Velour Research

COAs & lab results

COAs and
lab results.

Every product page links to the current COA when available. Search by compound or batch number any time.

COAs
27 released
Purity spec
≥99% RP-HPLC
Identity
ESI-MS confirmed

27 of 27 COAs

COA library

Testing details on file
  • COA

    TB-500

    Thymosin β4 fragment

    COA-VRL-TB5-2603

    Released 2026-04-05

    Status · Sealed

    Release code
    VRL-TB5-2603
    Catalog reference
    VRL-TB5-2603
    Category
    Recovery research
    CAS number
    77591-33-4
    Molecular formula
    C₃₅H₅₉N₉O₁₁
    Molecular weight
    789.91 g/mol
    Sequence
    Ac-LKKTETQ-OH
    Residues
    7
    Appearance
    White lyophilized powder
    Storage
    Store lyophilized at −20 °C

    Analytical results

    Appearance

    Pass

    White lyophilized powder

    Visual

    Identity

    Pass

    Consistent with 789.91 g/mol

    ESI-MS

    Purity

    Pass

    ≥99% HPLC

    RP-HPLC · 214 nm

    Largest individual impurity

    Pass

    0.58% area

    RP-HPLC

    Net peptide / content

    Pass

    Conforms to label claim

    Gravimetric

    HPLC trace · VRL-TB5-2603Retention 10.60 min · 214 nm · C18
    t / min →signed 2026-04-05

    Reviewed & released by

    Velour Research

    Orange County · 2026-04-05

    COA-VRL-TB5-2603

    For laboratory research use only. This COA documents analytical testing of the referenced material. Products are sold for laboratory research use only and are not for human or animal consumption.

Wholesale support

Bulk COA support

Wholesale accounts can request the COAs tied to a bulk order.

Request a bundle
27 COAs indexedVelour Research · Orange County