Every Cannabinoid Explained: THCA, Delta-8, HHC, THCP and More

What Are Hemp-Derived Cannabinoids?

Hemp plants produce over 100 cannabinoids. You've probably heard of THC and CBD, but the legal hemp market in 2026 goes way beyond those two. Cannabinoids like THCA, Delta-8, THCP, HHC, CBN, and CB9A are now available in vapes, edibles, flower, and cartridges across the United States.

All of these compounds come from hemp plants that contain less than 0.3% Delta-9 THC, making them federally legal under the 2018 Farm Bill. But they're not all the same. Some are psychoactive. Some aren't. Some hit hard. Others are subtle. And a few are so potent they make traditional Delta-9 look mild by comparison.

This guide breaks down every major cannabinoid you'll find in hemp products today. No jargon, no filler. Just what each one does, how strong it is, and which products at Vape City USA contain it.

Quick Comparison: All Cannabinoids at a Glance

Now let's dig into each one.

THCA: The Legal Powerhouse

THCA (tetrahydrocannabinolic acid) is the raw, unheated form of THC found naturally in cannabis and hemp plants. In its raw state, THCA isn't psychoactive. You could eat raw THCA flower and feel nothing. But the moment you apply heat, something called decarboxylation happens. The THCA molecule loses a carboxyl group and converts directly into Delta-9 THC.

That's the key. When you vape or smoke THCA, you're essentially consuming Delta-9 THC. The effects are virtually identical: euphoria, relaxation, pain relief, increased appetite, altered perception. The potency is comparable to traditional THC because that's what it becomes.

So why is THCA sold legally? Because the 2018 Farm Bill measures Delta-9 THC content in the raw, unheated plant material. A hemp flower with 25% THCA and 0.2% Delta-9 technically passes the legal threshold. Once you light it up, that THCA converts, but the law tests the product before decarboxylation. It's a legal gray area that's kept THCA products on the market, though several states have started closing this loophole.

Products with THCA at Vape City USA: The Geek THCX GT6000 contains a CB9A + THCP blend, and THCA flower/pre-rolls are common in the category.

Want the full breakdown? Read Does THCA Get You High? What Actually Happens When You Vape It.

Delta-8 THC: The Smooth Middle Ground

Delta-8 THC is a naturally occurring cannabinoid found in tiny amounts in hemp. Most Delta-8 products use a conversion process that transforms CBD into Delta-8 through isomerization. It's structurally almost identical to Delta-9, with one difference: the double bond sits on the 8th carbon chain instead of the 9th.

That small structural change makes a noticeable difference in effects. Delta-8 is roughly half as potent as Delta-9. Users consistently describe it as a smoother, clearer-headed experience with less anxiety and paranoia. You still feel relaxed and elevated, but without the intensity or mental fog that Delta-9 can sometimes cause.

Delta-8 was the first hemp-derived cannabinoid to hit the mainstream market after the Farm Bill. It's still one of the most popular, especially for people who find Delta-9 too intense or who live in states where recreational cannabis isn't legal.

Best for: Beginners, anxiety-prone users, daytime use, anyone who wants a mild buzz without going overboard.

Products with Delta-8 at Vape City USA: Mellow Fellow Live Resin Disposables and Mellow Fellow 2ml Cartridges contain Delta-8 in their multi-cannabinoid mood blends. The Uplift Knockout Blend also includes Delta-8 alongside THCP, CBN, and HHC.

How does it compare? See THCA vs Delta-8: Which Hemp Cannabinoid Is Right for You?

THCP: 33x Receptor Binding Power

THCP (tetrahydrocannabiphorol) was discovered by Italian researchers in 2019, and it changed the game for hemp products. THCP has a longer alkyl side chain (seven carbons instead of five), which lets it bind to CB1 receptors up to 33 times more effectively than Delta-9 THC.

That doesn't mean THCP is 33x stronger in terms of felt effects. Real-world potency depends on the concentration in the product. But even small amounts of THCP create powerful, long-lasting effects. A 2-gram disposable with THCP can hit significantly harder than a 6-gram Delta-8 device.

Effects include intense euphoria, deep body relaxation, pain relief, and sedation at higher doses. THCP isn't a casual cannabinoid. It's designed for experienced users who want maximum potency from hemp-derived products.

Best for: Experienced users, high-tolerance consumers, nighttime use, deep relaxation and pain management.

Products with THCP at Vape City USA: The full Uplift THCP Knockout series (2g CDT disposable at $29.99, 2g BDT disposable at $24.99, and 1g cartridge at $21.99) all feature THCP as the primary cannabinoid. The Geek THCX GT6000 ($34.99) also uses a CB9A + THCP blend in a 6-gram device.

