Api compound?

Do you mean “API” as in Active Pharmaceutical Ingredient? Here’s a quick overview:

- What it is: The API (active pharmaceutical ingredient) is the chemical substance in a drug that produces the therapeutic effect. It’s the drug substance, distinct from excipients (inactive ingredients).

- How it’s shown: In product labeling, the API is listed under “Active ingredients” or “Drug substance” with its amount per dosage unit.

- Examples of common APIs (by category):
- Analgesics: acetaminophen (paracetamol), ibuprofen
- Antibiotics: amoxicillin, ciprofloxacin
- Antidiabetics: metformin
- Lipid-lowering: atorvastatin
- Proton pump inhibitors: omeprazole
- Antihypertensives: lisinopril, amlodipine
- Hormones/biologics: insulin (rDNA-derived), dexamethasone (steroid)

If you’re looking for something specific (e.g., the API name, CAS number, chemical structure, regulatory guidance, or how to identify it on a label), tell me what you need and I’ll tailor the answer. Do you want a definition, a list of APIs in a particular therapeutic area, or details on a specific API?