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Research-grade compound. Laboratory use only. Not intended for human or animal use, ingestion, or injection. No medical claims are made or implied.
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Research-grade Acetic Acid Water. ≥ 98% supplier batch specification; selected lots independently tested (99.3% avg across published reports). Lyophilized powder in sealed glass vial.
| Quantity | Price Each | Total | Savings |
|---|---|---|---|
| 1 unit | €5.99 | €5.99 | -- |
| 3+ | €5.69 | €17.07 | 5% off |
| 5+Most Popular | €5.39 | €26.96 | 10% off |
| 10+ | €5.09 | €50.92 | 15% off |
Important Notice
This product is intended for laboratory and research use only. Not for human or veterinary use. By purchasing, you confirm this product will be used exclusively for in-vitro research purposes.
Reconstitution Required
This peptide ships lyophilized (dry powder) and requires bacteriostatic water to reconstitute before use. BAC water is sold separately.
99.2% average HPLC purity, verified by independent third-party testing
Janoshik report published when available
24h dispatch, EU-wide shipping from €4.99
Supplier batch specification on every product; independent Janoshik report on selected lots
Acetic acid water (0.1% v/v, pH approximately 3.5-4.0) is an alternative reconstitution medium for research peptides that are poorly soluble in neutral aqueous solutions. At physiological pH, many cationic peptides -- particularly those rich in arginine and lysine -- form aggregates through intermolecular electrostatic and hydrophobic interactions. Lowering pH to around 3.5 protonates more amino groups, increases electrostatic repulsion between peptide chains, and disrupts aggregation, producing a clear, stable solution that can then be diluted into higher-pH buffers for experimental use.
Growth hormone peptides (GH 191AA, GH Fragment 176-191), IGF-1 variants, and some neuropeptides are the most common candidates. The protocol is typically: dissolve in 0.1% acetic acid first to produce a concentrated stock, then dilute 10-fold or more into PBS, saline, or media for the working solution. At a 1:10 dilution, the acetic acid concentration in the experimental solution drops to 0.01%, which is tolerable for most in vitro and in vivo applications without pH disruption.
Do not use acetic acid reconstitution for peptides with acid-sensitive bonds -- aspartyl-proline sequences and some modified peptides can undergo acid hydrolysis. Also avoid for experiments where a precisely controlled pH is critical to the readout. For standard peptide solubilization where your primary concern is getting the compound into solution, 0.1% acetic acid is a well-established approach that the peptide research community has used for decades.
| Parameter | Value |
|---|---|
| Volume | 10ml vial |
| Acetic acid concentration | 0.1% v/v |
| pH | approximately 3.5 - 4.0 |
| Sterility | Sterile filtered |
| Solvent | Water for injection grade |
Store at room temperature, away from heat sources and direct sunlight. Acetic acid water does not require refrigeration before opening. Once opened and added to a peptide vial, store reconstituted solution at 4°C and use within 7 days -- acetic acid water lacks the benzyl alcohol preservative of bacteriostatic water, so the stability window is shorter. For longer storage of acetic acid-solubilized peptides, lyophilize aliquots after initial reconstitution.
GH 191AA and GH Fragment 176-191 are the most commonly cited examples. IGF-1 LR3 can sometimes be dissolved in neutral buffer but acetic acid often produces better initial solubility. GHRP-2 and GHRP-6 typically dissolve readily in bacteriostatic water. When in doubt, try bacteriostatic water first -- if the solution remains cloudy after gentle agitation for 5 minutes, switch to 0.1% acetic acid. Some researchers routinely use acetic acid for all GH-axis peptides simply to avoid troubleshooting aggregation at inconvenient times.
For most synthetic peptides, mild acidity (pH 3.5-4.0) is actually stabilizing compared to neutral pH -- it reduces deamidation of asparagine and glutamine, which are hydrolysis-susceptible amino acids that preferentially degrade at neutral to basic pH. The concern is that strongly acidic conditions (below pH 2) can cleave Asp-Pro bonds in certain peptide sequences. At 0.1% acetic acid and pH approximately 3.5, this is not a concern for standard research peptides. The bigger stability risk at acidic pH is oxidation of methionine and tryptophan if oxygen is not excluded during storage.
Acetic acid water is supplied for laboratory research use only. For research purposes only.
