149158C

149158C is a fictional alphanumeric designation used here to illustrate how catalog numbers and accession codes function across scientific databases. The label combines a numeric sequence with a trailing letter, a pattern commonly seen in real-world identifiers intended to distinguish variants, copies, or versions within a collection.

In practice, the exact object or entry that a code like 149158C refers to depends entirely on the database or catalog in which it appears. The same code can denote different items in separate contexts, so accurate identification requires consulting the surrounding metadata and the source record. Typical metadata that aids disambiguation includes the database name, the date of entry, the version or revision number, and any accompanying descriptive fields such as organism, project name, or material type.

Common domains where similar codes are used include astronomy (where numerical designations identify objects and letters may denote components or observational sets), chemistry (where registry numbers and suffixes distinguish related compounds), and biology (where accession numbers or locus tags with suffixes indicate specific sequences or variants). In each case, researchers rely on cross-references, metadata, and citations to determine exactly what 149158C represents in a given instance.

Limitations of such codes are evident when taken in isolation: without context, the identifier does not uniquely define a single item. Proper use involves linking the code to its database, record title, and associated metadata. See also: accession numbers, cataloging systems, disambiguation practices. References: none, as this entry serves as a methodological illustration.