6-Chloro-8-fluoro-1,4-dihydroquinazolin-4-one

6-Chloro-8-fluoro-1,4-dihydroquinazolin-4-one is identified by CAS 187805-51-2 and molecular formula C8H4ClFN2O. PubChem maps the CAS to a single record, CID 135490619, with molecular weight 198.58. Its exact graph is SMILES C1=C(C=C(C2=C1C(=O)NC=N2)F)Cl, paired with InChIKey XLGDIIQWJWFZSI-UHFFFAOYSA-N. The representation contains one neutral component and no defined stereochemical element.

The fused quinazolinone framework contributes two ring nitrogens and a carbonyl at position 4. Chlorine occupies position 6 and fluorine position 8 on the benzene portion of the fused system. PubChem's IUPAC name describes the graph as 6-chloro-8-fluoro-3H-quinazolin-4-one, while its preferred Title carries the 1,4-dihydro wording. The former site expression “quinazolin-4-ol” is also present in PubChem synonyms for the same CAS/CID. The reviewed H1 follows the preferred keto representation actually encoded by SMILES.

For an identity-focused inquiry, give Rlavie CAS 187805-51-2, the complete reviewed name, and the requested quantity. Attach a MOL or SDF structure file so the 4-one carbonyl, ring hydrogen placement, and 6-chloro/8-fluoro pattern can be reconciled with PubChem CID 135490619, the verified SMILES, and InChIKey XLGDIIQWJWFZSI-UHFFFAOYSA-N. Rlavie can compare these references before request-specific details are evaluated. The full graph should control the inquiry because hydroxy and keto naming conventions can differ even when a synonym source points to this same registry entry.