Pentosan Polysulfate
Also known as PPS, Pentosan polysulfate sodium, PPS sodium, Sodium pentosan polysulfate
Pentosan polysulfate is a semi-synthetic polysulfated polysaccharide — a sugar polymer, not a peptide. A research-use profile: what it actually is chemically, its research contexts, and handling.
The first and most important thing to say about pentosan polysulfate is what it is not: it is not a peptide. Nearly every other product in this catalog is a chain of amino acids. Pentosan polysulfate is a chain of sugars — a polysaccharide — that has been heavily sulfated. Getting this right is the whole point of the page, because it changes how the molecule should be understood, described, and handled.
Below is the accurate chemical picture — its polysaccharide identity and semi-synthetic origin — plus the research contexts it appears in and how it is handled. No outcome or dosing claims appear here.
Pentosan polysulfate is a semi-synthetic, highly sulfated polysaccharide derived from plant xylan — a chain of sugar units, not amino acids. It is not a peptide. It is a polymeric, heparin-like sulfated carbohydrate, most commonly supplied as the sodium salt, and does not have a single fixed sequence the way a defined peptide does.
A polysaccharide, not a peptide
Pentosan polysulfate (PPS) is built from xylan, a plant-derived polysaccharide made of xylose sugar units. That xylan backbone is then chemically sulfated to a high degree — the 'polysulfate' in the name — producing a semi-synthetic polymer. Because it is assembled from sugar units rather than amino acids, it has no peptide bonds, no residue sequence, and none of the structural vocabulary that applies to peptides.
It is most commonly handled as the sodium salt (pentosan polysulfate sodium). Being a polymer, it is not a single molecule of one exact mass but a distribution of chain lengths and sulfation patterns — which is a fundamentally different characterization problem from a defined peptide of fixed sequence.
A heparin-like sulfated carbohydrate
Its dense negative charge, courtesy of the many sulfate groups, makes PPS chemically reminiscent of heparin and other glycosaminoglycans — highly anionic sulfated carbohydrates. That heparin-like character is the structural feature most often invoked in the literature to explain its interactions, and it is why PPS is studied in matrix, cartilage, and bladder-lining research contexts where sulfated polysaccharides are relevant.
Grouping PPS with the peptides in this catalog is a catalog convenience, not a chemical statement: it is studied in overlapping recovery and matrix research areas, but it is a different class of molecule entirely.
Characterizing a polymer
Because PPS is a polydisperse polymer rather than a single defined species, its certificate of analysis looks different from a peptide's. Rather than a single clean mass, meaningful characterization addresses things like the source material, degree of sulfation, and molecular-weight distribution. A certificate should tie its specification to a method and a batch identifier. Every lot we list is tied to its own certificate — verify yours by its batch number.
These are research areas the compound is associated with in the literature — not medical claims or intended uses.
Handling & storage
Supplied as a dry solid, most commonly the sodium salt. Stored sealed and cool. As a hygroscopic sulfated polysaccharide it should be protected from moisture; it is dissolved in aqueous buffer when a protocol requires it. Handle per accepted laboratory practice.
Verify a certificate by lot →Common questions
No. It is a semi-synthetic polysulfated polysaccharide — a sulfated sugar polymer derived from plant xylan. It contains no amino acids and no peptide bonds, which sets it apart from the peptides elsewhere in this catalog.
It is made from xylan, a plant-derived polysaccharide of xylose sugar units, which is then heavily sulfated to produce the semi-synthetic polymer. It is most often supplied as the sodium salt.
Its many sulfate groups give it a dense negative charge similar to heparin and other sulfated glycosaminoglycans. That heparin-like anionic character is the structural feature most often cited in the research literature.
This monograph is a research-use reference. It describes composition and the contexts in which the compound has been studied — it is not medical advice, a description of effects, or a recommendation for use. Sold strictly for laboratory and research use; not for human or animal consumption.