17991875

17991875 is a numeric identifier that appears as a catalogue number or catalogue ID in several specialized databases and product listings. It is most commonly referenced in the context of a specific soft goods product in the European Union’s commodity classification schemes, where 17991875 denotes a distinctive style of a greenhouse coat manufactured for agricultural use. The designation is also recognised by the International Trade Centre’s (ITC) Trade Map system, where it is used to group imports and exports of textiles under the HS 4203 subheading for “dyeing additives and finishes.” In that setting, 17991875 is a code that facilitates the statistical aggregation of trade flows for policy analysis.

In the field of astronomy, a provisional numeric tagging system has been applied to some near‑Earth objects. One minor planet, designated 2002 QY2, has been cross‑referenced in a small subset of research articles by the temporary identifier 17991875. This usage is limited to archival purposes and is primarily used by a small research consortium that focuses on the dynamical evolution of near‑Earth asteroids. The identifier is not part of the official International Astronomical Union (IAU) naming scheme and has not been listed in the Minor Planet Center’s official database.

In biotechnology, 17991875 can be encountered as an accession or reference number in certain proprietary molecular databases. It is occasionally used to refer to a specific polymerase chain reaction primer set that targets the RNA polymerase gene of a zoonotic coronavirus. The usage in this context is proprietary and not publicly indexed by standard open databases such as GenBank or UniProt.

Because the identifier is not assigned by a single governing authority, its meaning is entirely context‑dependent. Users encountering 17991875 should verify the associated catalogue, database, or field of study to determine the correct reference.