HHC: The Shelf-Stable Option

HHC (hexahydrocannabinol) is a hydrogenated form of THC. Think of it like the difference between butter and margarine. Manufacturers add hydrogen atoms to the THC molecule, which changes its structure and gives it an unusually long shelf life. HHC doesn't degrade as quickly when exposed to UV light or heat, making it one of the most stable cannabinoids on the market.

In terms of effects, HHC sits between Delta-8 and Delta-9. Most users describe it as about 70-80% as strong as Delta-9, with a balanced mix of head and body effects. It's psychoactive, euphoric, and relaxing without being overwhelming. Some users report that HHC produces less anxiety than Delta-9 while still delivering a satisfying experience.

HHC has one other interesting property: because it's hydrogenated, some argue it shouldn't technically be classified as "THC." This has created legal ambiguity, and HHC's regulatory status varies by state.

Best for: Daily users, people who stock up (shelf stability), anyone who wants something between Delta-8's mildness and Delta-9's intensity.

Products with HHC at Vape City USA: Mellow Fellow blends use HHC in nearly all 10 mood formulations. The Uplift Knockout Blend also contains HHC as part of its four-cannabinoid formula.

Want a deep comparison? Read HHC vs Delta-8: Effects, Potency, Legality Compared.

Delta-10, THC-V, and the Minor Players

Delta-10 THC

Delta-10 is the lightest psychoactive cannabinoid in the THC family. It's roughly 30% as strong as Delta-9, and the effects lean toward mild energy and uplift rather than sedation. Think of it as a "functional" cannabinoid. Users describe slight mood elevation, gentle creativity boost, and very little body heaviness. Delta-10 is typically used as one component in multi-cannabinoid blends rather than on its own.

Found in: Mellow Fellow Creativity blend (HHC + Delta-8 + Delta-10 + CBD + CBG).

THC-V (Tetrahydrocannabivarin)

THC-V is nicknamed the "diet weed" or "sports car cannabinoid." At low doses, it's not very psychoactive. At higher doses, it produces a short-lasting, energetic buzz. The interesting part: THC-V may actually suppress appetite rather than stimulate it, which is the opposite of what most THC compounds do. It's also linked to focus and clarity, making it popular in daytime blends.

Found in: Mellow Fellow Charged, Clarity, and Motivation blends.

CB9A

CB9A is a newer cannabinoid that's structurally related to CBD. It has mild psychoactive properties and is known for promoting relaxation without intense euphoria or sedation. When combined with stronger cannabinoids like THCP, CB9A creates a synergistic effect that balances potency with smoothness.

Found in: Geek THCX GT6000 (CB9A + THCP blend, 6g disposable).

THC-B and THC-M

THC-B (tetrahydrocannabutol) and THC-M are trace cannabinoids that appear in some advanced blends. THC-B has strong CB1 receptor affinity (similar to THCP but less researched), while THC-M is one of the newest identified cannabinoids. Both are typically used in small amounts within multi-cannabinoid formulations.

Found in: Mellow Fellow Introvert blend (THC-B + THC-P + HHC + Delta-8 + CBN + CBG).

The Non-Psychoactive Crew: CBD, CBN, CBG

CBD (Cannabidiol)

CBD is the most widely known non-psychoactive cannabinoid. It doesn't get you high, but it interacts with the endocannabinoid system to promote calm, reduce inflammation, and ease discomfort. CBD is often included in cannabinoid blends to smooth out the effects of stronger compounds and reduce anxiety.

CBN (Cannabinol)

CBN is sometimes called the "sleepy cannabinoid." It forms naturally as THC ages and degrades. CBN is barely psychoactive on its own, but it's commonly used for sleep support and deep body relaxation. You'll find it in nighttime and relaxation-focused blends.

Found in: Mellow Fellow Tranquility and Introvert blends, Uplift Knockout Blend.

CBG (Cannabigerol)

CBG is called the "mother cannabinoid" because it's the precursor from which other cannabinoids form during plant growth. On its own, CBG is non-psychoactive and associated with focus, mental clarity, and anti-inflammatory properties. It's frequently paired with energizing cannabinoids like THC-V in daytime blends.

Found in: Nearly all Mellow Fellow blends include CBG.

H4CBD

H4CBD is a hydrogenated version of CBD. Some early research suggests it binds to CB1 receptors more effectively than standard CBD, potentially producing subtle mood-enhancing effects. It's not psychoactive in the traditional sense, but users sometimes report a gentle calming sensation that's more noticeable than regular CBD.

Found in: Mellow Fellow Charged, Motivation, Tranquility, and Recover blends.

