C4H5N3
95.1 g/mol
Pharmaceutical IntermediateWarning
2-Aminopyrazine
CAS5049-61-6EC225-748-7
Category
Pharmaceutical Intermediate
Compound Class
Amine
Primary Use
Pharmaceutical Intermediate
2-Aminopyrazine is a pharmaceutical intermediate used in the synthesis of antiviral compounds, including the active pharmaceutical ingredient of favipiravir. It serves as a building block in the production of pyrazinecarboxamide derivatives for research and manufacturing applications.
Intermediate for favipiravir synthesisBuilding block for antiviral research compounds
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
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
Customs Tariff Classification
The international HS code for 2-Aminopyrazine (CAS 5049-61-6) 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
pyrazin-2-amine
InChIKey
XFTQRUTUGRCSGO-UHFFFAOYSA-N
SMILES
C1=CN=C(C=N1)N
Synonyms (14)
- 1,2-Dihydro-2-iminopyrazine
- 2-Aminopyrazine
- 2-Pyrazinamine
- 2-aminopyrazin
- 3-AMINOPYRAZINE
- Aminopyrazine
- Pyrazinamine
- Pyrazine, 2-amino-
- Pyrazine, amino-
- Pyrazine,2-dihydro-2-imino-
- iminopyrazine
- pyrazineamine
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