Product Name

  • Name

    Methyl L-pyroglutamate

  • EINECS 225-567-3
  • CAS No. 4931-66-2
  • Article Data155
  • CAS DataBase
  • Density 1.204 g/cm3
  • Solubility
  • Melting Point
  • Formula C6H9NO3
  • Boiling Point 304.7 °C at 760 mmHg
  • Molecular Weight 143.142
  • Flash Point 138.1 °C
  • Transport Information
  • Appearance Brown oil
  • Safety 26-36
  • Risk Codes 36/37/38
  • Molecular Structure Molecular Structure of 4931-66-2 (Methyl L-pyroglutamate)
  • Hazard Symbols IrritantXi
  • Synonyms Pyroglutamicacid, methyl ester, L- (6CI,7CI);(2S)-5-Oxopyrrolidine-2-carboxylic acidmethyl ester;(S)-5-(Methoxycarbonyl)-2-pyrrolidinone;(S)-5-(Methoxycarbonyl)-2-pyrrolidone;5-Oxo-L-proline methyl ester;L-5-Oxoproline methyl ester;L-Pyroglutamic acid methyl ester;Methyl(S)-(+)-2-oxopyrrolidine-5-carboxylate;Methyl(S)-2-oxopyrrolidine-5-carboxylate;Methyl (S)-pyroglutamate;Methyl N-BOC-(S)-pyroglutamate;
  • PSA 55.40000
  • LogP -0.23320

Methyl L-pyroglutamate Chemical Properties

L-Pyroglutamic acid methyl ester(4931-66-2) is also named as methyl (S)-(+)-2-pyrrolidone-5-carboxylate;H-pyroGlu-OMe; L-Pyroglutamic Acid Methyl Ester; H-Pyr-OMe;L-PYROGLUTAMIC ACID METHYL ESTER;H-PGLU-OME,and so on.L-Pyroglutamic acid methyl ester(4931-66-2) is white crystalline powder.

CAS: 4931-66-2
Molecular Formula: C6H9NO3
Molecular Weight: 143.14
Molecular strcuture:
EINECS: 225-567-3
Boiling point:  90°C (0.3 mmHg)
Alpha:  10.5 °(c=1, EtOH)
Density:  1.226
Refractive index:  1.486
Storage temp.:  Store at 0-5°C
Index of Refraction: 1.465 
Molar Refractivity: 32.87 cm
Molar Volume: 118.8 cm3 
Polarizability: 13.03 10-24cm3 
Surface Tension: 39.2 dyne/cm 
Flash Point: 138.1 °C 
Enthalpy of Vaporization: 54.51 kJ/mol 
Vapour Pressure: 0.000859 mmHg at 25°C 

Methyl L-pyroglutamate Uses

L-Pyroglutamic acid methyl ester(4931-66-2) is commonly used as an organic reagent.

Methyl L-pyroglutamate Safety Profile

Hazard Codes:  Xi
Risk Statements:  36/37/38
Safety Statements:  26-36
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