m-Tolylhydrazine hydrochloride
m-Tolylhydrazine hydrochloride (CAS 637-04-7), with the linear formula CH3C6H4NHNH2 · HCl and a molecular weight of 158.63, is an organic compound used as a chemical intermediate. It is particularly valuable in organic synthesis for the construction of various heterocyclic compounds and other complex molecules. This chemical is supplied by TSS with an assay of 99%.
- IUPAC
- 3-Methylphenylhydrazine hydrochloride
- Synonyms
- 3-Methylphenylhydrazine hydrochloride

Organic Synthesis Intermediate
Serves as a key building block in the synthesis of diverse organic molecules, including pharmaceuticals and agrochemicals. Its hydrazine functionality enables specific reactions for constructing complex structures.
Heterocyclic Compound Synthesis
Utilised in the formation of nitrogen-containing heterocyclic ring systems, which are prevalent motifs in many biologically active compounds. Facilitates cyclisation reactions crucial for drug discovery.
Reagent in Chemical Research
Employed in academic and industrial research laboratories for exploring new synthetic pathways and developing novel chemical entities. Its reactivity profile makes it a versatile reagent.
| Molecular weight | 158.63 |
|---|---|
| Linear formula | CH3C6H4NHNH2 · HCl |
| Assay | 99% |
| Melting point | 184-194 °C (dec.)(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 | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 20/21/22-36/37/38 |
| Safety statements (S) | 26-36/37/39 |
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 m-Tolylhydrazine hydrochloride used for?
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m-Tolylhydrazine hydrochloride (CAS 637-04-7) is primarily used as an intermediate in organic synthesis and for the construction of heterocyclic compounds.
What is the CAS number and formula for m-Tolylhydrazine hydrochloride?
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The CAS number is 637-04-7 and the linear formula is CH3C6H4NHNH2 · HCl.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies m-Tolylhydrazine hydrochloride with an assay of 99%. We do not represent this product as USP, BP, EP, or other pharmacopoeial grades.
How should m-Tolylhydrazine hydrochloride be handled safely?
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This compound is harmful if swallowed, in contact with skin, or if inhaled, and causes skin and eye irritation and may cause respiratory irritation. Wear appropriate personal protective equipment including a dust mask (type N95 US), eyeshields, and gloves. Ensure good ventilation.
How is m-Tolylhydrazine hydrochloride packed and shipped?
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Products are packed according to international shipping regulations. TSS is a specialist global supplier and exporter of fine chemicals.
How can I request a quote or sample?
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Please contact our sales department via the website or phone to request a quotation or a sample of m-Tolylhydrazine hydrochloride.
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