PHENYLACETIC ACID
UNII ER5I1W795A

Substance Identification & Data

This profile provides standardized clinical and technical data for Phenylacetic Acid, uniquely identified by the FDA Unique Ingredient Identifier (UNII) ER5I1W795A.

Technical mappings include the Chemical Abstracts Service (CAS) Registry Number 103-82-2 and the RxNorm Concept ID (RxCUI) 33332. Explore the sections below for detailed nomenclature and a complete directory of NDC-listed products containing this ingredient.

FDA UNII Code
ER5I1W795A
CAS Registry Number
103-82-2
RxNorm Concept ID

Detailed Substance Profile

Preferred Name
PHENYLACETIC ACID
Official standardized name for this substance within the FDA UNII nomenclature system.
Molecular Formula
ER5I1W795A
The specific atomic composition represented as a molecular structure string.
InChIKey
C8H8O2
International Chemical Identifier digital signature for unique molecular identification.
SMILES String
WLJVXDMOQOGPHL-UHFFFAOYSA-N
Line notation for describing the chemical structure and connectivity of atoms.
NCI Thesaurus
National Cancer Institute reference terminology for clinical and research data.
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
c1ccc(cc1)CC(=O)O

Synonyms and Nomenclature

This section provides a complete list of nomenclature and identifier mappings for Phenylacetic 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

.ALPHA.-TOLUIC ACID
.OMEGA.-PHENYLACETIC ACID
2-PHENYLACETIC ACID
ACETIC ACID, PHENYL-
BENZYLPENICILLIN (BENZATHINE) TETRAHYDRATE IMPURITY B [EP IMPURITY]
BENZYLPENICILLIN (PROCAINE) MONOHYDRATE IMPURITY E [EP Impurity]
BENZYLPENICILLIN POTASSIUM IMPURITY B [EP IMPURITY]
BENZYLPENICILLIN SODIUM IMPURITY B [EP IMPURITY]
PHENYLACETIC ACID
PHENYLACETIC ACID [FCC]
PHENYLACETIC ACID [FHFI]
PHENYLACETIC ACID [HSDB]
PHENYLACETIC ACID [MI]
PHENYLETHANOIC ACID
PROCAINE BENZYLPENICILLIN IMPURITY E [EP IMPURITY]
TROPICAMIDE IMPURITY D [EP IMPURITY]
TROPICAMIDE RELATED COMPOUND D [USP IMPURITY]
TROPICAMIDE RELATED COMPOUND D [USP-RS]

Technical Codes

NSC 125718

NDC Products Containing PHENYLACETIC ACID

This unique ingredient identifier is listed as an ingredient or substance in the following products in the NDC directory: