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CAS RN: 4042-36-8 | Product Number: P1354

D-Pyroglutamic Acid

Purity: >98.0%(T)
  • D-Glutamic Acid Lactam
  • (R)-5-Oxopyrrolidine-2-carboxylic Acid
  • (R)-2-Pyrrolidone-5-carboxylic Acid
  • H-D-Pyr-OH
15,00 €
4   ≥20 
45,00 €
4   ≥20 

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Product Number P1354
Purity / Analysis Method >98.0%(T)
Molecular Formula / Molecular Weight C__5H__7NO__3 = 129.12  
Physical State (20 deg.C) Solid
CAS RN 4042-36-8
Reaxys Registry Number 82133
PubChem Substance ID 87575440
SDBS (AIST Spectral DB) 41201
Merck Index (14) 8001
MDL Number


Appearance White to Almost white powder to crystal
Optical purity(LC) min. 99.0 ee%
Purity(Neutralization titration) min. 98.0 %
Melting point 159.0 to 164.0 °C
Specific rotation [a]20/D +8.0 to +12.0 deg(C=5, H2O)
Solubility in Water almost transparency
Properties (reference)
Melting Point 162 °C
Specific Rotation 10° (C=5,H2O)
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 223-735-0
Transport Information:
HS Number 2933790090
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