P21

Description

P21 is a lyophilized research peptide supplied for laboratory use, and it sits in the cognitive and neuro section of our catalogue alongside the other compounds researchers in Canada order for neuroscience-focused in-vitro work. Each vial contains 10mg of powder for reconstitution in a solvent of the researcher’s choosing, and every batch arrives with independent analytical documentation so the material can be qualified before it goes anywhere near an experiment.

Overview

The product is shipped as a sealed vial of lyophilized powder rather than a pre-mixed solution. Freeze-drying is the standard format for peptide reagents because the dry state is far more stable in transit and storage than an aqueous one, and it leaves the concentration decision with the laboratory — you reconstitute at whatever molarity your protocol calls for. P21 is available as a single 10mg vial for method development or a small pilot run, or as a box of ten vials where a study needs consistent material across a longer series of experiments. Vials in a box are drawn from the same production run wherever possible, which matters when you are comparing results across weeks. Orders ship from within Canada, so material stays inside the domestic network and avoids customs holds at the border.

What it is known for

Buyers choose this listing for the paperwork behind it as much as the peptide itself. Purity is assessed by HPLC and identity confirmed by mass spectrometry, both performed by Janoshik, an independent analytical laboratory with no stake in the result, and the certificate of analysis you receive is matched to the batch in your hand rather than a generic sample document. For anyone who has to justify reagent provenance in a lab notebook, a grant report or a methods section, that traceability is the deciding factor.

Key features

• Lyophilized powder format — The dry form tolerates shipping and cold storage far better than a solution, and it lets you set your own reconstitution volume and working concentration instead of inheriting someone else’s.
• Third-party HPLC purity testing — Purity is measured by an outside lab, so the number on the certificate is not self-reported by the seller.
• Mass spectrometry identity confirmation — Confirms the material in the vial is the compound named on the label, which HPLC alone does not establish.
• Batch-matched certificate of analysis — The document corresponds to your specific lot, giving you a defensible record of what was used in an experiment rather than a representative sample sheet.
• 10mg vial — A workable quantity for in-vitro protocols without committing to bulk material that may sit past its useful storage window.
• Box of ten option — Keeps a longer study on consistent material, removing lot-to-lot variation as a confounding variable between runs.
• Sealed single-use vial presentation — Each vial is opened only when needed, so unused stock stays undisturbed and uncontaminated.
• Domestic Canadian shipping, tracked and discreetly packaged — No international customs delay for a temperature-sensitive reagent, and tracking lets you plan to receive it rather than leave it sitting at a loading dock.

Benefits

• You can verify what you received before you use it, instead of trusting a label.
• Documentation is ready if a supervisor, ethics office or journal reviewer asks where the reagent came from.
• Reconstituting yourself means the working concentration matches your protocol exactly.
• Buying by the box removes reagent variability from the list of things that could explain an inconsistent result.
• Shipping within Canada shortens transit and keeps a cold-sensitive product out of border limbo.

Specifications

Typical applications

• In-vitro laboratory research in neuroscience-focused programs
• Analytical method development and reference work
• Controlled bench experiments where reagent identity and purity must be documented
• Multi-run studies requiring consistent material across a series

Important information

• Store the sealed vial cold as supplied, and keep it dry until you are ready to use it.
• Reconstitute in a solvent appropriate to your protocol, using aseptic technique, and record the volume used so your working concentration is traceable.
• Handle reconstituted material according to your laboratory’s standard practice for peptide solutions; solutions are less stable than the lyophilized powder.
• Request or download the certificate of analysis for your lot and check that the batch number matches the vial before use.
• Research use only. This product is not a drug, supplement, food or cosmetic. It is not intended to diagnose, treat, cure or prevent any disease, and is not for human or veterinary use, ingestion or administration.

Common questions

What form does P21 arrive in?

A sealed vial containing 10mg of lyophilized powder. It is not pre-mixed, so you reconstitute it in the lab with a solvent suited to your protocol.

Who performs the testing?

Janoshik, an independent third-party analytical laboratory. Purity is assessed by HPLC and identity is confirmed by mass spectrometry.

Is the certificate of analysis specific to my vial?

Yes. The COA is matched to the production batch you receive, not a generic or historical sample.

Should I buy the single vial or the box of ten?

A single vial suits method development or a short pilot. The box of ten is the better choice for a longer study, since running on the same batch removes lot variation as a variable between experiments.

How should it be stored on arrival?

Keep the sealed lyophilized vial cold and dry. Once reconstituted, follow your laboratory’s standard handling and storage practice for peptide solutions.

Does it ship within Canada?

Yes. Orders are dispatched from Canada with nationwide tracking and discreet packaging, so the material stays in the domestic network.

In summary

A 10mg lyophilized vial of P21 with independent HPLC purity and MS identity data and a lot-matched certificate of analysis, available singly or by the box of ten and shipped tracked from within Canada. Strictly for in-vitro laboratory research.