Chemical Properties of L-Methionine (CAS 63-68-3)

InChI

InChI=1S/C5H11NO2S/c1-9-3-2-4(6)5(7)8/h4H,2-3,6H2,1H3,(H,7,8)/t4-/m1/s1

InChI Key

FFEARJCKVFRZRR-SCSAIBSYSA-N

Formula

C5H11NO2S

SMILES

CSCCC(N)C(=O)O

Molecular Weight¹

149.21

CAS

63-68-3

Other Names

• (S)-(+)-methionine
• (S)-2-Amino-4-(methylthio)butanoic acid
• (S)-2-amino-4-(methylthio)-butanoic acid, ,
• .gamma.-methylthio-.alpha.-aminobutyric acid
• 2-Amino-4-(methylthio)butyric acid
• 2-Amino-4-methylthiobutanoic acid
• 2-Amino-4-methylthiobutanoic acid (S)-
• Acimethin
• Butanoic acid, 2-amino-4-(methylthio)-, (S)-
• Butyric acid, 2-amino-4-(methylthio)-
• Cymethion
• L(-)-Amino-«gamma»-methylthiobutyric acid
• L(-)-Amino-«gamma»-methylthiobutyric acid
• L-(-)-Methionine
• L-.alpha.-amino-.gamma.-methylthiobutyric acid
• L-2-Amino-4-(methylthio)butyric acid
• L-Homocysteine, S-methyl-
• L-«alpha»-Amino-«gamma»-methylmercaptobutyric acid
• L-«gamma»-Methylthio-«alpha»-aminobutyric acid
• L-«alpha»-Amino-«gamma»-methylmercaptobutyric acid
• L-«gamma»-Methylthio-«alpha»-aminobutyric acid
• Liquimeth
• Met
• Methionine
• Methionine, L-
• NSC 22946
• S-Methionine
• h-Met-oh
• «gamma»-Methylthio-«alpha»-aminobutyric acid
• «gamma»-Methylthio-«alpha»-aminobutyric acid

• PAff : Proton affinity (kJ/mol).
• BasG : Gas basicity (kJ/mol).
• Δ_cH°_solid : Standard solid enthalpy of combustion (kJ/mol).
• C_p,gas : Ideal gas heat capacity (J/mol×K).
• Δ_fG° : Standard Gibbs free energy of formation (kJ/mol).
• Δ_fH°_gas : Enthalpy of formation at standard conditions (kJ/mol).
• Δ_fH°_solid : Solid phase enthalpy of formation at standard conditions (kJ/mol).
• Δ_fusH° : Enthalpy of fusion at standard conditions (kJ/mol).
• Δ_subH° : Enthalpy of sublimation at standard conditions (kJ/mol).
• Δ_subH : Enthalpy of sublimation at a given temperature (kJ/mol).
• Δ_vapH° : Enthalpy of vaporization at standard conditions (kJ/mol).
• Δ_vapH : Enthalpy of vaporization at a given temperature (kJ/mol).
• IE : Ionization energy (eV).
• log₁₀WS : Log10 of Water solubility in mol/l.
• logP_oct/wat : Octanol/Water partition coefficient.
• McVol : McGowan's characteristic volume (ml/mol).
• P_c : Critical Pressure (kPa).
• P_vap : Vapor pressure (kPa).
• T_boil : Normal Boiling Point Temperature (K).
• T_c : Critical Temperature (K).
• T_fus : Normal melting (fusion) point (K).
• V_c : Critical Volume (m³/kmol).
• ¹: Molecular weight from the IUPAC atomic weights tables.

Physical Properties

Property	Value	Unit	Source
PAff	935.40	kJ/mol	NIST
BasG	901.50	kJ/mol	NIST
ΔcH°solid	[-3564.11; -3176.00]	kJ/mol
ΔcH°solid	-3564.11 ± 0.61	kJ/mol	NIST
ΔcH°solid	-3176.00 ± 0.80	kJ/mol	NIST
ΔfG°	-177.39	kJ/mol	Joback Calculated Property
ΔfH°gas	-413.50 ± 4.10	kJ/mol	NIST
ΔfH°solid	-577.50 ± 0.70	kJ/mol	NIST
ΔfusH°	20.20	kJ/mol	Joback Calculated Property
ΔsubH°	[164.00; 164.00]	kJ/mol
ΔsubH°	164.00 ± 4.00	kJ/mol	NIST
ΔsubH°	164.00 ± 4.00	kJ/mol	NIST
ΔvapH°	67.22	kJ/mol	Joback Calculated Property
IE	[8.30; 9.00]	eV
IE	8.30	eV	NIST
IE	8.63 ± 0.10	eV	NIST
IE	9.00	eV	NIST
IE	8.65	eV	NIST
log10WS	-0.44		Crippen Calculated Property
logPoct/wat	0.151		Crippen Calculated Property
McVol	115.080	ml/mol	McGowan Calculated Property
Pc	4684.89	kPa	Joback Calculated Property
Tboil	600.72	K	Joback Calculated Property
Tc	805.14	K	Joback Calculated Property
Tfus	359.52	K	Joback Calculated Property
Vc	0.417	m3/kmol	Joback Calculated Property

