Active pharmaceutical ingredient (revision 14)
Old revision·21:55, 9 May 2025·CategoryBot
| Active pharmaceutical ingredientRegulatory category | |
|---|---|
| Abbreviation | API |
| Definition source | ICH Q7 |
| Distinct from | Excipient; finished product |
| Registered in | A drug master file in many jurisdictions |
| Topic infobox · conventions | |
An active pharmaceutical ingredient (API) is a substance intended to be used in the manufacture of a medicinal product and to furnish pharmacological activity in it. The term is a regulatory category rather than a chemical one: the same molecule is an API when destined for a medicine and is not when destined for laboratory research.[1]
That distinction determines which requirements apply. API manufacture is subject to GMP and to registration in many jurisdictions; the same chemistry performed for research supply is not.[1]
The practical consequence is that "pharmaceutical grade" applied to a research chemical is not a defined term. Where it means anything, it means the supplier's own grade designation, and what it covers is whatever the accompanying specification says.[2]
The regulatory frame
[edit]Guidance for APIs covers the same ground as finished-product GMP, adapted to bulk substance: materials, process controls, validation, records, and the point in a process at which GMP begins to apply — which for a synthetic API is generally the introduction of the starting material into the process.[1]
Registration mechanisms vary. A drug master file allows a manufacturer to submit confidential process detail to a regulator and to authorise a customer to reference it; other jurisdictions use certificates of suitability or direct registration.
None of this applies to a research chemical. A supplier may nonetheless hold registrations for other product lines, and such a registration is a checkable claim in the sense described at Good manufacturing practice — with a registrant, a number and a scope.[3] Documents submitted to this wiki that assert such registrations vary widely in whether they supply those particulars.[4]
Grade terminology
[edit]| Term | Status |
|---|---|
| API | Defined regulatory category |
| Compendial grade | Meets a named pharmacopoeial monograph |
| Reagent grade | Meets a named reagent specification |
| Pharmaceutical grade | Not a defined term for research supply |
| Research grade | Not a defined term |
The first three are checkable because each names something external — a regulation, a monograph, a specification. The last two are supplier designations, and their meaning is exactly and only what the accompanying specification states.[2]
This is not a criticism of suppliers using the terms. It is an observation that a grade name is not a specification, and that the question worth asking of any grade claim is which document defines it.
See also
References
- ^ a b c International Council for Harmonisation, Q7: Good Manufacturing Practice Guide for Active Pharmaceutical Ingredients (2000).
- ^ a b United States Pharmacopeia, General Chapter <1503>, Quality Attributes of Synthetic Peptide Drug Substances.
- ^ ISO 9001:2015, Quality management systems — Requirements.
- ^ PeptidePedia Wiki community test-report tally, 2024–2026 (self-reported; see Project:Sourcing guidelines).