Tetrahydrocannabinolic acid, cannabinoids, terpenes, European legality: everything you need to know about THCA explained simply and completely.
Definition
THCA (tetrahydrocannabinolic acid) is an acidic cannabinoid naturally present in the fresh cannabis plant. It is the precursor form of THC: it is found in the raw flower, before any transformation.








THCA is an acidic cannabinoid from the phytocannabinoid family. Its molecular structure includes a carboxyl group (COOH) that distinguishes it from THC. This chemical difference is what determines its unique properties and its legal status in many European countries.
Comparison
THCA and THC are two distinct molecules that are often confused. Here are the essential differences to understand these cannabinoids.
| Caractéristique | THCA | THC (Delta-9) |
|---|---|---|
| Chemical form | Acidic (raw) | Neutral (converted) |
| Presence in the plant | Natural form when fresh | Transformed by heat |
| Molecular formula | C₂₂H₃₀O₄ | C₂₁H₃₀O₂ |
| Legality in Europe | Often legal (depending on country) | Regulated (depending on threshold) |
| Delta-9 THC level | <0.3% (our products) | Variable |
| Terpene profile | Very rich, preserved | Partially altered |
THCA is legally distinct from THC in many European countries because of its different chemical structure. Our products are tested and certified with a Delta-9 THC level below the legal thresholds.
Each batch comes with a certificate of analysis from an independent laboratory guaranteeing compliance with the European standards in force.
Our Selection
Green Connection offers a complete range of premium THCA products, selected for their quality, terpene profile and concentration. Each product is tested in an independent laboratory.
Grown indoors in hydroponics, our THCA flowers offer an exceptional terpene profile and premium visual quality. Varieties: MAC 1, Amnesia 2.0, Lemon Pop, Lifter US, Northern Lights.
Cold extraction sifted at 90 microns. Piatella is one of the purest and most aromatic forms of THCA. THCA level: 60%. Our absolute bestseller.
High-end extraction with a creamy, malleable texture. Badder represents the highest THCA concentration in our catalog. THCA level: 85%. For connoisseurs.
Pollen, resins, crumble, shatter: our range of CBD and THCA extractions is designed for demanding professionals. Laboratory certification on every batch.
Science
Terpenes are aromatic compounds naturally present in cannabis and many other plants. They are responsible for the aromas and play a key role in the overall experience. Our THCA products preserve an exceptional terpene profile.
The most abundant terpene in cannabis. Earthy and fruity aromas. Present in our Northern Lights and Lifter US flowers.
Powerful lemony aromas. Very present in our Lemon Pop and Amnesia 2.0 varieties. Fruity and energizing profile.
A unique terpene that can interact with CB2 receptors. Present in Piatella. Characteristic spicy notes.
Pine forest aroma. Very present in our hybrid varieties. Fresh, resinous notes.
Floral and lavender aromas. Present in our Indica flowers and in cold extractions such as Piatella Premium.
Hops and fresh-herb aromas. Characteristic of Sativa varieties and extracts such as Pollen Amnesia.
Regulation
The legality of THCA varies from one European country to another. Here is what you need to know to understand the regulatory framework that applies to our products.
All our products comply with European regulations. The Delta-9 THC level is below the legal thresholds in force in the European Union (generally 0.3%).
Our THCA products are offered as a technical, extraction or collector raw material. They are intended for adult professionals, distributors and wholesalers.
Customer responsibility: it is up to each professional buyer to check the local regulations applicable in their country or region before any order or resale.
Laboratory certification: each batch comes with a certificate of analysis from a certified independent laboratory, stating the levels of THCA, CBD, CBG, CBN and Delta-9 THC.
Practical Tips
To preserve the quality, aroma and concentration of your THCA products, here are the recommendations from our experts.
Store your products between 15°C and 21°C. Avoid large temperature swings, which can alter the terpenes and degrade product quality.
Store in a dark place or in opaque containers. UV light is the main enemy of cannabinoids and terpenes, as it speeds up their degradation.
Keep humidity between 55% and 62% for flowers. For extractions, use airtight glass containers. Avoid excess humidity, which encourages mold.
Use glass jars with an airtight seal for extractions and resins. For flowers, the original packaging is optimal for up to 12 months.
For wholesale volumes (1kg+), we recommend a cold room at 12°C. This allows optimal preservation for up to 24 months without significant loss of quality.
Join our community of professionals and access our full catalog of premium THCA products. Volume discounts, discreet delivery, laboratory certification.
Explore
Go further with our guides, product pages and catalogue.
Frequently Asked Questions
Answers to the most frequently asked questions about THCA, its composition, its legality and our products.
THCA is legally distinct from THC in many European countries. Our products contain less than 0.3% Delta-9 THC, in line with European regulations. Each product comes with a laboratory certificate. It is up to the customer to check the local legislation in their country before ordering.
THCA (tetrahydrocannabinolic acid) is the natural acidic form present in the fresh plant. These two molecules have distinct chemical structures: THCA has a carboxyl group (COOH) that THC does not.
Yes, each batch is analyzed by a certified independent laboratory. The analyses include: cannabinoid levels (THCA, CBD, CBG, CBN, Delta-9 THC), full terpene profile, and absence of pesticides and heavy metals. Certificates are available on request for every order.
Yes, Green Connection is first and foremost a CBD and THCA wholesaler. We offer volume discounts from 100g, with competitive prices up to 10kg. Contact us on WhatsApp or Telegram to get our full wholesale price list and discuss your professional needs.
Contact us directly on WhatsApp or join our Telegram channel to access our full catalog and place an order. Indicate the products, quantities and your delivery address. Our team will reply quickly with the payment and delivery terms.
Our THCA levels vary by product: Badder 85%, Piatella 60%. Our THCA Hydro flowers also contain significant levels of natural THCA. All levels are certified by HPLC analysis in an independent laboratory.
Yes, all our deliveries are 100% discreet, with no indication of the contents on the outer packaging. We ship from Spain to all of Europe. Delivery times vary by destination. Contact us for more information on delivery options for your country.
Our products are strictly reserved for adults aged 18 and over. We work mainly with professionals: distributors, resellers, CBD shops, associations and adult individuals. Every order requires confirmation that you are of legal age and that you comply with local legislation.