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CAS RN: 149-87-1 | Product Number: G0061

DL-Pyroglutamic Acid

Purity: >99.0%(T)
  • DL-Glutamic Acid Lactam
  • 2-Pyrrolidone-5-carboxylic Acid
  • 5-Oxopyrrolidine-2-carboxylic Acid
  • H-DL-Pyr-OH
1   ≥40 
1   32  
2   ≥40 

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Product Number G0061
Purity / Analysis Method >99.0%(T)
Molecular Formula / Molecular Weight C__5H__7NO__3 = 129.12 
Physical State (20 deg.C) Solid
CAS RN 149-87-1
Reaxys Registry Number 82131
PubChem Substance ID 87570275
SDBS (AIST Spectral DB) 4073
MDL Number


Appearance White powder to crystal
Purity(HPLC) min. 98.0 area%
Purity(Neutralization titration) min. 99.0 %
Melting point 182.0 to 186.0 °C
Specific rotation [a]20/D -0.5 to +0.5 deg(C=5, water)
Solubility in Water almost transparency
Properties (reference)
Melting Point 184 °C
Solubility in water Soluble
Pictogram Pictogram
Signal Word Warning
Hazard Statements H315 : Causes skin irritation.
H319 : Causes serious eye irritation.
Precautionary Statements P264 : Wash skin thoroughly after handling.
P280 : Wear protective gloves/ eye protection/ face protection.
P302 + P352 : IF ON SKIN: Wash with plenty of water.
P337 + P313 : If eye irritation persists: Get medical advice/ attention.
P362 + P364 : Take off contaminated clothing and wash it before reuse.
P332 + P313 : If skin irritation occurs: Get medical advice/ attention.
Related Laws:
EC Number 205-748-3
Transport Information:
HS Number 2933790090
PubMed Literature

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