Boldenone Undecylenate
Undecylenate ester. Sustained-release anabolic standard.
Also known as: EQ · EQUIPOISE · BU · U300 · U600 · Boldenone
CAS 13103-34-9 · C30H44O3
Lead time
Ships in 3–5 days
Purity
99.0%
CAS Number
13103-34-9
Molecular Weight
452.7
Formula
C30H44O3
Form
Oil solution 250mg/mL
Packaging
10mL vial
Storage
Room temperature, oil solution
Solubility
Oil-based carrier
Chemical structure
2D structure · Source: PubChem (NIH)
Research applications
Boldenone undecylenate is a long-ester (C11) analog of testosterone with an extended undecylenate chain, studied for sustained plasma-release characteristics and its comparatively lower androgenic potency. It is used in ester-release kinetics research, erythropoietin-pathway studies, and analytical reference testing. Supplied as a research-grade oil solution.
Quality Documentation
How we verifyRaw material screening
Off-spec lots never enter synthesis
In-process monitoring
Intermediates characterized at checkpoints
HPLC-MS verification
Identity, purity & quantitation per batch
A batch-specific COA ships with every order — see the format before you buy.
Request sample COAFrequently asked questions
What is Boldenone Undecylenate?
Boldenone undecylenate is a long-ester (C11) analog of testosterone with an extended undecylenate chain, studied for sustained plasma-release characteristics and its comparatively lower androgenic potency. It is used in ester-release kinetics research, erythropoietin-pathway studies, and analytical reference testing. Supplied as a research-grade oil solution.
What purity is Boldenone Undecylenate?
99.0% purity, HPLC-MS verified per batch.
What is the CAS number of Boldenone Undecylenate?
CAS 13103-34-9 · Molecular formula C30H44O3 · Molecular weight 452.7.
How long does Boldenone Undecylenate take to ship?
Ships in 3–5 days after order confirmation.
How should Boldenone Undecylenate be stored?
Room temperature, oil solution. Solubility: Oil-based carrier.
Is Boldenone Undecylenate for human use?
No. Boldenone Undecylenate is a research compound for laboratory research use only — not for human or veterinary use.
For pricing and availability of Boldenone Undecylenate, contact our research team.
For laboratory research use only.
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Related journal
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Oxandrolone's high anabolic-to-androgenic ratio, its ~9–12 hour half-life, and the 10 mg tablet math for research protocols.
Boldenone Undecylenate (Equipoise): The Long Ester, Examined
What boldenone undecylenate is, why the undecylenate ester gives ~14-day kinetics, its veterinary history, and how the 250 mg/mL oil vial fits analytical research.
Ester Half-Lives and Clearance: What Every Researcher Should Know
What an ester is, why half-life drives injection frequency, how first-order clearance works, and when a compound is effectively cleared.