What's on the label is the measured result — net peptide mass, not gross powder weight, plus RP-HPLC purity, on a lot-numbered COA for every batch.
Net peptide mass and RP-HPLC purity — a lot-numbered COA for every batch.
Net peptide mass + HPLC purity, per lot.
PCAC will review 7 peptides for the 503A bulks list, BPC-157, KPV, TB-500, MOTS-c, Emideltide, Semax, Epitalon. Read our briefing →
PCAC will review 7 peptides for the 503A bulks list. Read →
FDA PCAC reviews 7 peptides in July. Read →
Acidification solvent · process auxiliary
PeptideXpo buyer fit
This PeptideXpo page is intentionally positioned for distributors, OEM buyers, and procurement teams comparing Acetic Acid (Glacial / Concentrated Solvent) inside a wider peptide catalog. It is not trying to be the deepest single-molecule monograph; the differentiated intent is assortment planning, export-ready documentation, fill-size comparison, and whether this SKU belongs in a broader buyer program.
Overview
Concentrated / glacial acetic acid is supplied as a process-auxiliary solvent for peptide reconstitution workflows that require in-house preparation of acidic-pH diluents at custom concentrations. While the pre-prepared 0.6% Acetic Acid Water diluent covers the most common acidic-pH reconstitution use case, some research and compounding workflows need different acetic-acid concentrations (e.g., 0.1%, 0.3%, 1.0%) depending on the specific peptide solubility and stability requirements. Glacial acetic acid (concentrated, anhydrous, ≥99.7%) is the starting material for in-house preparation of arbitrary acidic-pH diluents at the target dilution. PeptideXpo supplies glacial acetic acid as a ≥99.0% HPLC-purity solvent in 10 ml sealed containers. This SKU is a process auxiliary, not a peptide API, and the analytical workflow is the standard solvent-grade specification (GC, water content, residual impurities) rather than peptide-style HPLC + mass spec. Buyers preparing in-house diluents should follow local pharmacopeia requirements for solvent quality and the resulting diluent should be sterilized before any injectable-grade use.
Who buys this, and why
Custom-blend buyers are almost always OEM clients building a branded product around a specific ratio of two or more peptides. The development workflow is collaborative: ratio target, analytical method to verify it, stability protocol in the chosen carrier, and packaging selection are all defined in the OEM brief before the first commercial run. Sample-stage volumes are usually 5-10 g of finished blend; commercial MOQ depends on the components.
Primary buyer fit: academic and contract research laboratories and 503A / 503B compounding pharmacies.
Specifications
Documentation available on request
Regulatory note
Sold as a multi-peptide active for research and for OEM-formulated finished products under the receiving brand's regulatory framework. Blend composition, finished-product safety, labeling claims, and notification responsibilities remain with the brand owner. Component-level analytical data is supplied for every batch.
Frequently asked questions
Glacial acetic acid is the anhydrous (concentrated, ≥99% pure) form of acetic acid, distinguished from food-grade vinegar (typically 4-7% acetic acid in water) or laboratory dilute acetic acid (10-50% in water). 'Glacial' refers to the crystalline appearance of pure acetic acid below its freezing point (16.6 °C), pure anhydrous acetic acid forms ice-like crystals at typical winter temperatures, hence the name. Glacial acetic acid is a solvent/process-auxiliary, not a peptide API; it is supplied as a starting material for in-house preparation of custom acidic-pH reconstitution diluents at the buyer's target dilution. Do not use food-grade vinegar in research or compounding contexts where glacial acetic acid is specified, the impurity profile is fundamentally different.
Glacial acetic acid is corrosive, direct contact causes chemical burns, and the vapor is irritating to mucous membranes at concentrations above ~10 ppm. Safe-handling requires: (1) fume hood for any operation that involves opening the container or transferring volumes, (2) appropriate PPE (chemical-resistant gloves, splash-proof goggles, lab coat), (3) compatible storage container (glass or specific corrosion-resistant plastics like Teflon; standard polypropylene degrades over time), (4) segregation from strong oxidizers and bases. The 10 mL fill size is matched to typical research-lab consumption, small enough to limit exposure if a container is breached, large enough to support routine in-house diluent preparation. Spills should be neutralized with sodium bicarbonate before water-cleanup.
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