5-CARBOXYPHTHALIDE
UNII 9NF25F2LUE

Substance Identification & Data

This profile provides standardized clinical and technical data for 5-carboxyphthalide, uniquely identified by the FDA Unique Ingredient Identifier (UNII) 9NF25F2LUE.

Technical mappings include the Chemical Abstracts Service (CAS) Registry Number 4792-29-4 and the RxNorm Concept ID (RxCUI) N/A. Explore the sections below for detailed nomenclature and a complete directory of NDC-listed products containing this ingredient.

FDA UNII Code
9NF25F2LUE
CAS Registry Number
4792-29-4
RxNorm Concept ID
N/A

Detailed Substance Profile

Preferred Name
5-CARBOXYPHTHALIDE
Official standardized name for this substance within the FDA UNII nomenclature system.
InChIKey
C9H6O4
International Chemical Identifier digital signature for unique molecular identification.
SMILES String
QTWUWCFGWYYRRL-UHFFFAOYSA-N
Line notation for describing the chemical structure and connectivity of atoms.
PubChem CID
Unique identification number in the NCBI database of chemical substances.
Substance Type
chemical
ISO 11238 classification category (e.g., Chemical, Polymer, Protein).
Ingredient Role
c1cc2c(cc1C(=O)O)COC2=O

Synonyms and Nomenclature

This section provides a complete list of nomenclature and identifier mappings for 5-carboxyphthalide. Identifiers are organized into official regulatory terms, commercial trade names, and technical systematic synonyms used to ensure accurate identification across clinical pharmaceutical databases, regulatory filings, and electronic health records.

Systematic Nomenclature

1,3-DIHYDRO-1-OXO-5-ISOBENZOFURANCARBOXYLIC ACID
1,3-DIHYDRO-1-OXOISOBENZOFURAN-5-CARBOXYLIC ACID
1-OXO-1,3-DIHYDROISOBENZOFURAN-5-CARBOXYLIC ACID
5-CARBOXYPHTHALIDE
5-ISOBENZOFURANCARBOXYLIC ACID, 1,3-DIHYDRO-1-OXO-
5-PHTHALANCARBOXYLIC ACID, 1-OXO-
PHTHALIDE-5-CARBOXYLIC ACID