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D-Alanine

  • Name D-Alanine
  • EINECS206-418-1
  • CAS No. 338-69-2
  • Density1.161g/cm3
  • PSA63.32000
  • LogP0.11850
  • Solubility155 g/L (20 °C) in water
  • Melting Point291 °C (dec.)(lit.)
  • FormulaC3H7NO2
  • Boiling Point212.9 °C at 760 mmHg
  • Molecular Weight89.0941
  • Flash Point82.6 °C
  • Transport InformationN/A
  • AppearanceWhite crystalline powder
  • Safety24/25-36-26
  • Risk Codes36/37/38
  • Molecular Structure
    Molecular Structure of 338-69-2 (D-Alanine)
  • Hazard SymbolsIrritantXi
  • SynonymsIrritantXi
  • Article Data211

D-Alanine Synthetic route

80222-96-4

2-aminopropanamide hydrochloride

338-69-2

D-Alanine

Conditions
ConditionsYield
Escherichia coli JM109; pCl38DP In various solvent(s) at 30℃; for 0.15h;100%
174591-36-7

(3R,6S,1'S)-3,6-dimethyl-4-N-(1'-phenethyl)-1,4-morpholin-2,5-dione

338-69-2

D-Alanine

Conditions
ConditionsYield
With hydrogen iodide for 1h; Heating;100%

(R)-2-(2-Oxo-4-phenyl-oxazolidin-3-yl)-propionic acid

338-69-2

D-Alanine

Conditions
ConditionsYield
With ammonia; lithium In tetrahydrofuran; tert-butyl alcohol at -78℃; for 0.5h;99%

(R)-2-((R)-2-Oxo-4-phenyl-oxazolidin-3-yl)-propionic acid

338-69-2

D-Alanine

Conditions
ConditionsYield
With ammonia; lithium In tetrahydrofuran; tert-butyl alcohol at -78℃; for 0.5h; Birch reduction;99%
127-17-3

2-oxo-propionic acid

338-69-2

D-Alanine

Conditions
ConditionsYield
With isopropylamine In aq. buffer at 37℃; for 24h; pH=7.0; Enzymatic reaction;95%
With D-glucose; Bacillus subtilis glucose dehydrogenase; Symbiobacterium thermophilum meso-Diaminopimelate dehydrogenase W121L/H227I mutant; NADP; ammonium chloride In aq. buffer at 37℃; for 24h; pH=8.5; Kinetics; Reagent/catalyst; Enzymatic reaction;49%
With ammonium hydroxide; D-amino acid oxidase In phosphate buffer for 10h; pH=6.5; Reduction; Electrochemical reaction;
Conditions
ConditionsYield
With water at 170℃; for 0.05h; Microwave irradiation;95%
21028-13-7

(R)-(+)-2-hydrazinopropionic acid

338-69-2

D-Alanine

Conditions
ConditionsYield
With hydrogen; platinum(IV) oxide92%
127-17-3

2-oxo-propionic acid

A

56-41-7

L-alanin

B

338-69-2

D-Alanine

Conditions
ConditionsYield
With CC10H14NOSCH2CH2CH3N(CH3)2 (5); zinc diacetate In methanol at 30℃; Product distribution; pH 4.00; other reagents;A 9%
B 91%
With 5-((3-(dimethylamino)propyl)thio)-4-(aminomethyl)-3-hydroxyl-5,6,7,8-tetraquinoline In methanol at 30℃; Product distribution; stereoselective transamination at pH=4.00, various reagents and pH;A 7 % Chromat.
B 93 % Chromat.
With ethylenediaminetetraacetic acid; D-(R)-phenylalanine at 20℃; for 24h; pH=8; Product distribution; Further Variations:; Reagents; transamination;
143746-61-6

(3R,6R)-1,4-N,N-((S)-1-phenyleth-1-yl)-3,6-dimethylpiperazine-2,5-dione

338-69-2

D-Alanine

Conditions
ConditionsYield
With hydrogen iodide for 1h; Heating;90%

(R)-2-tert-Butoxycarbonylamino-propionic acid 2-hydroxy-ethyl ester

338-69-2

D-Alanine

Conditions
ConditionsYield
With trimethylsilyl iodide In chloroform for 0.0833333h;88%

D-Alanine Chemical Properties

Molecular Structure:

Molecular Formula: C3H7NO2
Molecular Weight: 89.0932
IUPAC Name: (2R)-2-Aminopropanoic acid
Synonyms of D-Alanine (CAS NO.338-69-2): Alanine D-form ; (R)-2-Aminopropionsaeure ; (R)-Alanine ; Alanine, D- ; Ba 2776 ; D-alpha-Aminopropionsaeure ; EINECS 206-418-1 ; NSC 158286
CAS NO: 338-69-2
Classification Code: Amino Acids Derivatives ; Amino ACIDS SERIES ; Amino Acids ; PROTECTED AMINO ACID & PEPTIDES ; Alanine [Ala, A] ; Amino Acids and Derivatives ; alpha-Amino Acids ; Biochemistry ; Amino Acids and Derivatives ; GABA/Glycine receptor ; alanine ; amino acid ; organic acids ; pharmaceutical intermediate
Melting Point: 291 °C
Index of Refraction: 1.459
Molar Refractivity: 21 cm3
Molar Volume: 76.7 cm3
Surface Tension: 45.8 dyne/cm
Density: 1.161 g/cm3
Flash Point: 82.6 °C
Enthalpy of Vaporization: 49.5 kJ/mol
Boiling Point: 212.9 °C at 760 mmHg
Vapour Pressure: 0.0661 mmHg at 25°C

D-Alanine Uses

 D-Alanine (CAS NO.338-69-2) can be used for synthesis of  new sweetener and materials of some chiral drugs' intermediates.

D-Alanine Safety Profile

Hazard Codes of D-Alanine (CAS NO.338-69-2): IrritantXi
Risk Statements: 36/37/38 
R36/37/38: Irritating to eyes, respiratory system and skin.
Safety Statements: 24/25-36-26 
S24/25: Avoid contact with skin and eyes. 
S36: Wear suitable protective clothing. 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
WGK Germany: 3
HazardClass: IRRITANT  

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