CH3CHS

CH3CHS is not a unique chemical name. In chemical notation it may function as a fragment or shorthand and can refer to more than one distinct species depending on the context. It is sometimes encountered in SMILES-like strings, reaction schemes, or databases as part of a larger structure. Because SMILES and related notations omit many hydrogens by default, CH3CHS by itself does not specify a single unambiguous structure; the actual connectivity and valence must be inferred from surrounding symbols such as parentheses, rings, or additional atoms.

Possible interpretations include a methyl group (CH3) linked to a thio-substituted carbon or to a sulfur-containing substituent; for instance, it may appear as a fragment of an ethylthio (–CH2–CH3 attached to S) or a thioether chain in a larger molecule. In conventional nomenclature, one would typically name related species explicitly, such as ethanethiol (ethyl mercaptan, CH3CH2SH) or various thioether fragments (R–S–R').

Because CH3CHS is not a standard standalone compound, there is no fixed set of properties (boiling point, melting point, hazard) associated with it. Any physical properties would depend on the full connectivity and substituents of the molecule containing this fragment. When encountered, researchers should consult the exact structural diagram or SMILES string to determine identity.

See also: SMILES notation, organosulfur compounds, thiols, thioethers, ethyl mercaptan.