Contact
Talk to the lab.
For catalog questions, bulk research orders, or institutional inquiries, send us a message and we'll respond within one business day.
Direct channels
Research inquiries
research@purpeptide.com
Bulk & institutional
bulk@purpeptide.com
Support hours
Mon–Fri · 09:00–18:00 EST
Laboratory
240 Catalyst Way, Suite 04
Cambridge, MA 02139
By submitting, you confirm that you are at least 21 years old and that any resulting purchase is for research use only.
Support
Frequently asked questions
Everything you need to know before ordering. Still have questions?
Get in touch.
Are these products approved for human use?
No. All products on this site are sold strictly for in-vitro laboratory and research use. They are not approved for human or veterinary consumption, diagnosis, or treatment of any condition.
What purity standard do you guarantee?
Every batch is independently verified to ≥98% purity by reverse-phase HPLC, with identity confirmed by mass spectrometry. Most lots test above 99%.
Every batch is independently verified to ≥98% purity by reverse-phase HPLC, with identity confirmed by mass spectrometry. Most lots test above 99%.
Do you provide a Certificate of Analysis?
Yes. A batch-specific Certificate of Analysis is included with every order and is also available in your account dashboard, tied to the lot number on the vial.
Yes. A batch-specific Certificate of Analysis is included with every order and is also available in your account dashboard, tied to the lot number on the vial.
How should peptides be stored?
Lyophilized peptides should be kept at -20°C and protected from light. After reconstitution, storage at 2–8°C and use within the timeframe recommended on the CoA is advised.
Lyophilized peptides should be kept at -20°C and protected from light. After reconstitution, storage at 2–8°C and use within the timeframe recommended on the CoA is advised.
How quickly do orders ship?
Orders placed before 14:00 EST ship the same business day in insulated, cold-chain packaging. International orders ship within 48 hours.
Orders placed before 14:00 EST ship the same business day in insulated, cold-chain packaging. International orders ship within 48 hours.
Do you ship internationally?
Yes — to most jurisdictions where importing research chemicals is legal. The buyer is responsible for ensuring compliance with local laws
Yes — to most jurisdictions where importing research chemicals is legal. The buyer is responsible for ensuring compliance with local laws
What is your return policy?
Due to the sterile and temperature-sensitive nature of these products, all sales are final. We will replace any vial that arrives damaged or fails to match its CoA.
Due to the sterile and temperature-sensitive nature of these products, all sales are final. We will replace any vial that arrives damaged or fails to match its CoA.