- ≥99% by HPLC per vial
- Lot-matched certificate of analysis
- Ships next business day, tracked
Neuro Stack (Semax · Selank · Dihexa vials)
Three-vial neuropeptide kit: Semax, Selank and Dihexa as separate sealed vials
- FormLyophilized powder in each vial, individually capped
- Research areasNeurotrophic signalling, BDNF expression, HGF/c-Met pathway studies
Overview
Semax is a synthetic heptapeptide built on the ACTH(4-7) fragment with a C-terminal Pro-Gly-Pro extension that improves stability. Selank shares that Pro-Gly-Pro design strategy but is built on tuftsin, a tetrapeptide derived from the immunoglobulin G heavy chain. Both were developed at the Russian Academy of Sciences and appear in a largely Russian-language research literature. Dihexa is structurally unrelated: it is a small angiotensin IV-derived molecule, N-hexanoic-Tyr-Ile-(6)aminohexanoic amide, investigated in connection with hepatocyte growth factor and its receptor c-Met.
Each vial carries its own lot number, its own HPLC assay at ≥99% purity and its own certificate of analysis. Supplying them unmixed allows independent concentration ranges, single-compound control arms and staged exposure across a study. The kit is offered strictly as research material for laboratory investigation.
Specifications
Supply & purity
- Form
- Lyophilized powder in each vial, individually capped
- Purity
- ≥99% by HPLC per vial; separate lot-matched COA for each
Handling & storage
- Storage (lyophilized)
- −20 °C, protected from light and moisture
- Storage (reconstituted)
- 2–8 °C, protected from light
Additional detail
- Product type
- Multi-vial research kit — three separately sealed vials
- Kit contents
- One Semax vial, one Selank vial, one Dihexa vial
- Semax
- CAS 80714-61-0 · C37H51N9O10S · 813.93 g/mol
- Semax sequence
- Met-Glu-His-Phe-Pro-Gly-Pro (ACTH 4-7 analogue)
- Selank
- CAS 129954-34-3 · C33H57N11O9 · 751.89 g/mol
- Selank sequence
- Thr-Lys-Pro-Arg-Pro-Gly-Pro (tuftsin analogue)
- Dihexa
- CAS 1401708-83-5 · C24H37N3O4 · 439.55 g/mol
- Research areas
- Neurotrophic signalling, BDNF expression, HGF/c-Met pathway studies
- Reconstitution
- Each vial prepared separately at protocol-defined concentration
Working out the concentration
Because Neuro Stack (Semax · Selank · Dihexa vials) arrives dry, its concentration is a decision rather than a specification. Run the numbers through the reconstitution calculator — vial mass in, diluent volume in, mg/mL and mass per syringe unit out.
Certificate of analysis
Every lot of Neuro Stack (Semax · Selank · Dihexa vials) is released against a certificate of analysis: the batch-specific laboratory data for that lot, not a generic document for the compound. The lot number on the certificate matches the lot number printed on the label you receive — the vial label itself, where the product is vialled — so the record and the material it describes can always be reconciled.
Purity: ≥99% by HPLC per vial — the specification for this listing. The figure for the lot you receive is the one reported on that lot’s certificate.
No lot certificate is on display on this page at the moment. That is a publishing state and not a testing one: lots are released and documented as described above whether or not the document is posted here, and we will send what exists for the lot in stock, or for a lot already on your bench, by its number.
Certificates are available on request before you order as well as after, with no account and no charge. Request the certificate for this listing, read the testing and documentation policy in full, or see how to read a peptide COA.
Questions about Neuro Stack (Semax · Selank · Dihexa vials)
Why are Semax and Selank grouped with Dihexa?
By research context rather than chemistry. Semax and Selank are related Pro-Gly-Pro stabilised neuropeptides; Dihexa is an angiotensin IV-derived molecule studied around the HGF/c-Met pathway. The kit spans three separate mechanisms rather than three variations on one.
Does each vial have its own certificate of analysis?
Yes. Every vial is a distinct manufacturing lot and is released with its own COA reporting HPLC identity and purity for that compound. Three separate documents accompany the kit, and current lot COAs can be requested before you order.
Is Dihexa as soluble as the other two?
No. Semax and Selank dissolve readily in bacteriostatic water, while Dihexa is substantially more lipophilic and can take longer to go into solution or require a co-solvent suited to your assay system. Plan solubility testing before preparing a full vial.
Can I use one vial and store the others?
Yes. Unopened lyophilized vials stored sealed at −20 °C away from light and moisture stay stable well beyond a year, so the kit can be worked through one component at a time as a protocol progresses rather than all at once.
Why not supply these as a blend?
Because their useful concentration ranges differ substantially, particularly for Dihexa. A fixed-ratio blend would force one component into an inappropriate range whenever another was correct, which makes separate vials the sound format for this group.
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