Temperature Dependent Properties

Property	Value	Unit	Temperature (K)	Source
Cp,gas	[274.83; 319.87]	J/mol×K	[600.72; 805.14]
Cp,gas	274.83	J/mol×K	600.72	Joback Calculated Property
Cp,gas	283.51	J/mol×K	634.79	Joback Calculated Property
Cp,gas	291.70	J/mol×K	668.86	Joback Calculated Property
Cp,gas	299.43	J/mol×K	702.93	Joback Calculated Property
Cp,gas	306.70	J/mol×K	737.00	Joback Calculated Property
Cp,gas	313.51	J/mol×K	771.07	Joback Calculated Property
Cp,gas	319.87	J/mol×K	805.14	Joback Calculated Property
ΔsubH	[125.00; 125.00]	kJ/mol	[455.00; 474.00]
ΔsubH	125.00 ± 0.80	kJ/mol	455.00	NIST
ΔsubH	125.00	kJ/mol	474.00	NIST
ΔvapH	139.00	kJ/mol	437.00	Enthalp...

Correlations

Property	Value	Unit	Temperature (K)	Source
Pvap	[1.33; 202.66]	kPa	[559.55; 688.22]	The Yaw...
Equation			ln(Pvp) = A + B/(T + C)
Coefficient A			2.71590e+01
Coefficient B			-1.50359e+04
Temperature range, min.			559.55
Temperature range, max.			688.22
Pvap	1.33	kPa	559.55	Calculated Property
Pvap	2.60	kPa	573.85	Calculated Property
Pvap	4.92	kPa	588.14	Calculated Property
Pvap	9.03	kPa	602.44	Calculated Property
Pvap	16.11	kPa	616.74	Calculated Property
Pvap	27.98	kPa	631.03	Calculated Property
Pvap	47.44	kPa	645.33	Calculated Property
Pvap	78.61	kPa	659.63	Calculated Property
Pvap	127.49	kPa	673.92	Calculated Property
Pvap	202.66	kPa	688.22	Calculated Property

Similar Compounds

Find more compounds similar to L-Methionine.

Mixtures

• L-Methionine + Water
• L-Methionine + Hydrogen chloride + Water
• sodium hydroxide + L-Methionine + Water
• Sucrose + L-Methionine + Water
• L-Methionine + Methyl Alcohol + Water
• L-Methionine + Ethanol + Water
• L-Methionine + Acetone + Water
• L-Methionine + Ethanol

Sources

• Crippen Method
• Crippen Method
• Surface tension and UV-visible investigations of aggregation and adsorption behavior of NaC and NaDC in water-amino acid mixtures
• Thermodynamics of proton dissociations from aqueous L-methionine at temperatures from (278.15 to 393.15) K, molalities from (0.0125 to 1.0) mol Ae kg 1, and at the pressure 0.35 MPa: Apparent molar heat capacities and apparent molar volumes of L-methionine, methioninium chloride, and sodium methioninate
• Study of solute solute and solute solvent interactions of l-methionine in aqueous-sucrose solutions at different temperatures
• Study of the interactions of PAMAM-NH2 G4 dendrimer with selected natural amino acids in aqueous solutions
• Effect of temperature and additives on the critical micelle concentration and thermodynamics of micelle formation of sodium dodecyl benzene sulfonate and dodecyltrimethylammonium bromide in aqueous solution: A conductometric study
• Conductivity and fluorescence studies on the micellization properties of sodium cholate and sodium deoxycholate in aqueous medium at different temperatures: Effect of selected amino acids
• Determination and correlation of solubility and thermodynamic properties of L-methionine in binary solvents of water + (methanol, ethanol, acetone)
• Enthalpies of sublimation of L-methionine and DL-methionine: Knudsen's effusion mass spectrometric study
• Thermochemistry of Zn(AA)SO4*H2O(s) (AA = l-?-valine and methionine)
• APPARENT MOLAR VOLUME, COMPRESSIBILITY AND VISCOMETRIC STUDIES OF SODIUM DODECYL BENZENE SULFONATE (SDBS) AND DODECYLTRIMETHYLAMMONIUM BROMIDE (DTAB) IN AQUEOUS AMINO ACID SOLUTIONS: A THERMO-ACOUSTIC APPROACH
• Volumetric, compressibility and viscometric studies on sodium cholate/sodium deoxycholate amino acid interactions in aqueous medium
• Solubility of the Proteinogenic a-Amino Acids in Water, Ethanol, and Ethanol-Water Mixtures
• Surface Tension of Aqueous Solutions of Small-Chain Amino and Organic Acids
• Solubility and Metastable Zone Width of the Methionine Enantiomers and Their Mixtures in Water
• Joback Method
• McGowan Method
• NIST Webbook
• The Yaws Handbook of Vapor Pressure

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