DIFELIKEFALIN
UNII NA1U919MRO

Substance Identification & Data

This profile provides standardized clinical and technical data for Difelikefalin, uniquely identified by the FDA Unique Ingredient Identifier (UNII) NA1U919MRO.

Technical mappings include the Chemical Abstracts Service (CAS) Registry Number 1024828-77-0 and the RxNorm Concept ID (RxCUI) 2569089. Explore the sections below for detailed nomenclature and a complete directory of NDC-listed products containing this ingredient.

FDA UNII Code
NA1U919MRO
CAS Registry Number
1024828-77-0
RxNorm Concept ID

Detailed Substance Profile

Preferred Name
DIFELIKEFALIN
Official standardized name for this substance within the FDA UNII nomenclature system.
Molecular Formula
NA1U919MRO
The specific atomic composition represented as a molecular structure string.
InChIKey
C36H53N7O6
International Chemical Identifier digital signature for unique molecular identification.
SMILES String
FWMNVWWHGCHHJJ-SKKKGAJSSA-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.
INN ID
10179
Sequential identifier assigned via the WHO International Nonproprietary Name program.
USAN ID
DE-165
Identifier assigned by the United States Adopted Names Council.
Substance Type
chemical
ISO 11238 classification category (e.g., Chemical, Polymer, Protein).
Ingredient Role
N[C@H](Cc1ccccc1)C(N[C@H](Cc2ccccc2)C(=O)N[C@@H](C(N[C@@H](C(=O)N3CCC(CC3)(C(O)=O)N)CCCCN)=O)CC(C)C)=O

Synonyms and Nomenclature

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

FDA Official Name

DIFELIKEFALIN

Common Names & Synonyms

DIFELIKEFALIN [INN]
DIFELIKEFALIN [USAN]
DIFELIKEFALIN [WHO-DD]
DIFELIKEFALIN ACETATE [JAN]

Systematic Nomenclature

4-AMINO-1-(D-PHENYLALANYL-D-PHENYLALANYL-D-LEUCYL-D-LYSYL)PIPERIDINE-4-CARBOXYLIC ACID

Technical Codes

4-PIPERIDINECARBOXYLIC ACID, N1-(D-PHENYLALANYL-D-PHENYLALANYL-D-LEUCYL-D-LYSYL)-4-AMINO-
CR845
CR-845
FE202845
FE-202845
MR13A9
MR-13A9

NDC Products Containing DIFELIKEFALIN

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