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Metabolic
HGH Fragment 176-191
- Purity
- >= 99% (HPLC)
- Form
- Lyophilised powder
- Origin
- United States
Manufactured for laboratory research. Not for human or veterinary use. Read full disclaimer →
HGH Fragment 176-191 is a synthetic fragment of the C-terminal region of human growth hormone studied in research for its lipolytic and metabolic-pathway activity in experimental models.
- Purity >= 99% (HPLC)
- Supplied as a lyophilised powder
- Independent batch identity and purity testing
- For laboratory research use only; not for human or veterinary use
What is HGH Fragment 176-191?
HGH Fragment 176-191 is a synthetic peptide corresponding to the C-terminal 176-191 region of human growth hormone (somatropin). It carries the molecular formula C78H123N23O22S2, a molecular weight of 1799.1 g/mol, and CAS number 66004-57-7. Kovalabs supplies it as a lyophilised reference compound for in-vitro and laboratory research only.
It is a fragment of the parent hormone rather than the full-length molecule. The closely related compound AOD-9604 is a modified version of this same C-terminal region, which is why the two are frequently compared as research materials. See AOD-9604 for that sibling reference standard.
Is HGH Fragment 176-191 legal in the UK?
HGH Fragment 176-191 is not a controlled drug under the Misuse of Drugs Act 1971, and it can be supplied within the UK as a research chemical. It is sold strictly for laboratory research and is not for human or veterinary consumption. It is not a licensed medicine and holds no marketing authorisation. The purchaser is responsible for compliance with all applicable regulations. See our research disclaimer for full terms.
How is identity and quality assured?
Every batch is released only after independent identity and purity testing. Purity is assessed at 99% or higher by HPLC, and identity is confirmed against the expected mass for CAS 66004-57-7 (PubChem CID 16131230, InChIKey LSTCHEVTSMJOCE-YWWHUHEESA-N). Not all material labelled as this fragment is equivalent: purity, correct sequence and verified identifiers are what distinguish a usable reference standard. Batch certificates of analysis are available at our CoA library.
What does the research on HGH Fragment 176-191 investigate?
The published literature examines this C-terminal fragment in the context of metabolic-pathway signalling in pre-clinical and in-vitro models. None of that work establishes a benefit, effect or outcome in humans, and the material is not a licensed medicine. Mechanistic detail and the underlying study designs are covered in the HGH Fragment 176-191 research monograph.
Synthesis and supply
HGH Fragment 176-191 is manufactured to research grade and supplied as a white to off-white lyophilised powder. It is typically reconstituted with bacteriostatic water for laboratory handling. Store the lyophilised solid at -20C, dry and protected from light, and hold reconstituted material at 2-8C. Browse the full metabolic research peptides category, or compare related reference standards such as MOTS-c and Cagrilintide.
External resources for researchers
- 2D structure
- Product name
- HGH Fragment 176-191
- Synonyms
- Somatropin (176-191), HGH frag 176-191
- Molecular formula
- C78H123N23O22S2
- Molecular weight
- 1799.1 g/mol
- InChIKey
- LSTCHEVTSMJOCE-YWWHUHEESA-N
- CAS number
- 66004-57-7
- PubChem CID
- 16131230
- Purity
- >= 99% (HPLC)
- Form
- Lyophilised powder
- Appearance
- White to off-white solid
- Solubility
- Bacteriostatic water
- Storage
- Lyophilised: store at -20C, dry and light-protected. Reconstituted: 2-8C.
- What is HGH Fragment 176-191?
- HGH Fragment 176-191 is a synthetic peptide corresponding to the C-terminal 176-191 region of human growth hormone (somatropin). It has the molecular formula C78H123N23O22S2, a molecular weight of 1799.1 g/mol and CAS number 66004-57-7. Kovalabs supplies it as a lyophilised reference compound strictly for in-vitro and laboratory research use only.
- Is HGH Fragment 176-191 a peptide?
- Yes. It is a peptide fragment comprising the C-terminal 176-191 portion of the human growth hormone amino-acid sequence, rather than the full-length hormone. It is supplied as a synthetic, lyophilised research-grade material for laboratory use, not as a medicine or supplement.
- Is HGH Fragment 176-191 legal in the UK?
- HGH Fragment 176-191 is not a controlled drug under the Misuse of Drugs Act 1971 and may be supplied within the UK as a research chemical. It is sold for laboratory research only and is not for human or veterinary consumption. It is not a licensed medicine and has no marketing authorisation. The purchaser is responsible for compliance with applicable regulations.
