Cannabidiol Crystals in the Store: A Four-Stage Laboratory Handling Protocol

Description

Cannabidiol reaches the laboratory as a crystalline phytocannabinoid with registry number 13956-29-1, summary formula C21H30O2 and a formula weight of 314.5. The sequence below is the order in which a receiving laboratory should touch the container, from the courier handover to the moment the material leaves the store for an experiment.

Stage one: accepting the delivery

1. Check the outer packaging for damage and for any sign that the cold chain or the seal was disturbed.
2. Compare the registry number on the inner label with the number on the delivery note and on the certificate.
3. Confirm that the certificate refers to the same batch number that is printed on the container, not to a neighbouring lot.
4. Enter the material in the substance ledger before the container is opened for the first time.

The second step deserves attention, because the racemic form of this molecule carries a different registry number, 3556-78-3, and the two are easy to confuse in an ordering system. A mismatch found at this stage costs a phone call; the same mismatch found after a week of work costs the week. See also our reagent-grade material: L-Tyrosine / L-Tyrosyna /Tyrozyna Czystość ≥ 99% 1.

Stage two: identity and purity control

1. Record an infrared or Raman spectrum and compare it with the retained reference trace for the same compound.
2. Run reversed-phase liquid chromatography with the diode array set to cover the resorcinol chromophore.
3. Check the cannabinoid profile of the batch against the certificate, including the determined tetrahydrocannabinol content.
4. Report residual solvents from headspace gas chromatography and water content from Karl Fischer titration as separate numbers.

The cannabinoid content of a batch is read from the certificate for that batch. It is never assumed from the plant source, from the supplier reputation or from a previous delivery, because extraction and purification conditions differ from run to run. See also our catalogue listing: Fenyloalanina / L-Phenylalanine ≥ 99% 1000mg.

Stage three: storage between experiments

1. Keep the sealed container cold, dry and in the dark, since this class of molecule is sensitive to light and to atmospheric oxygen.
2. Blanket the headspace with inert gas after each withdrawal if the container will be opened repeatedly.
3. Allow the container to equilibrate to room temperature before breaking the seal, so that moisture does not condense on cold crystals.
4. Split the material into single-experiment portions rather than reopening the main container many times.

Stage four: issue and disposal

1. Weigh out only the mass required, on a calibrated balance behind a draught shield.
2. Record the date, the mass taken, the operator and the remaining stock in the ledger.
3. Label every prepared solution with substance, solvent, concentration and preparation date.
4. Route residues, rinsings and expired solutions to organic chemical waste, and archive the batch file after the container is emptied.

Run in this order, the protocol keeps identity, quality and stock records aligned at every point, which is exactly what an auditor asks to see later.

Related reagents

• Fenyloalanina / L-Phenylalanine ≥ 99% 1000mg
• L-Tyrosine / L-Tyrosyna /Tyrozyna Czystość ≥ 99% 1000mg
• Modafinil (CAS 68693-11-8) — certyfikat analizy odczynnika: zakres dan
• Oxiracetam / Oksiracetam, czystość ≥ 99%, 1000mg

Selected literature

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

Intended use. Human use is outside the scope of this product. Beyond human use, animal use is also excluded. A high-purity laboratory product used in HPLC and GC-MS studies. It is neither a medicinal product nor a foodstuff.