Acetic acid water (0.1% v/v, pH approximately 3.5-4.0) is an alternative reconstitution medium for research peptides that are poorly soluble in neutral aqueous solutions. At physiological pH, many cationic peptides -- particularly those rich in arginine and lysine -- form aggregates through intermolecular electrostatic and hydrophobic interactions. Lowering pH to around 3.5 protonates more amino groups, increases electrostatic repulsion between peptide chains, and disrupts aggregation, producing a clear, stable solution that can then be diluted into higher-pH buffers for experimental use.
Growth hormone peptides (GH 191AA, GH Fragment 176-191), IGF-1 variants, and some neuropeptides are the most common candidates. The protocol is typically: dissolve in 0.1% acetic acid first to produce a concentrated stock, then dilute 10-fold or more into PBS, saline, or media for the working solution. At a 1:10 dilution, the acetic acid concentration in the experimental solution drops to 0.01%, which is tolerable for most in vitro and in vivo applications without pH disruption.
Do not use acetic acid reconstitution for peptides with acid-sensitive bonds -- aspartyl-proline sequences and some modified peptides can undergo acid hydrolysis. Also avoid for experiments where a precisely controlled pH is critical to the readout. For standard peptide solubilization where your primary concern is getting the compound into solution, 0.1% acetic acid is a well-established approach that the peptide research community has used for decades.
| Parameter | Value |
|---|---|
| Volume | 10ml vial |
| Acetic acid concentration | 0.1% v/v |
| pH | approximately 3.5 - 4.0 |
| Sterility | Sterile filtered |
| Solvent | Water for injection grade |
Store at room temperature, away from heat sources and direct sunlight. Acetic acid water does not require refrigeration before opening. Once opened and added to a peptide vial, store reconstituted solution at 4°C and use within 7 days -- acetic acid water lacks the benzyl alcohol preservative of bacteriostatic water, so the stability window is shorter. For longer storage of acetic acid-solubilized peptides, lyophilize aliquots after initial reconstitution.
GH 191AA and GH Fragment 176-191 are the most commonly cited examples. IGF-1 LR3 can sometimes be dissolved in neutral buffer but acetic acid often produces better initial solubility. GHRP-2 and GHRP-6 typically dissolve readily in bacteriostatic water. When in doubt, try bacteriostatic water first -- if the solution remains cloudy after gentle agitation for 5 minutes, switch to 0.1% acetic acid. Some researchers routinely use acetic acid for all GH-axis peptides simply to avoid troubleshooting aggregation at inconvenient times.
For most synthetic peptides, mild acidity (pH 3.5-4.0) is actually stabilizing compared to neutral pH -- it reduces deamidation of asparagine and glutamine, which are hydrolysis-susceptible amino acids that preferentially degrade at neutral to basic pH. The concern is that strongly acidic conditions (below pH 2) can cleave Asp-Pro bonds in certain peptide sequences. At 0.1% acetic acid and pH approximately 3.5, this is not a concern for standard research peptides. The bigger stability risk at acidic pH is oxidation of methionine and tryptophan if oxygen is not excluded during storage.
Acetic acid water is supplied for laboratory research use only. For research purposes only.
Researcher Confidence
Who actually tests this?
Selected lots are independently verified by Janoshik Analytical (Czech Republic) and published on the Janoshik public portal. Other lots ship with the supplier's batch specification. See /coa for the published wall.
View COAs →What if I get the wrong batch?
Every bottle label carries a lot number that maps to a specific Certificate of Analysis. If a batch fails spec, we don't ship it — full stop.
View COAs →Where does it ship from?
Romania (EU). We are CERTALAB SRL, CUI 54169956, VAT-registered. Sameday for Romania, GLS for most EU destinations, TCE Worldwide for the remaining cross-border EU and non-EU markets (UK, Switzerland, Norway, Iceland, Israel, Serbia). Delivery 1–15 business days depending on destination — exact window shown at checkout.
Shipping details →What if there's a problem?
You have a 14-day withdrawal right under OUG 34/2014 (Romanian/EU consumer law), with ANPC/ODR escalation available. Contact us at support@certapeptides.com.
Returns policy →This product is intended for scientific research and development purposes only. It is a chemical substance that shall not be used as a drug, medicine, active substance, or ingredient in any product intended for human or animal consumption. Researchers must handle this compound in accordance with their institutional biosafety guidelines. Use only in properly equipped laboratory settings with appropriate personal protective equipment.