- Is HGH Fragment 176-191 for human use?
- No. HGH Fragment 176-191 is supplied solely as a reference compound for non-clinical laboratory research. It is not for human or veterinary use, is not a licensed medicine, and must not be consumed or administered to any person or animal. No human or veterinary application is intended or implied.
- Has HGH Fragment 176-191 been shown to be safe or effective in humans?
- No. The available literature concerns pre-clinical and in-vitro model systems. None of it establishes a benefit, effect, safety profile or outcome in humans. The material is not a licensed medicine and is supplied only as a reference standard for non-clinical investigation. See the linked research monograph for study-design context.
- Is HGH Fragment 176-191 sold for weight or fat-related use?
- No. HGH Fragment 176-191 is supplied for laboratory research use only and is not supplied for, nor to be used for, any human application. We make no claims about any physiological outcome. It must not be consumed or administered to people or animals under any circumstances.
- What is the difference between HGH Fragment 176-191 and AOD-9604?
- AOD-9604 is a modified version of the same C-terminal 176-191 region of human growth hormone, structurally distinct from the unmodified fragment. Both are supplied as separate research reference compounds with their own identifiers and certificates of analysis. Neither is a licensed medicine; both are for laboratory research use only.
- What are the molecular identifiers for HGH Fragment 176-191?
- HGH Fragment 176-191 has CAS number 66004-57-7, molecular formula C78H123N23O22S2 and a molecular weight of 1799.1 g/mol. It corresponds to PubChem CID 16131230 with InChIKey LSTCHEVTSMJOCE-YWWHUHEESA-N. These identifiers are confirmed on each batch certificate of analysis.
- Is all HGH Fragment 176-191 the same?
- No. Material can vary in purity, sequence accuracy and correct identity. Kovalabs releases each batch only after independent testing showing 99% or higher purity by HPLC, with identity confirmed against the expected mass for CAS 66004-57-7. Verified identifiers and a batch certificate of analysis are what distinguish a reliable reference standard.
- How is HGH Fragment 176-191 supplied and reconstituted?
- It is supplied as a white to off-white lyophilised powder. For laboratory handling it is typically reconstituted with bacteriostatic water. Vial strength is a product specification rather than a usage instruction. All handling should follow appropriate laboratory practice; the material is for research use only and not for administration.
- How should HGH Fragment 176-191 be stored?
- Store the lyophilised powder at -20C, kept dry and protected from light. Once reconstituted, hold the solution at 2-8C. Proper storage preserves the integrity of the reference compound for laboratory research. The material is for research use only and not for human or veterinary use.
- Where can I buy HGH Fragment 176-191 in the UK?
- HGH Fragment 176-191 is available to buy from Kovalabs with UK despatch. It is supplied as a 99% HPLC, CoA-verified lyophilised research reference compound for laboratory use only. Browse it within our metabolic research peptides category alongside related reference standards. It is not for human or veterinary consumption.
- Does HGH Fragment 176-191 come with a certificate of analysis?
- Yes. Each batch is released only after independent identity and purity testing, and a certificate of analysis documenting 99% or higher HPLC purity and confirmed identity is available in our CoA library. The certificate verifies the compound against its molecular identifiers, including CAS 66004-57-7.
- Is HGH Fragment 176-191 a licensed medicine?
- No. HGH Fragment 176-191 is not a licensed medicine and holds no marketing authorisation in the UK or elsewhere. It is a research chemical supplied solely as a reference compound for non-clinical laboratory investigation. It must not be used for any human or veterinary purpose.
No third-party batch reports have been uploaded for this product yet. Reports are issued by independent labs after each manufacturing batch.
Calculator
Research planning only
Concentration2.50 mg/ml
Volume to draw0.100 ml
Insulin syringe (100 IU/ml)
10.0units
For research planning only. Not medical, dosing, or therapeutic advice. All Kovalabs products are research-use-only.
Store unreconstituted vials at −20°C for long-term, or refrigerated at 2-8°C for short-term use. Avoid repeated freeze-thaw cycles.
Reconstitute with bacteriostatic water down the inside wall of the vial; gently swirl to dissolve. Do not shake.
Once reconstituted, refrigerate at 2-8°C and use within 2-4 weeks. Discard if cloudy, discoloured, or particulate.