There is no known chemical compound named "Amgen-23" in scientific literature or public chemical databases. Amgen is a biopharmaceutical company, and compounds associated with it are typically drug candidates or biologics, often designated by internal or development codes. If "Amgen-23" refers to a research compound or experimental drug, its applications would likely be in therapeutic areas such as oncology, inflammation, or cardiovascular disease, depending on its mechanism of action. However, without verified information, specific applications cannot be determined.