28939
DTXCID4021
(R)-2-acetylamino-3-mercaptopropanoic acid
(2R)-2-acetylamino-3-sulfanylpropanoic acid
NSC111180
Acetylcysteine [USAN:USP:INN:BAN:JAN]
ACETYLCYSTEINE (II)
ACETYLCYSTEINE [II]
Acetylcysteinum (INN-Latin)
Acetilcisteina (INN-Spanish)
ACETYLCYSTEINE (MART.)
ACETYLCYSTEINE [MART.]
ACETYLCYSTEINE (USP-RS)
ACETYLCYSTEINE [USP-RS]
ACETYLCYSTEINE (EP MONOGRAPH)
ACETYLCYSTEINE [EP MONOGRAPH]
N Acetylcysteine
ACETYLCYSTEINE (USP MONOGRAPH)
ACETYLCYSTEINE [USP MONOGRAPH]
Acid, Mercapturic
Acetylcysteine (USAN:USP:INN:BAN:JAN)
N Acetyl L cysteine
N-Acetyl-N-Cysteine
DTXSID8048105
Tris-NAC
Acetylcysteine Injection
BRONCHOLYSIN (MUCOLYTIC)
DTXCID6028076
CHEBI:22198
R05CB01
S01XA08
V03AB23
210-498-3
5052
Broncholysin
Mucomyst
Fluimucil
Parvolex
Fluprowit
Airbron
Fabrol
Mucosil
Mucosolvin
Exomuc
Ac-Cys-OH
(R)-2-Acetamido-3-mercaptopropanoic acid
Acetyl-L-cysteine
(2R)-2-acetamido-3-sulfanylpropanoic acid
(2R)-2-Acetamido-3-sulfanyl-propanoic acid
MFCD00004880
cysteine, N-acetyl-
RK-0202
MLS000028419
NCGC00022304-05
N-Acetyl-L-cysteine hydrochloride
SMR000058377
LNAC
Ilube
N-acetylcystein
CAS-616-91-1
SR-01000075439
Acetylcysteine Ph. Eur.
AcCys
N-acetyl-l-cys
Sodium 2-acetamido-3-mercaptopropionate
SC2
N-acetyl-L-cystein
Naxid (Salt/Mix)
N-Acety-L-Cysteine
Opera_ID_452
MUCOMYST (TN)
Spectrum2_000086
Spectrum3_000287
Spectrum4_000137
Spectrum5_000764
AC-L-CYS-OH
Acetylcysteine (Standard)
CHEMBL600
NAC & TNF
ACETYLCYSTEINE [MI]
SCHEMBL5292
(2R)-2-(acetylamino)-3-sulfanylpropanoic acid
ACETYLCYSTEINE [INN]
ACETYLCYSTEINE [JAN]
Lopac0_000081
ACETYLCYSTEINE [HSDB]
ACETYLCYSTEINE [USAN]
BSPBio_001794
KBioGR_000554
MLS001076125
MLS006011563
ACETYLCYSTEINE [VANDF]
SPECTRUM1500105
SPBio_000012
ACETYLCYSTEINE [WHO-DD]
Acetylcysteine(N-acetylcysteine)
GTPL10945
HY-B0215R
KBio3_001294
N-Acetyl-L-cysteine, USP grade
Acetylcysteine (JP18/USP/INN)
GLXC-15143
HMS1920A11
HMS2091G11
HMS2234J22
HMS3260A04
HMS3655G11
HMS3715D03
HMS3884E04
HY-B0215
2-Acetylamino-3-mercapto-propionate
ACETYLCYSTEINE [ORANGE BOOK]
Tox21_110877
Tox21_201078
Tox21_500081
acetylcysteine (n-acetyl-l-cysteine)
BDBM50420190
CCG-38902
s1623
AKOS015841009
Tox21_110877_1
CCG-204176
DB06151
FA10890
GS-3121
LP00081
SDCCGSBI-0050069.P002
(R)-2-Acetamido-3-mercaptopropanoicacid
NCGC00015086-04
NCGC00022304-03
NCGC00022304-04
NCGC00022304-06
NCGC00022304-07
NCGC00022304-08
NCGC00022304-17
NCGC00022304-21
NCGC00022304-23
NCGC00258631-01
NCGC00260766-01
AC-16071
AC-24117
BP-12854
FA138512
propanoic acid, 2-acetylamino-3-mercapto-
SBI-0051272.P003
DB-038288
A0905
EU-0100081
NS00069131
SW199597-2
(2R)-2-acetylamino-3-mercapto-propionic acid
EN300-72028
A 7250
C06809
D00221
L-Cysteine, N-acetyl- & Tumor necrosis factor
N-Acetyl-L-cysteine, BioXtra, >=99% (TLC)
AB00051908_02
AB00382974-12
AB00382974_13
L-.alpha.-Acetamido-.beta.-mercaptopropionic acid
Q375613
N-Acetyl-L-cysteine & Tumor necrosis factor (TNF)
N-Acetyl-L-cysteine 100 microg/mL in Acetonitrile
SR-01000075439-1
SR-01000075439-3
SR-01000075439-5
BRD-K59058747-001-18-3
BRD-K59058747-001-19-1
BRD-K59058747-001-20-9
N-Acetyl-L-cysteine - Non-animal and non-human origin
N-Acetyl-L-cysteine, cell culture tested, BioReagent
N-Acetyl-L-cysteine, Vetec(TM) reagent grade, 98%
F1905-7178
Z1143441555
CABC898A-E48B-4E13-9F72-98D0609A1854
N-Acetyl-L-cysteine, SAJ special grade, 98.0-102.0%
N-Acetyl-L-cysteine, Sigma Grade, >=99% (TLC), powder
Acetylcysteine, British Pharmacopoeia (BP) Reference Standard
Acetylcysteine, European Pharmacopoeia (EP) Reference Standard
Acetylcysteine, United States Pharmacopeia (USP) Reference Standard
N-Acetyl-L-cysteine, Pharmaceutical Secondary Standard; Certified Reference Material