Cannabidiol 1000 mg crystal unit — identity, purity documents and bench handling

Description

The unit described here is a crystalline solid of cannabidiol packaged in a 1000 mg quantity and intended for bench work: identity confirmation, calibration of chromatographic methods and preparation of stock solutions. The questions below cover what the accompanying paperwork has to state and how the crystals behave once the container is opened. See also our catalogue listing: L-Tyrosin / L-Tyrosin /Tyrosin Reinheit ≥ 99% 1000.

Which identifiers describe this material unambiguously?

The registry entry for cannabidiol is CAS 13956-29-1, the elemental composition C21H30O2 and the formula weight 314.5. Taken together those three entries separate it from isomeric cannabinoids built from exactly the same atoms. A certificate that omits any of them should be queried before the seal is broken.

What distinguishes a reagent batch from a technical grade?

Technical material is traded on appearance and a gross assay figure, while a reagent crystal is released against a chromatographic determination performed by a named method. The certificate of analysis, not the printed label, is the document that defines what is in the jar. Purity numbers quoted anywhere else stay unverified until that certificate repeats them.

Which structural features define the compound class?

Cannabidiol belongs to the resorcinolic phytocannabinoids: an aromatic ring carrying two hydroxyl groups in a meta arrangement and a pentyl side chain, linked to a monoterpene ring. In contrast to the pyran-type cannabinoids the two ring systems are not fused through an oxygen bridge, so both phenolic hydroxyls stay free. Those hydroxyls together with the terpene double bond are the reactive handles that decide how the crystal ages on the shelf. See also our catalogue listing: Methylene Blue / BŁĘKIT METYLENOWY. Czystość ≥ 99..

Why does acidity matter during sample preparation?

The open scaffold is known to cyclise towards pyran-type structures under strongly acidic conditions, which quietly converts an identity check into a mixture analysis. Acidic mobile phases, buffer residues and poorly rinsed glassware are therefore worth eliminating first. Neutral solvents and freshly cleaned glass remove most of that risk at no cost.

How should the crystals be stored and weighed?

Phenolic solids darken on contact with light and air, so amber glass, a tight closure and minimal headspace form the baseline. The temperature written on the batch card overrides any general guidance. Weighing is done on a balance protected from draughts, because low-density crystals scatter easily and static charge on plastic weighing boats distorts small masses.

• Identity: CAS 13956-29-1, composition C21H30O2, formula weight 314.5.
• Class: resorcinolic phytocannabinoid with an unfused terpene ring system.
• Reactive sites: two free phenolic hydroxyls and one terpene double bond.
• Keep away from: strong acid, direct light, open containers, repeated thermal cycling.
• Governing document: the certificate of analysis issued for the specific lot.

Other catalogue items

• Methylene Blue / BŁĘKIT METYLENOWY. Czystość ≥ 99.99% 1000mg.
• L-Tyrosin / L-Tyrosin /Tyrosin Reinheit ≥ 99% 1000mg
• ALCAR / Acetyl-L-Carnitine – Pureté ≥ 99% poids net 1000mg.
• Noopept / НООПЕПТ. Syntetyczna substancja ≥ 99% 1000MG.

References

Animal and in vitro studies indexed in PubMed; no human-use guidance is provided here.

• Briânis RC Cannabidiol and addiction 2024, International review of neurobiology. PMID 39029990
• Whitaker LHR Endometriosis: cannabidiol therapy for symptom relief 2024, Trends in pharmacological sciences. PMID 39547915
• Devinsky O Effect of Cannabidiol on Drop Seizures in the Lennox-Gastaut Syndrome 2018, The New England journal of medicine. PMID 29768152
• Moreira FA Cannabidiol and epilepsy 2024, International review of neurobiology. PMID 39029983