CW
Retatrutide purity was outstanding
Running metabolic assays with Retatrutide. Lot had >99% purity by reverse-phase HPLC — above spec. Mass spec confirmed molecular weight. Best peptide supplier we've worked with.
HPLC Verified
>98% Purity
COA Included
APEX Performance & Metabolic
ACE-031
$181.65
ACE-031 is a fusion protein of the activin receptor type IIB (ActRIIB) extracellular domain and human IgG1-Fc. It acts as a myostatin trap by sequestering myostatin, GDF-11, and activins. Studied in Duchenne muscular dystrophy and muscle wasting research.
| Format | Lyophilized Vial |
|---|---|
| Dosage | 1mg |
| Purity | >98% |
| Sub-Line | APEX |
In Stock — Overnight and 2–3 day delivery available
Product Information
ACE-031 | ActRIIB-Fc Myostatin Inhibitor — Research Grade
ACE-031 is a recombinant fusion protein comprising the ligand-binding domain of activin receptor type IIB (ActRIIB) fused to human IgG1-Fc. It acts as a decoy receptor, capturing myostatin, GDF-11, GDF-8, and activins before they can bind endogenous ActRIIB on muscle fibres.
Mechanism of Action
- Myostatin sequestration — binds and neutralises myostatin (GDF-8), a potent inhibitor of skeletal muscle growth
- GDF-11 inhibition — also captures GDF-11 and activins A/B, broadening its anti-catabolic scope
- ActRIIB decoy — prevents endogenous ActRIIB signalling (Smad 2/3 pathway) which promotes muscle protein catabolism
- Muscle fibre hypertrophy — Phase I/II data in healthy postmenopausal women showed 3-5% lean mass increase after single dose
Research Areas
ACE-031 is studied in Duchenne muscular dystrophy (Phase II), sarcopenia, cancer cachexia, and muscle wasting disease. It remains a key research tool in myostatin biology.
For Research Use Only. Rainbow Peptide supplies ACE-031 exclusively for in vitro and laboratory research purposes. Not for human or veterinary use.
Frequently Asked Questions
- What is ACE-031?
- ACE-031 is a fusion protein of the activin receptor type IIB (ActRIIB) extracellular domain and human IgG1-Fc. It acts as a myostatin trap by sequestering myostatin, GDF-11, and activins. Studied in Duchenne muscular dystrophy and muscle wasting research.
- Is ACE-031 for sale at Rainbow Peptide?
- Yes. ACE-031 is available for purchase with Certificate of Analysis confirming >98% HPLC purity. Every order Overnight and 2–3 day delivery available. For Research Use Only.
- What purity is your ACE-031?
- Rainbow Peptide's ACE-031 is >98% pure, HPLC verified by an accredited third-party laboratory. A COA is included with every order.
- Is ACE-031 safe for human use?
- No. ACE-031 is strictly For Research Use Only (RUO). It is not intended for human consumption and is not intended to diagnose, treat, cure, or prevent any disease.
- How quickly does ACE-031 ship?
- Overnight and 2–3 day delivery available. Ships in temperature-controlled packaging.
Third-Party Verified
Every Order Ships with a Certificate of Analysis
We don't just claim purity — we prove it. Every batch of ACE-031 is independently tested by an accredited third-party laboratory before it reaches you. Your COA is linked to your specific lot number.
- HPLC purity analysis — minimum threshold >98%
- Mass spectrometry — molecular weight confirmation
- Lot number traceable to your order
- Endotoxin limits verified — safe for cell-based assays
RAINBOW PEPTIDE LABS CERTIFICATE OF ANALYSIS
Product ACE-031
Lot # RP-00047-A
HPLC Purity >98.0% >98.5% PASS
Mass Spec (MW) Confirmed Confirmed PASS
Endotoxin <1 EU/mg <0.5 EU/mg PASS
Visual Inspection White powder White powder PASS
What Researchers Say
Verified purchases from active research labs and scientists
5.00
★★★★★
2 verified reviews DP
Ipamorelin quality confirmed via QC
Internal verification confirmed COA data. Purity was 98.6% HPLC. Peptide behavior in our assay was consistent with published data. Will order again for next study phase.
BS
Consistent performance for research
AOD-9604 arrived quickly and in excellent condition. Cold pack preserved temperature. COA was thorough. Results in metabolic assays consistent with expected parameters.
