nirmatrelvir

CHEBI:170007 ·resolve ·ANTIVIRAL ·EXACT SEEDED

An azabicyclohexane that is (1R,5S)-3-azabicyclo[3.1.0]hexane substituted by {(1S)-1-cyano-2-[(3S)-2-oxopyrrolidin-3-yl]ethyl}aminoacyl, 3-methyl-N-(trifluoroacetyl)-L-valinamide, methyl and methyl groups at positions 2S, 3, 6 and 6, respectively. It is the first orally administered inhibitor of SARS-CoV-2 main protease developed by Pfizer and used in combination with ritonavir for the treatment of COVID-19. — ChEBI

Machine-generated and unreviewed. Identity, structure and cross-references come straight from ChEBI's and CARD's own data; no curator has signed off on this record yet.

Classification

Strictly broader compounds or drug classes this molecule belongs to.

CHEBI:140325 CHEBI:140325
CHEBI:140326 CHEBI:140326
CHEBI:170008 CHEBI:170008
CHEBI:18379 CHEBI:18379
CHEBI:37143 CHEBI:37143
CHEBI:46770 CHEBI:46770
CHEBI:74223 CHEBI:74223

Chemical structure

Computed structure properties
Molecular formula	C23H32F3N5O4
Charge	0
Average mass	499.534 Da
Monoisotopic mass	499.24064 Da
Source	ChEBI
InChIKey	LIENCHBZNNMNKG-OJFNHCPVSA-N

SMILES

[H][C@@]1(C[C@@H](C#N)NC(=O)[C@H]2N(C(=O)[C@@H](NC(=O)C(F)(F)F)C(C)(C)C)C[C@]3([H])C(C)(C)[C@]23[H])CCNC1=O

InChI

InChI=1S/C23H32F3N5O4/c1-21(2,3)16(30-20(35)23(24,25)26)19(34)31-10-13-14(22(13,4)5)15(31)18(33)29-12(9-27)8-11-6-7-28-17(11)32/h11-16H,6-8,10H2,1-5H3,(H,28,32)(H,29,33)(H,30,35)/t11-,12-,13-,14-,15-,16+/m0/s1

Also called

nirmatrelvirum (INN)— chebi
(1R,2S,5S)-N-{(1S)-1-cyano-2-[(3S)-2-oxopyrrolidin-3-yl]ethyl}-6,6-dimethyl-3-[3-methyl-N-(trifluoroacetyl)-L-valyl]-3-azabicyclo[3.1.0]hexane-2-carboxamide (EXACT_SYNONYM)— chebi
PF 07321332 (EXACT_SYNONYM)— chebi
PF-07321332 (EXACT_SYNONYM)— chebi
PF07321332 (EXACT_SYNONYM)— chebi

Cross-references

Equivalent identifiers for this same structure in other resources.

Activity roles

Every antimicrobial role a source asserts for this compound — the unreduced evidence behind its antimicrobial_class.

CHEBI:149553 CHEBI:149553

Source concepts

Every upstream concept that resolved to this record. The merge is the product: this is what shows ChEBI and CARD are describing the same structure.

Upstream concepts merged into this record
Source	Native ID	Label	Minted CURIE	Version
CHEBI	`CHEBI:170007`	nirmatrelvir	`antibioticmech:chebi-c288da7a4b`	2026-08-30

Mechanism summary

Mode of action: VIRAL_PROTEASE_INHIBITION microbial target — Assigned from ChEBI role CHEBI:147285 (EC 3.4.22.69 (SARS coronavirus main proteinase) inhibitor). ChEBI asserts the role on the compound. The role names a target specific to the microbe or virus — see mode_of_action_target_scope. Not a curator's mechanistic review.

Curation history

SEEDED_FROM_SOURCES 2026-08-30 · seed_from_sources
Seeded from data/raw/ inventories (CHEBI)
RESEEDED_FROM_SOURCES 2026-08-30 · seed_from_sources
Re-seeded from updated data/raw/ inventories
RESEEDED_FROM_SOURCES 2026-08-30 · seed_from_sources
Re-seeded from updated data/raw/ inventories

Provenance

Seeded by scripts/seed_from_sources.py from the committed inventories in data/raw/. View the record.