MECYSTEINE
UNII RQ6L463N3B

Substance Identification & Data

This profile provides standardized clinical and technical data for Mecysteine, uniquely identified by the FDA Unique Ingredient Identifier (UNII) RQ6L463N3B.

Technical mappings include the Chemical Abstracts Service (CAS) Registry Number 2485-62-3 and the RxNorm Concept ID (RxCUI) 29426. Explore the sections below for detailed nomenclature and a complete directory of NDC-listed products containing this ingredient.

FDA UNII Code

RQ6L463N3B

CAS Registry Number

2485-62-3

RxNorm Concept ID

29426

Detailed Substance Profile

Preferred Name

MECYSTEINE

Official standardized name for this substance within the FDA UNII nomenclature system.

InChIKey

C4H9NO2S

International Chemical Identifier digital signature for unique molecular identification.

SMILES String

MCYHPZGUONZRGO-VKHMYHEASA-N

Line notation for describing the chemical structure and connectivity of atoms.

NCI Thesaurus

C66067

National Cancer Institute reference terminology for clinical and research data.

PubChem CID

29145

Unique identification number in the NCBI database of chemical substances.

INN ID

1375

Sequential identifier assigned via the WHO International Nonproprietary Name program.

Substance Type

chemical

ISO 11238 classification category (e.g., Chemical, Polymer, Protein).

Ingredient Role

O(C)C([C@H](CS)N)=O

Synonyms and Nomenclature

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