Sequence information


DRAVP ID  DRAVPc073

Name   nirmatrelvir

Sequence  Not available

Molecular Formula  C23H32F3N5O4

Condition/Disease  COVID-19

Group  Approved, Investigational

Type  peptidomimetic

Description  Nirmatrelvir (PF-07321332) is an orally bioavailable 3C-like protease (3CLPRO) inhibitor that is the subject of clinical trial NCT04756531.In December 2021, the FDA granted an emergency use authorization to Paxlovid, a co-packaged product containing both nirmatrelvir and ritonavir, for the treatment of certain patients with mild-to-moderate COVID-19.Paxlovid was approved for use in Canada in January 2022 for the treatment of adult patients with mild-moderate COVID-19 and later granted conditional marketing authorization by the European Commission on January 27, 2022.

Active sequence/Structure 



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External Links


DrugBank Accession Number  DB16691

Pubchem ID  155903259

CHEMBL ID  CHEMBL4802135

UNII  7R9A5P7H32

CAS  2628280-40-8

Reference  33460213  27799534  33098476 



ClinicalTrails Information


NCT Number Study Title Condition/Disease Status Phase Sponsor
NCT05813600 Efficacy and Safety of Nirmatrelvir/​Ritonavir for Treating Omicron Variant of COVID-19 Omicron Variant of COVID-19 Completed Not Applicable Xiangao Jiang
NCT05567952 A Study to Learn About a Repeat 5-Day Treatment With the Study Medicines (Called Nirmatrelvir/​Ritonavir) in People 12 Years Old or Older With Return of COVID-19 Symptoms and SARS-CoV-2 Positivity Aft COVID-19 Completed Phase 2 Pfizer
NCT05261139 EPIC-Peds: A Study to Learn About the Study Medicine Called PF-07321332 (Nirmatrelvir)/​Ritonavir in Patients Under 18 Years of Age With COVID-19 That Are Not Hospitalized But Are at Risk for Severe D COVID-19 Recruiting Phase 2,Phase 3 Pfizer
NCT05386472 A Study to Learn About the Study Medicine (Nirmatrelvir Plus Ritonavir) in Pregnant Women With COVID-19 COVID-19 Recruiting Phase 1 Pfizer
NCT05668091 A Decentralized, Randomized Phase 2 Efficacy and Safety Study of Nirmatrelvir/​Ritonavir in Adults with Long COVID. Long COVID Completed Phase 2 Harlan M Krumholz
NCT05852873 PAxlovid loNg cOvid-19 pRevention triAl With recruitMent In the Community in Norway (PanoramicNOR) Post COVID-19 Condition, Unspecified,SARS-CoV2 Infection,COVID-19 Recruiting Phase 3 Haukeland University Hospital