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CAS RN: 32159-21-0 | Product Number: C3143

N-Carbobenzoxy-L-pyroglutamic Acid

Purity: >98.0%(T)(HPLC)
  • N-Cbz-L-pyroglutamic Acid
  • (S)-1-Carbobenzoxy-5-oxopyrrolidine-2-carboxylic Acid
  • (S)-1-Cbz-5-oxopyrrolidine-2-carboxylic Acid
  • Z-Pyr-OH
  • N-Benzyloxycarbonyl-L-pyroglutamic Acid
  • (S)-1-Benzyloxycarbonyl-5-oxopyrrolidine-2-carboxylic Acid
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Product Number C3143
Purity / Analysis Method >98.0%(T)(HPLC)
Molecular Formula / Molecular Weight C__1__3H__1__3NO__5 = 263.25  
Physical State (20 deg.C) Solid
Storage Temperature -20°C
Condition to Avoid Heat Sensitive
CAS RN 32159-21-0
Reaxys Registry Number 3556609
PubChem Substance ID 253660959
MDL Number


Appearance White to Almost white powder to crystal
Purity(HPLC) min. 98.0 area%
Purity(Neutralization titration) min. 98.0 %
Melting point 139.0 to 143.0 °C
Specific rotation [a]20/D -34.0 to -37.0 deg(C=1,MeOH)
Properties (reference)
Melting Point 141 °C
Specific Rotation -35° (C=1,MeOH)
Related Laws:
Transport Information:
HS Number 2933.79.8500
PubMed Literature

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