5-Bromo-2-methylaniline
5-Bromo-2-methylaniline (CAS: 39478-78-9) is an organic chemical compound with the formula BrC6H3(CH3)NH2 and a molecular weight of 186.05 g/mol. This substituted aniline derivative serves as a valuable building block in organic synthesis. It is primarily utilised in the chemical industry for the development of novel compounds and intermediates, contributing to advancements in various research and development sectors.
- IUPAC
- 5-Bromo-o-toluidine
- Synonyms
- 5-Bromo-o-toluidine

Organic Synthesis Intermediate
5-Bromo-2-methylaniline is employed as a key intermediate in the synthesis of more complex organic molecules. Its structure allows for further functionalisation, making it useful in multi-step synthetic routes for pharmaceuticals and agrochemicals.
Research and Development
This compound is utilised in academic and industrial research laboratories for the exploration of new chemical reactions and the creation of novel materials. Its specific substitution pattern makes it a point of interest for chemists developing targeted molecular structures.
Building Block for Heterocycles
The amine and bromo functionalities present in 5-Bromo-2-methylaniline make it a suitable precursor for constructing various heterocyclic ring systems. These systems are fundamental components in many biologically active compounds.
| Molecular weight | 186.05 |
|---|---|
| Linear formula | BrC6H3(CH3)NH2 |
| Assay | 97% |
| Boiling point | 139 °C/17 mmHg(lit.) |
| Density | 1.49 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.614(lit.) |
| Melting point | 33 °C(lit.) |

Hazard statements
- H302Harmful if swallowed
- H312Harmful in contact with skin
- H315Causes skin irritation
- H319Causes serious eye irritation
- H332Harmful if inhaled
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 110 °C / 230 °F |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 20/21/22-36/37/38 |
| 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 5-Bromo-2-methylaniline used for?
+
5-Bromo-2-methylaniline (CAS: 39478-78-9) is primarily used as an intermediate in organic synthesis and as a building block in chemical research and development for creating new compounds and heterocyclic structures.
What is the CAS number and chemical formula for 5-Bromo-2-methylaniline?
+
The CAS number for 5-Bromo-2-methylaniline is 39478-78-9 and its chemical formula is BrC6H3(CH3)NH2.
What grade and purity does Tech Serve Solutions supply for 5-Bromo-2-methylaniline?
+
Tech Serve Solutions supplies 5-Bromo-2-methylaniline with an assay of 97%. This product is not represented as USP, BP, or EP grade.
What are the primary safety hazards associated with 5-Bromo-2-methylaniline?
+
5-Bromo-2-methylaniline is classified as harmful if swallowed, in contact with skin, or if inhaled, and causes skin and serious eye irritation. It is labelled with GHS07 (Warning) and requires appropriate personal protective equipment, including eyeshields, faceshields, and suitable gloves and respirators.
How is 5-Bromo-2-methylaniline packed, shipped, and exported?
+
Tech Serve Solutions expertly packs, ships, and exports fine chemicals like 5-Bromo-2-methylaniline globally, adhering to all necessary regulations for safe transport and international trade.
How can I request a sample or a quote for 5-Bromo-2-methylaniline?
+
To request a sample or a quote for 5-Bromo-2-methylaniline, please contact the Tech Serve Solutions sales team via our website or direct inquiry channels.
▶ 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