C5H7NO3
129.11 g/mol
Food AdditiveDanger
L-Pyroglutamic acid
CAS98-79-3EC202-700-3
Category
Food Additive
Compound Class
Natural Product
Primary Use
food additive and antioxidant
L-Pyroglutamic acid is a naturally occurring amino acid derivative formed by the cyclization of glutamic acid. It is widely used as a food additive and antioxidant in various products.
food additiveantioxidant
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Related Compounds
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Referencestereoisomer of
Magnesium pidolate
CAS135701-98-3
research compound
Referencestereoisomer of
(RS)-pyroglutamic acid
CAS149-87-1
research compound
Referencestereoisomer of
Copper pidolate
CAS15454-74-7
analytical reagent for copper supplementation
Safety Reference
Danger
H315Causes skin irritation
H318Causes serious eye damage
H319Causes serious eye irritation
H335May cause respiratory irritation
Customs Tariff Classification
The international HS code for L-Pyroglutamic acid (CAS 98-79-3) is 2933.79.
HS code (international, 6-digit)
2933.79
EU CN code (8-digit)
2933 79 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
(2S)-5-oxopyrrolidine-2-carboxylic acid
InChIKey
ODHCTXKNWHHXJC-VKHMYHEASA-N
SMILES
C1CC(=O)N[C@@H]1C(=O)O
Synonyms (93)
- Acide pidolique [INN-French]
- Acido pidolico [INN-Spanish]
- Acidum pidolicum [INN-Latin]
- Pidolic acid, European Pharmacopoeia (EP)
- Pyroglutamic Acid, United States Pharmacopeia (USP)
- (-)-Pyroglutamate
- (S)-PYROGLUTAMIC ACID
- (S)-Pyroglutamate
- 2-L-Pyrrolidone-5-carboxylate
- 2-Pyrrolidinone-5-carboxylate
- 2-Pyrrolidone-5-carboxylate
- 5-Carboxy-2-pyrrolidinone
- 5-L-Oxoproline
- 5-OXOPROLINE
- 5-Pyrrolidinone-2-carboxylate
- 5-oxo-L-proline
- AJIDEW A-100
- Acide pidolique
- Acido pidolico
- Acidum pidolicum
- GLUTIMIC ACID
- GLUTIMINIC ACID
- Glutimate
- Glutiminate
- H-Pyr-OH
- L-2-Pyrrolidone-5-carboxylate
- L-5-Carboxy-2-pyrrolidinone
- L-5-Oxoproline
- L-GLUTIMIC ACID
- L-GLUTIMINIC ACID
- L-Glutamic Acid Lactam
- L-Glutamic acid g-lactam
- L-Glutamic acid gamma-lactam
- L-Glutimate
- L-Glutiminate
- L-Proline, 5-oxo-
- L-Pyroglutamate
- L-Pyroglutamic acid
- L-Pyroglutamic acid, BioXtra
- L-Pyrrolidinonecarboxylate
- L-Pyrrolidonecarboxylate
- L-pca
- Oxopyrrolidinecarboxylate
- Oxopyrrolidinecarboxylic acid
- PYRROLIDINONECARBOXYLIC ACID
- PYRROLIDONE-5-CARBOXYLIC ACID
- Pidolate
- Pidolic acid
- Pidolic acid CRS
- Pidolidone
- Proline, 5-oxo-
- Proline, 5-oxo-, L-
- Pyr-OH
- Pyroglutamic acid
- Pyroglutamic acid, l-
- Pyrrolidinonecarboxylate
- Pyrrolidonecarboxylic acid
- Rec-PGA 273K
- l-pyrrolidone carboxylic acid
- oxo-proline
- pGlu
- pGlu-OH
- pyroglu
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