C15H12O5

C15H12O5 is a molecular formula representing a class of organic compounds that share the same elemental composition but may have different connectivity (constitutional isomers) and stereochemistry. The formula denotes 15 carbon atoms, 12 hydrogen atoms, and 5 oxygen atoms. Its nominal molar mass is about 272.26 g/mol. The degree of unsaturation (double bond equivalents) is 10, indicating multiple rings and/or multiple pi bonds within molecules that fit this formula.

Because the formula does not specify structure, many isomers are possible, spanning polycyclic aromatics with various oxygen-containing functional groups, such as carbonyls, hydroxyls, ethers, or esters. Without a defined structure, properties such as melting point, solubility, and reactivity vary widely among isomers. The specific arrangement of atoms governs reactivity and applications.

In chemical literature, C15H12O5 may appear as a formula for natural products fragments, synthetic intermediates, or pigment/dye components, among others. The exact identity is determined by structural analysis.

Identification and characterization typically rely on spectroscopic and spectrometric data. Accurate mass measurement by high-resolution mass spectrometry can confirm the molecular formula, while nuclear magnetic resonance (NMR) spectroscopy and infrared (IR) spectroscopy help elucidate connectivity and functional groups. When crystals are available, X-ray crystallography can provide definitive structural information, differentiating among possible isomers.

Safety and handling depend on the specific compound corresponding to the formula. General chemical safety practices apply, including appropriate storage, handling, and disposal, until the exact identity and properties are known.