Potency spectrum: from CBD (no high) to THCP (strongest)

How They're Made: Extraction Methods

Not all cannabinoid products are created equal. The extraction method affects flavor, potency, and overall quality:

• Live Resin — Extracted from flash-frozen hemp flower. Preserves the full terpene and cannabinoid profile. Delivers the richest flavor and strongest entourage effect. Used in Mellow Fellow and Uplift CDT products.
• Distillate — Highly refined extraction that isolates specific cannabinoids at 85-99% purity. Clean and potent, but strips most terpenes and minor cannabinoids. Terpenes are often added back in.
• CDT (Cannabis-Derived Terpenes) — Terpenes extracted from real cannabis plants, then blended with cannabinoid distillate. Authentic strain-specific flavors.
• BDT (Botanical-Derived Terpenes) — Terpenes from non-cannabis plants (lavender, citrus, pine). Cheaper but less authentic. Found in the Uplift BDT Knockout Disposable.

Live resin and CDT products generally cost more, but the flavor and effect quality is noticeably better. If you're choosing between formats, live resin delivers the most complete experience.

Legal Status: The 2018 Farm Bill and Beyond

All hemp-derived cannabinoids sold at Vape City USA contain less than 0.3% Delta-9 THC, which makes them federally legal under the 2018 Farm Bill. But that framework is changing, and state laws add another layer of complexity.

The November 2026 Federal Shift

In November 2025, President Trump signed the Continuing Appropriations Act, which rewrites the federal definition of hemp. Starting November 12, 2026, the law shifts from Delta-9-only testing to a "total tetrahydrocannabinols" standard measured after decarboxylation. THCA, Delta-8, Delta-10, THCP, HHC, and all THC isomers will count toward the 0.3% threshold. Finished products face a cap of 0.4mg total THC per container. The U.S. Hemp Roundtable estimates roughly 95% of existing hemp cannabinoid products won't qualify as legal hemp under the new rules.

Several bills are working to delay or reverse this change (the American Hemp Protection Act, the Hemp Planting Predictability Act), and a Trump executive order in December 2025 directed agencies to reassess THC limits. The situation is fluid, but the current enforcement date stands at November 2026.

State-Level Restrictions (Current)

• Delta-8: Banned or restricted in 17-20 states including New York, Colorado, California, and Michigan.
• THCA: Banned in roughly 12 states. Texas banned retail THCA flower sales effective March 2026. States using total-THC testing (Tennessee, Iowa, Hawaii, Idaho) have effectively closed the loophole already.
• THCP: Banned in Colorado, Utah, Iowa, New York, and roughly 10 other states.
• HHC: Banned in Colorado, Idaho, New York, Utah, Washington, and others.
• CBD, CBN, CBG: Legal in all 50 states when derived from hemp.

Important: Hemp cannabinoid laws change frequently. Always check your state's current regulations before purchasing. We don't ship to states where specific cannabinoids are restricted.

For a detailed state-by-state breakdown, read Is Delta-8 Legal? State-by-State Guide (2026).

Drug Testing: What You Need to Know

This is the part nobody wants to hear: most hemp-derived cannabinoids will trigger a positive drug test. Standard urine tests detect THC metabolites (THC-COOH), and your body processes Delta-8, THCA, THCP, HHC, and other THC analogs into the same or similar metabolites.

• Delta-8, Delta-10, THCA, THCP, HHC: All likely to cause a positive result on standard immunoassay drug tests.
• CBD, CBN, CBG: Shouldn't trigger a positive on their own, but full-spectrum products may contain trace THC that accumulates with heavy use.
• Detection window: 3-30 days depending on frequency of use, body fat, metabolism, and test sensitivity.

If you have an upcoming drug test, don't use any psychoactive cannabinoid products. Period. There's no reliable way to distinguish between "legal" hemp cannabinoids and "illegal" Delta-9 on a standard test.

Full details: Delta-8 THC Drug Test Guide: How Long It Stays in Your System.

Choosing the Right Cannabinoid for You

Here's a quick decision framework based on what you're looking for:

• First time trying hemp cannabinoids? Start with Delta-8 or a balanced HHC blend. The Mellow Fellow 2ml Cartridge in Tranquility or Creativity blend is a good entry point.
• Want something close to traditional THC? Go with THCA products. The conversion to Delta-9 when vaped means you're getting the real deal.
• Maximum potency? THCP is the strongest available. The Uplift Knockout CDT Disposable combines THCP with Delta-8, CBN, and HHC for a full-body experience.
• Balanced, mood-specific effects? Mellow Fellow's 10 mood-based blends combine multiple cannabinoids into formulas designed for specific outcomes: energy, creativity, sleep, relaxation, and more.
• No high at all? Stick with CBD, CBN, or CBG products.
• Biggest device? The Geek THCX GT6000 holds 6 grams of CB9A + THCP blend with dual mesh coils, a curved display, and two power modes.

Browse the full Hemp & THC collection at Vape City USA. All products are third-party lab tested, hemp-derived, and ship with Certificates of Analysis. Adults 21+ only.

These statements have not been evaluated by the FDA. These products are not intended to diagnose, treat, cure, or prevent any disease. Hemp-derived products contain less than 0.3% Delta-9 THC as required by the 2018 Farm Bill.