3-Hydroxyisoquinoline
3-Hydroxyisoquinoline (CAS: 7651-81-2), with the molecular formula C9H7NO and a molecular weight of 145.16, is a key heterocyclic building block. It is primarily utilised in chemical synthesis and research laboratories. This compound is recognised for its role in the construction of more complex molecular architectures. It is supplied by Tech Serve Solutions with an assay of 99% for demanding research and development applications.
- IUPAC
- 3-Isoquinolinol

Organic Synthesis Intermediate
3-Hydroxyisoquinoline serves as a valuable intermediate in the synthesis of various organic compounds. Its isoquinoline core allows for diverse functionalisation in the development of novel molecules.
Research and Development
This compound is employed in academic and industrial research laboratories for exploring new chemical reactions and developing novel chemical entities. Its structural features are of interest in medicinal chemistry research.
Heterocyclic Chemistry
As a derivative of isoquinoline, 3-Hydroxyisoquinoline is used in studies and applications within the field of heterocyclic chemistry. It contributes to the understanding and synthesis of nitrogen-containing ring systems.
| Molecular weight | 145.16 |
|---|---|
| Empirical formula | C9H7NO |
| Assay | 99% |
| Melting point | 192-194 °C(lit.) |


Hazard statements
- H302Harmful if swallowed
- H318Causes serious eye damage
Precautionary statements
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 22-41 |
| 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.
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-Hydroxyisoquinoline used for?
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3-Hydroxyisoquinoline is primarily used as a building block in organic synthesis and in research and development, particularly within heterocyclic chemistry.
What are the CAS number and molecular formula for 3-Hydroxyisoquinoline?
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The CAS number for 3-Hydroxyisoquinoline is 7651-81-2, and its molecular formula is C9H7NO.
What grade and purity does Tech Serve Solutions supply for 3-Hydroxyisoquinoline?
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Tech Serve Solutions supplies 3-Hydroxyisoquinoline with an assay of 99%. We do not represent this product as meeting any specific pharmacopoeia standards like USP, BP, or EP unless explicitly stated.
How should 3-Hydroxyisoquinoline be handled safely?
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3-Hydroxyisoquinoline is classified as harmful if swallowed and causes serious eye damage. Handle with appropriate personal protective equipment, including a dust mask (type N95 US), eyeshields, and gloves. Avoid dust formation and ensure good ventilation. Refer to the Safety Data Sheet for detailed handling procedures.
Is 3-Hydroxyisoquinoline a controlled substance?
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The provided data does not indicate that 3-Hydroxyisoquinoline is a controlled substance.
How is 3-Hydroxyisoquinoline packed and shipped?
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3-Hydroxyisoquinoline is carefully packed to ensure safe transport and export. Please contact our sales team for specific packaging and shipping details relevant to your region.
How can I request a sample or quote for 3-Hydroxyisoquinoline?
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To request a sample or a quote for 3-Hydroxyisoquinoline, please contact the Tech Serve Solutions sales department via our website or direct inquiry channels.
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