8-Fluoro-3H-quinazolin-4-one
Product Specifications
- CAS
- 187805-50-1
- MF
- C8H5FN2O
- Appearance
- off-white solid
- Synonym(s)
- 8-fluoro-1H-quinazolin-4-one；8-Fluoroquinazolin-4(1H)-one；4(3H)-Quinazolinone, 8-fluoro-；8-Fluoro-3H-quinazolin-4-one
- Shipping
- ambient temperature
- Storage
- 2-8°C
PubChem gives 8-Fluoro-3H-quinazolin-4-one as the IUPAC name for CID 135402695. CAS 187805-50-1 and formula C8H5FN2O refer to the same record. Its SMILES is C1=CC2=C(C(=C1)F)N=CNC2=O, and its InChIKey is SMHLOFQPJIEWSB-UHFFFAOYSA-N. “8-Fluoroquinazolin-4(3H)-one” is explicitly listed among PubChem synonyms.
The fused quinazolinone framework contains two ring nitrogens and a carbonyl oxygen at position 4. Fluorine is attached at position 8 on the fused benzene portion. The 3H designation specifies the hydrogen-bearing ring nitrogen in the named form. The carbonyl carbon belongs to the heterocyclic ring, and fluorine is directly ring-bound. PubChem’s Title renders the same standardized graph as 8-fluoro-3,4-dihydroquinazolin-4-one; matching SMILES and InChI show that this is not a separate catalog substance. The official InChI fixes the same hydrogen placement represented by the SMILES here. Formula C8H5FN2O contains one component, no salt fragment, and no stereochemical layer.
An inquiry should reference CAS 187805-50-1 and the preferred IUPAC H1. Include the quantity being considered, a response contact, and questions about identity records. CID 135402695 and InChIKey SMHLOFQPJIEWSB-UHFFFAOYSA-N provide exact checks when another source presents the 4(3H)-one synonym. Rlavie can connect all three naming forms through the common structure evidence. Retaining fluorine position 8 and carbonyl position 4 prevents confusion with other fluoroquinazolinones.