For laboratory research use only — not for human consumption

Defined Compounds

Research Grade · Third-Party Tested

Precision peptides for serious research

Defined Compounds supplies 99%+ purity research vials — every batch backed by an independent certificate of analysis.

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For laboratory research use only · 21+

Research peptide vials with blue caps in a bright laboratory

≥99% Purity

Every batch verified by HPLC and mass spectrometry.

COAs Included

Third-party certificates of analysis for every lot.

Cold-Chain Shipping

Lyophilized vials shipped with temperature control.

Fast Fulfillment

Orders ship within 1–2 business days, tracked.

Catalog

Featured research vials

Defined Compounds Retatrutide research vial

Retatrutide

99% + purity

20 mg

$70.00

Defined Compounds Tirzepatide research vial

Tirzepatide

99% + purity

20 mg

$50.00

Defined Compounds NAD+ research vial

NAD+

99% + purity

100 mg500 mg1000 mg

$45.00

Defined Compounds HGH research vial

HGH

99% + purity

36 IU

$75.00

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Every vial. Every batch. Fully documented.

Download lot-specific certificates of analysis before you buy — purity, identity, and endotoxin data verified by an independent laboratory.

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Tiered discounts start at 10 vials per SKU, with dedicated support and consolidated cold-chain shipping for bulk orders.

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