Description
NHS-PEG5-NHS is a bifunctional polyethylene glycol derivative supplied as a biochemical reagent with CAS number 756526-03-1 and empirical formula C₂₂H₃₂N₂O₁₃. Its molar mass of 532,5 g/mol enables precise molar calculations for conjugation, crosslinking and linker chemistry in laboratory research. The product is Documented molecular formula and mass data support reproducible formulation of stock solutions and consistent dosing across experimental series. In biochemical and chemical laboratory settings, such PEG-based NHS esters are handled under controlled conditions as part of structured synthesis or bioconjugation workflows. This material is available from manufacturer Carl ROTH for professional laboratory applications. quantity balances economy with flexibility, allowing teams to prepare multiple reaction batches while maintaining clear traceability through CAS number and formula information in protocols, certificates and inventory systems used in research and quality-focused environments.
This article is part of Click chemistry, bioconjugation & synthesis reagents, in Organic chemicals & synthesis reagents.
Key features
- Colour: colorless to yellow
- Form: liquid
- ¹H-NMR Spectrum: corresponds to assigned structure
- Purity (NMR): ≥ 95 %
- CAS number: 756526-03-1
- Pack sizes: 100 mg, 250 mg, 500 mg, 1 g
- Empirical formula: C₂₂H₃₂N₂O₁₃
- Molar mass: 532,5 g/mol
- Storage temperature: -20 °C
- Product type: Biochemical reagent
- Technical Information Sheet:
- Safety Data Sheet:
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Organic chemicals & synthesis reagents
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Click chemistry, bioconjugation & synthesis reagents
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Questions about NHS-PEG5-NHS, 100 mg
What is this article?
NHS-PEG5-NHS, 100 mg is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in Click chemistry, bioconjugation & synthesis reagents, inside Organic chemicals & synthesis reagents, in Lab chemicals.
Click and bioconjugation reagents join two molecules under mild conditions, often an azide to an alkyne, or an NHS ester to an amine. The linker length and the reactive group are the specification. They are small bottles of a reactive compound, and moisture often ruins them.
An organic chemical is built on carbon. In this category it is a building block or a reagent for making another molecule: a starting material, a coupling agent, a polymer, a PEG. Purity is a specification of which impurities remain. The structure, the CAS number and the grade decide whether two bottles are the same substance. Structures and properties are on PubChem. Nomenclature is IUPAC. Classification follows ECHA and the CLP Regulation.
Which category should I open next?
The category is Organic chemicals & synthesis reagents. The sub-category is Click chemistry, bioconjugation & synthesis reagents. The catalogue is Lab chemicals.
Shelves beside this one are Organic building blocks & synthesis reagents and Polymers, PEGs & silicones.
What should I check before I order?
When this page shows a safety data sheet, use that manufacturer file. Hazard text does not belong in the sales description. For a pack size, a grade or a certificate that is not on the page, send a quote request or contact the team.
How does ordering and shipping work?
Luminix Health distributes this article from the heart of Europe. Articles in stock ship within 2–5 business days. Standard delivery is free from €250 excl. VAT. Cold-chain goods and dangerous goods under ADR are never included in that free delivery. The terms are in the Shipping Policy. The full brand index is on shop by brand. Who we are is on about us.
Which other categories should I open?
The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.

