- Neither RU-58841 nor pyrilutamide (KX-826) holds a marketing authorisation in any EU member state, the UK, the US or China as of October 2026.
- Neither is listed as a controlled substance under EU-wide drug law, the German BtMG, the French narcotics schedules or the Dutch Opium Act.
- EU medicines law (Directive 2001/83/EC) defines a medicine by presentation or by function; material sold strictly as a research reference with no human-use claims is outside that definition.
- REACH treats scientific research and development as work under controlled conditions below one tonne per year; registration duties start at one tonne per year.
- EU VAT on imports up to EUR 150 can be collected at checkout under IOSS; from 1 July 2026 a temporary EUR 3 customs duty per item also applies to low-value imports.
- Norwood Labs Ltd ships from the UK to all EU-27 countries with EU VAT collected at checkout, for laboratory research use only.
- In Germany, France, the Netherlands and the rest of the EU, RU-58841 and pyrilutamide are neither approved medicines nor controlled drugs. They can be lawfully supplied as reference materials for research, and only on that basis.
- The legal line is intent and presentation. The moment a seller or a product page describes use in people, the material is being marketed as an unlicensed medicine, which is unlawful across the EU.
- Shipping from the UK into the EU is routine post-2021 if the seller collects EU VAT at checkout and files the import declaration; check that before ordering from anyone.
What does EU medicines law say about these compounds?
It says nothing about them by name, and that is the point. Directive 2001/83/EC, the EU's community code on medicinal products, defines a medicine two ways: by presentation, meaning any substance "presented as having properties for treating or preventing disease in human beings", and by function, meaning any substance that "may be used in or administered to human beings" to restore, correct or modify physiological functions [1]. A substance that falls under either limb needs a marketing authorisation before it can be placed on the market. Neither RU-58841 nor pyrilutamide has one anywhere in the world. RU-58841 was dropped by its developer before completing trials; pyrilutamide has a positive China Phase 3 but no approval yet, as we set out in Pyrilutamide clinical trials. The consequence is simple: anything sold with claims about people is an unlicensed medicine and cannot lawfully be marketed. Material supplied as a laboratory reference, with no such claims, is not being presented as a medicine at all.
Are they controlled substances anywhere in the EU?
Not that we can find. Controlled-drug law in the EU is largely national, built on the UN conventions and extended by each state's own schedules. Those schedules cover narcotics, psychotropics and, in some countries, anabolic steroids and designer stimulants. Nonsteroidal androgen receptor antagonists are not on them. Germany's Betäubungsmittelgesetz, France's narcotics and psychotropics lists and the Dutch Opiumwet do not name RU-58841 or pyrilutamide, and we are aware of no member state that has scheduled either. Possession is therefore not an offence in itself; the law that applies is medicines law, and it applies to the seller's conduct, not to the molecule.
What is the position in Germany (RU58841 kaufen)?
Germany implements the EU definition almost word for word. Section 2 of the Arzneimittelgesetz (AMG) defines medicines as substances intended for use in or on the human body that are presented as having properties for the cure, alleviation or prevention of disease, or that can be used to restore, correct or influence physiological functions through a pharmacological, immunological or metabolic action [2]. Placing such a product on the market without authorisation is prohibited. A research reference material sold without any of those claims, labelled for laboratory use and not for human application, is not an Arzneimittel under section 2. German buyers should look for exactly that framing on a product page, and should treat any German-language listing that describes results or routines as a seller marketing an unlicensed medicine.
What is the position in France (RU58841 acheter)?
France's Code de la santé publique, article L5111-1, defines a médicament as any substance presented as having curative or preventive properties for human disease, or that can be used in people to restore, correct or modify physiological functions by pharmacological, immunological or metabolic action, or to make a medical diagnosis [3]. Again, this is the EU definition in national form, and the ANSM has granted no authorisation for either compound. French law is particularly strict on advertising: promoting an unauthorised medicine to the public is itself an offence. Research-use supply with no human-use claims sits outside that; anything else does not.
What about the Netherlands and the rest of the EU (RU58841 kopen)?
