3-Methylisoquinoline
3-Methylisoquinoline (CAS: 1125-80-0, C10H9N) is a heterocyclic organic compound with a molecular weight of 143.19 g/mol. This isoquinoline derivative serves as a valuable building block in chemical synthesis. It has been utilised in the preparation of other chemical entities, such as 3-aminoisoquinoline, making it a useful intermediate for researchers in organic chemistry and medicinal chemistry.

Chemical Synthesis Intermediate
3-Methylisoquinoline functions as a foundational component in organic synthesis. Its structure allows for further chemical modifications, enabling the creation of more complex molecules with potential applications in various scientific fields.
Preparation of Aminoisoquinolines
This compound has been historically used in the synthesis of 3-aminoisoquinoline, as documented in chemical literature. This specific application highlights its utility in accessing important derivative structures within the isoquinoline family.
Research and Development
As a heterocyclic building block, 3-Methylisoquinoline is employed in research laboratories for the exploration of new chemical reactions and the development of novel compounds. Its availability supports advancements in areas like medicinal chemistry and materials science.
| Molecular weight | 143.19 |
|---|---|
| Empirical formula | C10H9N |
| Assay | 98% |
| Boiling point | 251 °C(lit.) |
| Application | 3-Methylisoquinoline was used to prepare 3-aminoisoquinoline1. |
| Melting point | 63-65 °C(lit.) |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- 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) | 36/37/38 |
| Safety statements (S) | 26-37/39 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Gene Information | human ... CYP1A2(1544) |
|---|
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 3-Methylisoquinoline used for?
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3-Methylisoquinoline is primarily used as a building block in chemical synthesis, notably for the preparation of compounds such as 3-aminoisoquinoline, supporting research in organic and medicinal chemistry.
What are the CAS number and chemical formula for 3-Methylisoquinoline?
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The CAS number for 3-Methylisoquinoline is 1125-80-0, and its chemical formula is C10H9N.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 3-Methylisoquinoline with a purity of 98% (assay). We do not represent this product as USP, BP, EP, or any other pharmacopoeia grade.
How should 3-Methylisoquinoline be handled safely?
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Handling 3-Methylisoquinoline requires appropriate personal protective equipment, including a dust mask (type N95 US), eyeshields, and gloves. Ensure adequate ventilation to avoid respiratory irritation (H335). It is also a skin and eye irritant (H315, H319).
Is 3-Methylisoquinoline available for export?
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Yes, Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals, including 3-Methylisoquinoline, and can fulfil export orders worldwide.
How can I request a quote or sample for 3-Methylisoquinoline?
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To request a quote or sample for 3-Methylisoquinoline, please contact our sales team through the website or by phone. We will be happy to assist with your inquiry.
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