6-Guanidinohexanoic acid
6-Guanidinohexanoic acid (CAS 6659-35-4) is a bifunctional organic compound with the linear formula NH2C(NH)NH(CH2)5COOH and a molecular weight of 173.21 g/mol. This chemical serves as a valuable linker and crosslinker in various chemical synthesis and chemical biology applications. It possesses both a guanidino group and a carboxylic acid group, enabling its use in diverse biochemical research and material science contexts.
- IUPAC
- 6-Guanidinocaproic acid

Chemical Synthesis
Utilised as a building block in organic synthesis, 6-Guanidinohexanoic acid can be incorporated into more complex molecular structures due to its bifunctional nature. Its distinct reactive groups allow for selective modification in multi-step synthetic pathways.
Chemical Biology
This compound finds application as a linker in chemical biology, facilitating the conjugation of biomolecules or other chemical entities. Its structure is suitable for creating probes or modifying biological systems for research purposes.
Linkers and Crosslinkers
The dual functionality of 6-Guanidinohexanoic acid makes it an effective linker or crosslinker. It can bridge different molecules or surfaces, offering utility in areas such as bioconjugation and the development of novel materials.
| Molecular weight | 173.21 |
|---|---|
| Linear formula | NH2C(NH)NH(CH2)5COOH |
| Assay | ≥98.0% |
| Melting point | ~310 °C (dec.) |
| Protective equipment | Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter |
|---|---|
| Water hazard class (WGK, DE) | 3 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is 6-Guanidinohexanoic acid used for?
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6-Guanidinohexanoic acid is used in chemical synthesis, chemical biology, and as a linker and crosslinker. It acts as a bifunctional molecule suitable for various research and development applications.
What is the CAS number and formula for 6-Guanidinohexanoic acid?
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The CAS number is 6659-35-4, and its linear formula is NH2C(NH)NH(CH2)5COOH.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 6-Guanidinohexanoic acid with an assay of ≥98.0%. This is a research-grade chemical; TSS does not represent it as USP, BP, or EP grade.
How should 6-Guanidinohexanoic acid be handled?
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Handling requires appropriate personal protective equipment, including eyeshields and gloves. A type N95 (US) or type P1 (EN143) respirator filter is recommended. The substance has a high melting point with decomposition around 310 °C.
Is 6-Guanidinohexanoic acid a controlled substance?
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Based on the provided data, there is no indication that 6-Guanidinohexanoic acid is a controlled substance.
How is 6-Guanidinohexanoic acid packed and exported?
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6-Guanidinohexanoic acid is carefully packed and exported by Tech Serve Solutions, adhering to international shipping regulations for chemicals. Specific packaging details are available upon request.
How can I request a sample or quote for 6-Guanidinohexanoic acid?
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To request a sample or quote, please contact the Tech Serve Solutions sales team through our website or by phone. Our team will assist you promptly.
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