Indoline-2-carboxylic acid
Indoline-2-carboxylic acid (CAS: 78348-24-0), with the molecular formula C9H9NO2 and a molecular weight of 163.17 g/mol, is a heterocyclic organic compound. It serves as a valuable building block in organic synthesis, particularly within the fields of chemical biology and peptide chemistry. Its structure lends itself to the creation of more complex molecules, including unnatural amino acid derivatives for research and development purposes.

Chemical Synthesis Intermediate
Utilised as a key intermediate in the synthesis of diverse organic compounds. Its indoline core and carboxylic acid functionality allow for various chemical modifications and derivatisations.
Peptide Chemistry
Incorporated into peptide chains as an unnatural amino acid derivative. This can impart unique structural or functional properties to peptides for research applications.
Chemical Biology Research
Employed as a tool compound or building block in the investigation of biological processes. It may be used to synthesise probes or modified biomolecules for studying cellular mechanisms.
Unnatural Amino Acid Synthesis
Serves as a precursor for the synthesis of novel, non-proteinogenic amino acids. These modified amino acids are important for expanding the scope of biochemical and pharmaceutical research.
| Molecular weight | 163.17 |
|---|---|
| Empirical formula | C9H9NO2 |
| Assay | 97% |
| Melting point | 168 °C (dec.)(lit.) |


Hazard statements
- H317May cause an allergic skin reaction
- H361Suspected of damaging fertility or the unborn child
Precautionary statements
- P280Wear protective gloves, clothing and eye/face protection
| Protective equipment | Eyeshields, Faceshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 43-48/22-62 |
| Safety statements (S) | 22-36/37 |
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 Indoline-2-carboxylic acid used for?
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Indoline-2-carboxylic acid is primarily used as an intermediate in chemical synthesis, particularly in peptide chemistry and for creating unnatural amino acid derivatives for chemical biology research.
What are the CAS number and molecular formula for Indoline-2-carboxylic acid?
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The CAS number for Indoline-2-carboxylic acid is 78348-24-0, and its molecular formula is C9H9NO2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Indoline-2-carboxylic acid with an assay of 97%. We do not represent this product as USP, BP, EP, or any other pharmacopoeia grade.
How should Indoline-2-carboxylic acid be handled safely?
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Handle with appropriate personal protective equipment, including eyeshields, gloves, and respiratory protection (type N100 US or P3 EN143). Indoline-2-carboxylic acid is a skin sensitiser and may cause harm if swallowed or inhaled, and is suspected of damaging fertility or the unborn child. Ensure good ventilation. Always consult the Safety Data Sheet before use.
Is Indoline-2-carboxylic acid suitable for export?
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Yes, Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals and laboratory reagents.
How can I request a sample or quote for Indoline-2-carboxylic acid?
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Please contact our sales team via the website or by phone to request a sample or a quotation for Indoline-2-carboxylic acid.
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