4-HYDROXYISOPHTHALIC ACID
UNII P87FF77O00

Substance Identification & Data

This profile provides standardized clinical and technical data for 4-hydroxyisophthalic Acid, uniquely identified by the FDA Unique Ingredient Identifier (UNII) P87FF77O00.

Technical mappings include the Chemical Abstracts Service (CAS) Registry Number 636-46-4 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
P87FF77O00
CAS Registry Number
636-46-4
RxNorm Concept ID
N/A

Detailed Substance Profile

Preferred Name
4-HYDROXYISOPHTHALIC ACID
Official standardized name for this substance within the FDA UNII nomenclature system.
InChIKey
C8H6O5
International Chemical Identifier digital signature for unique molecular identification.
SMILES String
BCEQKAQCUWUNML-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
c1(cc(ccc1O)C(O)=O)C(O)=O

Synonyms and Nomenclature

This section provides a complete list of nomenclature and identifier mappings for 4-hydroxyisophthalic Acid. 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.

Common Names & Synonyms

4-HYDROXYISOPHTHALIC ACID [MI]
4-HYDROXY-M-PHTHALIC ACID
ACETYLSALICYLIC ACID IMPURITY B [EP IMPURITY]
ISOPHTHALIC ACID, 4-HYDROXY-
SALICYLIC ACID IMPURITY B [EP IMPURITY]
SALICYLIC ACID RELATED COMPOUND B [USP IMPURITY]
SALICYLIC ACID RELATED COMPOUND B [USP-RS]

Brand / Trade Names

EUPIRINA

Systematic Nomenclature

4-HYDROXY-1,3-BENZENEDICARBOXYLIC ACID
4-HYDROXYBENZENE-1,3-DICARBOXYLIC ACID
4-HYDROXYISOPHTHALIC ACID

Technical Codes

NSC-2445