C6H7N1O5

C6H7NO5 is a molecular formula that corresponds to several possible isomeric compounds, most of which contain a six‑carbon backbone, one nitrogen atom, and five oxygen atoms. Typical structural motifs for such a formula include heterocyclic rings such as pyrimidines or pyridines substituted with carboxyl, hydroxyl, or nitro groups, as well as open‑chain molecules such as dicarboxylic acids bearing a ketone or amide functionality. The presence of five oxygen atoms suggests a high degree of polarity, and many isomers exhibit a predicted aqueous solubility in the range of 10–200 mg mL−1.

Synthesis routes reported in the literature generally start from commercially available aromatic nitro compounds or aldehydes. Common transformations include oxidation (e.g., Jones or Swern oxidation) to introduce carboxyl groups, nitration or sulfonation followed by hydrolysis, and intramolecular condensation reactions that generate heterocycles. For open‑chain analogues, a typical method involves the Michael addition of a nitroalkene to an α‑ketoacid, followed by reduction of the nitro group to an amine and subsequent acylation. In many cases, the final step requires deprotection of protecting groups or a cyclization under acid or base catalysis.

These compounds appear in several pharmacological contexts as antibacterial, antiviral, or enzyme‑inhibitor scaffolds because of their ability to chelate metal ions and form hydrogen bonds with active‑site residues. For instance, a 3‑hydroxypyridine‑4‑carboxamide derivative with the formula C6H7NO5 has shown activity against Gram‑positive bacteria and is being evaluated as a lead for novel fluoroquinolone alternatives. Safety data indicate that many isomers are irritant to the skin and eyes, and some may be metabolized to reactive intermediates; hence, handling requires standard laboratory precautions.

Because of the diversity of possible structures, detailed spectral data (1H NMR, 13C NMR, IR, HRMS) must be consulted to confirm identity. Comparative literature reports on physicochemical properties and bioactivity illustrate the versatility of the C6H7NO5 formula across medicinal chemistry and materials science.