Indole-2-carboxaldehyde
Indole-2-carboxaldehyde (CAS: 19005-93-7), with the molecular formula C9H7NO and a molecular weight of 145.16 g/mol, is a vital organic building block. This compound serves as a useful starting material in diverse areas of organic synthesis, particularly in the construction of indole derivatives and natural products. Its aldehyde functional group offers reactivity for further chemical transformations, making it a valuable intermediate for researchers in academic and industrial settings.

Indole Chemistry
Indole-2-carboxaldehyde is frequently employed as a foundational component in the synthesis of complex indole ring systems. Its structure readily lends itself to the elaboration of more intricate molecules found in natural products and pharmaceuticals.
Natural Product Synthesis
This aldehyde is a recognised starter material in the total synthesis of various natural products. Its incorporation into synthetic routes allows for the efficient construction of key structural motifs present in biologically active compounds.
Organic Synthesis Building Block
As a versatile heterocyclic building block, Indole-2-carboxaldehyde enables a range of chemical reactions. It is used in the development of novel organic compounds and in research exploring new synthetic methodologies.
| Molecular weight | 145.16 |
|---|---|
| Empirical formula | C9H7NO |
| Assay | 97% |
| Application | Useful starter in indole and natural product chemistry1,2 |
| Melting point | 138-142 °C |

Hazard statements
- H319Causes serious eye irritation
Precautionary statements
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36 |
| Safety statements (S) | 26-36 |
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 Indole-2-carboxaldehyde used for?
+
Indole-2-carboxaldehyde is primarily used as a starter material in indole and natural product chemistry. It serves as a versatile building block in organic synthesis.
What are the CAS number and formula for Indole-2-carboxaldehyde?
+
The CAS number for Indole-2-carboxaldehyde is 19005-93-7, and its molecular formula is C9H7NO.
What grade and purity does Tech Serve Solutions supply?
+
Tech Serve Solutions supplies Indole-2-carboxaldehyde with an assay of 97%. This is typically considered a technical or research grade, and TSS does not represent it as USP, BP, or EP grade.
How should Indole-2-carboxaldehyde be handled safely?
+
Indole-2-carboxaldehyde is classified as a Warning. It can cause serious eye irritation (H319). When handling, wear a dust mask type N95 (US), eyeshields, and gloves. Ensure good ventilation and avoid dust formation. In case of contact with eyes, rinse cautiously with water for several minutes.
Is Indole-2-carboxaldehyde a controlled substance?
+
Based on the provided data, Indole-2-carboxaldehyde is not indicated as a controlled substance.
How is Indole-2-carboxaldehyde packed and exported?
+
Tech Serve Solutions reliably packs and exports fine chemicals globally. Specific packing details and shipping information can be provided upon request.
How can I request a sample or quote for Indole-2-carboxaldehyde?
+
To request a sample or a quotation for Indole-2-carboxaldehyde, please contact our sales team directly through our website or by phone.
▶ Related products

1-(2-Fluorobenzyl)piperazine
C11H15FN2
Chemical Synthesis
1-(2-Fluorophenyl)biguanide hydrochloride
Chemical Synthesis

1-(2-Fluorophenyl)cyclopropanecarboxylic acid
C10H9FO2
Chemical Synthesis
1-(2-Fluorophenyl)piperazine
C10H13FN2
Chemical Synthesis
1-(2-Fluorophenyl)piperazine monohydrochloride
C10H13FN2 · HCl
Chemical Synthesis
1-(2-Furoyl)-1H-benzotriazole
C11H7N3O2
Chemical Synthesis
1-(2-Furoyl)piperazine
C9H12N2O2
Chemical Synthesis
1-(2-Hydroxy-5-methylphenyl)-3-phenyl-1,3-propanedione
Chemical Synthesis
▶ Explore more

3-Methyl-1,5-di-p-tolyl-1,4-pentazadiene
Chemical Synthesis

3-Methyl-1,5-pentanediol
Chemical Synthesis

3-Methyl-1-(2-methylphenyl)-1H-pyrazol-5-amine
C11H13N3
Chemical Synthesis
3-Methyl-1-(3′-sulfoamidophenyl)-5-pyrazolone
C10H11N3O3S
Chemical Synthesis