Definition
What is an API (active pharmaceutical ingredient)?
An API, or active pharmaceutical ingredient, is the component of a drug product intended to furnish pharmacological activity, as 21 CFR 210.3 defines it. The word describes a manufacturing regime rather than a purity figure: material made under ICH Q7 from a defined starting material, with an impurity profile qualified under ICH Q3A, stability data under ICH Q1A, and usually a Drug Master File a filer can reference. A compound is not an API because it is pure. It is an API because a regulated manufacturing system stands behind it.
What has to be true before a compound can be called an API?
Five things, and a purity figure is not one of them. Each one is a body of work with a document at the end, which is why API-grade supply takes years rather than a better column.
- A defined starting material, with the point where GMP begins written down and defensible.
- Manufacture under ICH Q7 from that point forward — the good-manufacturing-practice guide written specifically for active ingredients, not for finished drugs.
- An impurity profile qualified under ICH Q3A: every impurity above the reporting threshold identified, and the ones above the qualification threshold justified toxicologically.
- Stability data under ICH Q1A, run in the container the material actually ships in, long enough to support a retest date.
- A Drug Master File, in practice, so a sponsor can reference the chemistry in a filing without the manufacturer handing over its process.
Is any cannabinoid an API today?
One is, and it is not one of the compounds on this site. Cannabidiol is the active ingredient in an approved epilepsy drug, which makes CBD an API in the only sense the word carries — there is an approved product, a filing, and a manufacturing system inspected against it.
For CBG, CBGA, CBGV, CBDV, THCV, CBN and Cannflavin A the answer is no. No approved drug anywhere uses any of them as its active ingredient, which means nothing sold under those names today is an API however the datasheet is worded. A supplier using the phrase is describing a manufacturing system they believe in, not a regulatory status they hold.
What do people mean by 'API CBG', 'CBG API' and 'pharma grade CBG'?
Usually the same thing, and usually not what the words say. The phrases are typed interchangeably — API CBG and CBG API return the same intent, as do API CBN and CBN API, API THCV and THCV API. Behind all of them sits a formulator asking a reasonable question: is this material good enough to put in a regulated product?
The table below is what each phrase actually commits a supplier to, and the question that turns it into something checkable. None of this is pedantry. A purchase order written against 'pharma grade' has no specification behind it, and a dispute over one has nothing to arbitrate.
So what is Peregrine doing about it?
Building the thing the phrase describes, rather than borrowing the phrase. Today the catalogue is research-grade isolate at ≥99.9% with identity and assay on a certificate for the lot, sold from 5 g to 100 kg, and described as exactly that.
Peregrine is working to supply all of it — API-grade material, certified standards and GMP-declared volume — at research and industrial scale worldwide, through its own patented synthesis process. Synthesis, registration and stability work sits with the NatSyn Lab at McMaster University, which holds the intellectual property behind the platform.
| The phrase | What it usually means | The question that settles it |
|---|---|---|
| CBG API · API CBG | High-purity isolate the seller believes is good enough for pharmaceutical use | Which ICH Q7 audit, by whom, and may I see the report? |
| API CBGA · API CBGV · API CBDV · API THCV · API CBN · API Cannflavin A | The same phrase with the words swapped — searched both ways, meaning the same thing | Identical question: which regime, whose audit, and where is the report? |
| GMP CBG · GMP ingredients | A certificate against one of four unrelated GMP regimes | Which GMP — ICH Q7, 21 CFR 211, 21 CFR 111 or ISO 22716? |
| Pharma grade CBG | Nothing defined. No regulation fixes the phrase | What is the actual specification — identity method, assay basis, impurity list? |
| CBG standard · CBG reference standard | A certified reference material in a milligram vial, not a jar | Is the producer accredited to ISO 17034, and is the value traceable? |
| Bulk CBG API · sample CBG API | Volume or a trial quantity of the above | Same questions, then: what is the lot, and what ships with it? |
What each phrase commits a supplier to, and what to ask
Questions
What does API stand for in pharmaceuticals?
Active pharmaceutical ingredient: the component of a drug product intended to furnish pharmacological activity or otherwise affect the structure or function of the body, as defined in 21 CFR 210.3.
What is an API, Active Pharmaceutical Ingredient, in plain terms?
The part of a medicine that does the work, made under a regulated system that can prove it did. 21 CFR 210.3 supplies the definition and ICH Q7 supplies the manufacturing requirements; together they are what separates an API from a very pure chemical.
Is an API the same as a pure compound?
No. Purity is one line on the specification. An API is material made under ICH Q7 with a qualified impurity profile and stability data behind it, which is a manufacturing regime rather than a number on a certificate.
Can I buy a cannabinoid API?
Not for CBG, CBGA, CBGV, CBDV, THCV, CBN or Cannflavin A. No approved drug uses any of them as its active ingredient, so no supplier holds that status today whatever the datasheet says.
What is a Drug Master File?
A confidential submission to a regulator describing how a material is made. It lets a drug sponsor reference the chemistry in a filing without the manufacturer disclosing its process to the sponsor.
Does Peregrine supply API-grade cannabinoids?
Not today. Peregrine supplies research-grade isolate at ≥99.9% with a lot certificate, and is working toward API-grade supply through its own synthesis process.
Sources
- 21 CFR 210.3(b)(7)FDA's definition of an active ingredient
- ICH Q7Good Manufacturing Practice Guide for Active Pharmaceutical Ingredients, Step 4, 2000
- ICH Q3A(R2)Impurities in New Drug Substances, Step 4, 2006
- ICH Q1A(R2)Stability Testing of New Drug Substances and Products, Step 4, 2003
- 21 CFR 211Current good manufacturing practice for finished pharmaceuticals
The vocabulary
- API grade vs research grade: what actually changesThe molecule is the same. What differs is how much of its history is documented, and who answers for it.
- Where do I buy a cannabinoid reference standard?Who actually sells them, what the certificate must say, and why ISO 17034 and 17025 are not interchangeable.
- GMP ingredients: which GMP, and what each one coversFour unrelated regimes share the word. Which certificate means what, and the three questions that settle a claim.
- What does pharma grade mean?An empty phrase doing a real job badly — and the five-line specification that replaces it.
- How do you qualify a cannabinoid API supplier?Directory listings promise DMF and CEP against compounds that can hold neither. The questions that separate a manufacturer from a broker.
By compound
- CBG — API, standard and GMP statusNo approved drug uses CBG, no USP standard exists, and what GMP CBG usually means.
- CBGA — API, standard and GMP statusThe precursor acid: no monograph, no drug programme, and what its stability question is.
- CBGV — API, standard and GMP statusThe varin branch precursor: scarce, campaign-based, no monograph.
- CBDV — API, standard and GMP statusThe one with real clinical history — and what missing an endpoint does and does not change.
- THCV — API, standard and GMP statusWhere today's purity falls short of an API bar, stated plainly.
- CBN — API, standard and GMP statusThe only one with any pharmacopoeial presence — and why an impurity limit is not a standard.
- Cannflavin A — API, standard and GMP statusA prenylated flavone, not a cannabinoid: preclinical, milligram-scale, no bulk supply anywhere.