: At Sigma-Aldrich , 123864 is associated with CapSeal Bullet Capillary Ferrules , which are short-design components used for 0.10–0.25 mm columns.

: A 2026 study in the journal Biomaterials (Article 123864) focuses on using conformation-specific single-domain antibodies, or nanobodies , to target Glypican-4.

For chemists and lab technicians, this number refers to specific hardware and catalogs: