What this store offers
RUO peptide catalog with documentation-oriented product pages
Store Review Article
rPeptide review: a research-reagent maker for neurodegeneration labs, not a research-peptide shop
rPeptide, listed on this site as R Peptide, often turns up beside consumer research-peptide stores because of its name. It is a different kind of business: a Georgia company that produces recombinant amyloid, tau and synuclein peptides and proteins for Alzheimer's and Parkinson's laboratories, sells by purchase order as well as card, and publishes a mass spectrum for each catalogue product. This review records what its pages said on 9 October 2026 and what that means for anyone comparing it with the stores in this set.
Public materials checked 2026-10-09. Details published by third parties change; verify current information at the source before relying on it.
Quick answer
rPeptide was operating on 9 October 2026 from Watkinsville, Georgia. Its catalogue of about 370 entries is recombinant beta-amyloid, tau and alpha-synuclein peptides and proteins, preformed fibrils, antibodies and kits for neurodegeneration research, plus custom protein expression and isotope labelling. A reference product, recombinant Beta-Amyloid (1-42) treated with HFIP, cost $200 for 0.5 mg and $350 for 1.0 mg, stated as more than 97% pure by mass spectrometry, with a downloadable spectrum showing a peak at 4,515.8 against a theoretical mass of 4,514 Da. Orders are taken by phone, email, fax or online, by card or purchase order, and international customers are served through named distributors. It does not sell the compounds the consumer stores in this set sell.
Status on 9 October 2026
Operating; Watkinsville, Georgia; about 370 catalogue entries
What it sells
Recombinant amyloid, tau and synuclein reagents for neurodegeneration research
Documentation
Data sheet and mass spectrum downloadable for each product
Quick checklist before deeper review
- Check the catalogue number and the product's own data sheet; purity and method are stated per product.
- Compare the observed mass on the spectrum with the theoretical mass on the product page.
- Allow for dry-ice shipping charges on products stored at -70 to -80 °C.
- Outside the United States, order through the listed distributor for your country.
- Do not treat this company as a source for the compounds sold by consumer research-peptide stores; its catalogue is different.
Top-half signal table
| Checkpoint | Public signal in this pass | Why this matters |
|---|---|---|
| Operating status | Site serving catalogue and ordering pages; address, phone, fax and email shown | Confirms there is a current supplier to assess |
| What it sells | Recombinant beta-amyloid, tau and synuclein peptides and proteins, fibrils, antibodies, kits | A laboratory reagent catalogue, not a consumer peptide shop |
| Per-product documents | Data sheet and mass spectrum for each catalogue number | Identity evidence is published, not only claimed |
| Reference product | Beta-Amyloid (1-42), HFIP: $200 / 0.5 mg, >97% by mass spec, peak 4,515.8 vs 4,514 Da | Observed mass can be set against theoretical mass |
| Ordering | Card or purchase order; phone, email, fax or online; standing and bulk orders | Set up for institutional buyers |
| International | Named distributors by country; none in China | Non-US orders go through a local partner |
What kind of company this is
rPeptide describes itself as a peptide and protein company supplying reagents for Alzheimer's, Parkinson's and other neurodegenerative research. Its catalogue — about 370 entries returned by its store on 9 October 2026 — is organised around three disease proteins: beta-amyloid peptides, tau proteins and alpha-synuclein, offered as monomers, labelled variants (FITC, biotin, nitrogen-15 and carbon-13) and preformed fibrils for seeding experiments, alongside antibodies, kits, plasma proteins and a small set of coronavirus research tools. It also offers contract work: molecular biology, protein expression and purification, and uniform isotope labelling.
That makes it unlike every other store reviewed in this set. It does not list the compounds those stores sell, its product pages carry publication lists rather than marketing copy, and its ordering page assumes a laboratory buyer with a purchase order. Its pages state that products are for research purposes only and not for human consumption.
One product and its documents
We read the page for Beta-Amyloid (1-42), HFIP, catalogue number A-1163. It is expressed recombinantly in E. coli from the human sequence, treated with hexafluoroisopropanol and dried to a clear film so that it starts out largely monomeric for aggregation and seeding studies. It cost $200 for 0.5 mg and $350 for 1.0 mg, ships at ambient temperature and is stored at -20 °C. Purity is stated as greater than 97% by mass spectrometry, and the theoretical molecular mass as 4,514 Da.
Two documents can be downloaded from the page. The mass-spectrum sheet shows a single dominant peak labelled 4,515.8 on an m/z axis — close to the theoretical mass, which is the point of publishing it. The data sheet repeats the research-use statement. Neither document carries a lot number or a test date, so they describe the product rather than a specific batch; a lot-specific record would be something to request with an order. The product page also lists papers that used the reagent, including work published in Cell in 2023.
| Item | What the page or document says |
|---|---|
| Catalogue number | A-1163 |
| Source | Recombinant, human sequence expressed in E. coli |
| Form | Clear dry film after HFIP treatment |
| Price | $200 (0.5 mg), $350 (1.0 mg) |
| Purity | >97% by mass spectrometry |
| Mass | 4,514 Da theoretical; spectrum peak labelled 4,515.8 |
| Lot or test date on the documents | None shown |
How it sells and ships
Orders can be placed by telephone, email, fax or online. A purchase order needs billing and shipping addresses, card details (Visa, Mastercard or American Express) or a purchase-order number, and catalogue numbers; tax-exempt buyers must have a resale or exemption certificate on file. Standing orders that schedule repeat shipments on one purchase order earn discounts, and bulk orders can be quoted. Products that must be kept at -70 to -80 °C ship on dry ice, at extra cost.
Customers outside the United States are directed to named distributors country by country — for example Cosmo Bio and Nacalai Tesque in Japan and CliniSciences across several European countries — and the page states that the company has no distributor in China. Contact is by a Watkinsville, Georgia address, a local and a toll-free phone number, fax, a sales email address and a form, with office hours of 8 am to 5 pm Eastern on weekdays.
What changed on this page
The previous version of this review was generated from a template shared with every store review and treated this company as one more research-peptide storefront. This version records what its own pages and documents say on a stated date, including what kind of supplier it is. It carries no score and makes no recommendation.
Limits of this page
- We read the company's public pages and the two documents for one product on 9 October 2026. We did not order or receive any product, and we do not test products of any supplier.
- The catalogue count is the number of entries its store returned that day; it includes size and label variants and changes over time.
- We did not verify the distributors listed or the publications cited on the product page.
- Everything here is research-context information about a supplier. Nothing on this page is guidance about the use of any compound in humans or animals.
- Medibact is not affiliated with rPeptide or any distributor named here. Names are used only to identify the businesses described.
Related internal pages
FAQ
Is rPeptide a research-peptide store like the others reviewed here?
No. It makes recombinant beta-amyloid, tau and alpha-synuclein peptides and proteins, fibrils, antibodies and kits for neurodegeneration laboratories, and sells by card or purchase order. It does not list the compounds sold by the consumer research-peptide stores in this set.
Is rPeptide still operating?
Yes. On 9 October 2026 its site was serving its catalogue, data sheets and ordering pages, with an address in Watkinsville, Georgia, phone and fax numbers and a sales email address.
Does rPeptide publish quality data?
Each product page offers a data sheet and a mass spectrum. For Beta-Amyloid (1-42), HFIP the stated purity is above 97% by mass spectrometry, and the spectrum shows a peak labelled 4,515.8 against a theoretical mass of 4,514 Da. The documents carry no lot number or test date.
Can rPeptide ship outside the United States?
International customers are served through distributors listed by country on its site; the page states it has no distributor in China.
How do you pay rPeptide?
By Visa, Mastercard or American Express, or with a purchase order. Orders can be placed by phone, email, fax or online, and standing and bulk orders can earn discounts.
Does Medibact have any connection to rPeptide?
No. Medibact has no affiliation, commercial relationship or arrangement with rPeptide or any supplier or distributor named on this site. We sell USP-grade bacteriostatic water made at an FDA-registered facility in the United States, and we do not sell peptides.
Educational use only — not medical advice. This guide summarizes information reported in published research and community practice for educational purposes. It is not medical advice and not a recommendation to use any compound. Any doses, schedules, or combinations shown are examples of what has been reported, not instructions for you. Many peptides described here are research compounds that are not FDA-approved for the uses discussed and may be investigational or restricted. Effects, risks, and legal status vary; individual needs and results vary. Consult a qualified, licensed healthcare professional before making any decision. Do not use this content to diagnose, treat, or dose yourself.
Medibact does not endorse third-party stores or labs. This review content is educational, based on public website materials, and requires independent verification. No ranking position is a safety guarantee. Affiliate or outclick links may be added later.