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Pick up the phone.

No phone tree and no ticket number. The people who answer are the same people who release the lots. Ask about a sequence, a COA, a shipment, or whether we are a fit at all.

Call or text us +1 (201) 478-1333

Monday–Friday, 9:00AM–5:00PM Eastern. Leave a voicemail any hour and we return it the next business day.

A real person, every time No account needed to ask
Email support support@pepriseusa.com

General questions and orders. We reply within one business day.

Talk to the lab research@pepriseusa.com

Analytical questions, lot numbers, and method details.

Good things to ask
  • Which lot is currently shipping, and can we see its COA first?
  • Can you walk us through your HPLC and mass-spec methods?
  • Do you support recurring or bulk orders for a lab?
  • Is a compound we don't see listed something you can source?
Browse the research library →

Why don’t you show prices?

Because we don’t show them until you’ve told us you’re a researcher. That is the whole point of the account.

You confirm you are 21 or older, and that nothing you buy will be used in or on humans or animals. It takes about a minute, it costs nothing, and your confirmation stays current for 12 months.

Everything else stays open. Every compound, every purity figure and every lot number is readable without an account — we hold back the numbers you would order from, not the evidence you would check us on.

Create an account to order

Certificate of analysis

Check the lot number here against the one printed on your vial. They have to match. Open in a new tab ↗ Download