The Dutch Geneesmiddelenwet applies the same definition, and the pattern repeats across all 27 member states because they are all transposing one directive [4]. Each has a competent authority (BfArM in Germany, ANSM in France, CBG-MEB in the Netherlands) that would need to grant a marketing authorisation, or the European Medicines Agency would need to do so centrally, before either compound could be sold as a medicine. None has. The practical rule for a buyer anywhere in the EU is the same: the material can be lawfully bought and held as a research reference, and any seller describing human use is operating outside the law. Our UK position, which rests on the same logic under the Human Medicines Regulations, is in Is RU58841 legal in the UK?
Does REACH apply to small research quantities?
REACH is the EU chemicals regulation, and it is the framework people most often cite when asking whether a research chemical can be imported. Its registration duty falls on a manufacturer or importer of a substance "in quantities of one tonne or more per year" [5]. The regulation also defines "scientific research and development" as "any scientific experimentation, analysis or chemical research carried out under controlled conditions in a volume less than one tonne per year" [5]. Gram and sub-gram quantities of RU-58841 or pyrilutamide are many orders of magnitude below the threshold, so REACH registration is not triggered by ordering them. What does still apply is the general duty to handle chemicals safely, and the CLP rules on labelling hazardous substances, which is why a supplier should provide hazard information and storage guidance rather than a bare vial.
How does shipping from the UK into the EU work?
Since the UK left the single market, a parcel from a UK seller to an EU address is an import. Two EU rules decide what that means in practice. First, the VAT e-commerce package that took effect on 1 July 2021 created the Import One-Stop Shop (IOSS), which lets a non-EU seller charge the buyer's national VAT at checkout on consignments of intrinsic value up to EUR 150 and remit it monthly, so the parcel is not held for VAT on arrival [6]. Second, from 1 July 2026 the EU abolished the customs-duty exemption for low-value goods and applies a temporary flat EUR 3 customs duty per item on consignments up to EUR 150 from outside the EU, until 1 July 2028 [7]. A seller that uses IOSS and files the import declaration before dispatch absorbs or itemises both; a seller that does not leaves the buyer to pay VAT, duty and a carrier handling fee at the door.
Norwood Labs Ltd ships from the UK to every EU-27 country, collects EU VAT at checkout and files the import declaration for each EU parcel, so there is nothing further to pay on delivery. Transit is tracked, and the customs declaration describes the goods accurately as laboratory reference material. Details are on the shipping page. For how to assess any supplier's shipping and documentation, not just ours, see How to choose an RU58841 or pyrilutamide supplier.
What does "research use only" actually require of the buyer?
It requires that the material is bought for, and used in, laboratory research. That is the basis on which it is lawful to supply, and it is the basis on which we sell. Our product pages make no claims about use in people, our labels say not for human use, and the published sample reports on our lab results page document the identity and assay of the named samples only. They say nothing about safety or performance in humans, because nothing can: there is no approved product and no regulator has assessed one. Buyers in Germany, France, the Netherlands or anywhere else in the EU should expect exactly that framing from any supplier, and should be wary of any that offers more.
References
- Directive 2001/83/EC of the European Parliament and of the Council on the Community code relating to medicinal products for human use, Article 1(2) (consolidated text). EUR-Lex
- Gesetz über den Verkehr mit Arzneimitteln (Arzneimittelgesetz, AMG), § 2 Arzneimittelbegriff. gesetze-im-internet.de
- Code de la santé publique, article L5111-1 (définition du médicament). Légifrance
- Geneesmiddelenwet (Netherlands), consolidated text. wetten.overheid.nl
- Regulation (EC) No 1907/2006 (REACH), Article 3(23) definition of scientific research and development, and Article 6(1) registration threshold (consolidated text). EUR-Lex
- European Commission, Directorate-General for Taxation and Customs Union. Customs formalities for low value consignments: VAT and customs e-commerce rules from 1 July 2021. taxation-customs.ec.europa.eu
- European Commission, Directorate-General for Taxation and Customs Union. Guidance and legal text on temporary flat fee on low-value imports which will apply until 1 July 2028. 8 June 2026. taxation-customs.ec.europa.eu