C5H4FN3O2
157.1 g/mol
APIWarning
Favipiravir
CAS259793-96-9EC856-840-0
Category
API
Compound Class
Heterocycle
Primary Use
Pharmaceutical Raw Material
Favipiravir is a pyrazinecarboxamide derivative with antiviral activity, functioning as an inhibitor of RNA-dependent RNA polymerase. It is used in pharmaceutical manufacturing as an active pharmaceutical ingredient for certain RNA virus-targeting applications.
antiviral pharmaceutical raw materialRNA polymerase inhibitor research compound
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Safety Reference
Warning
H302Harmful if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
H341Suspected of causing genetic defects
H361Suspected of damaging fertility or the unborn child
Customs Tariff Classification
The international HS code for Favipiravir (CAS 259793-96-9) is 2933.99.
HS code (international, 6-digit)
2933.99
EU CN code (8-digit)
2933 99 80
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
5-fluoro-2-oxo-1H-pyrazine-3-carboxamide
InChIKey
ZCGNOVWYSGBHAU-UHFFFAOYSA-N
SMILES
C1=C(N=C(C(=O)N1)C(=O)N)F
Synonyms (24)
- T-705
- Favipiravir (JAN/USAN/INN)
- Avigan (TN)
- Avipiravir
- Fapilavir
- Favilavir
- Favipiravir
- Favipiravir (Standard)
- Favipiravir (T-705)
- T 705,CAS;259793-96-9
- T-705 cpd
- avigan
- favipiravirum
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