4-Methoxyphenylhydrazine hydrochloride
4-Methoxyphenylhydrazine hydrochloride (CAS: 19501-58-7) is an organic compound with the molecular formula C7H10N2O·HCl and a molecular weight of 174.63 g/mol. This hydrazine derivative serves as a valuable building block in chemical synthesis, particularly for constructing nitrogen-containing heterocyclic compounds. It is utilised in research and development for creating novel molecules, with specific applications noted in the preparation of complex organic structures such as substituted thiadiazoles.

Organic Synthesis Intermediate
4-Methoxyphenylhydrazine hydrochloride is employed as a key intermediate in the synthesis of various organic compounds. Its structure allows for facile incorporation into more complex molecular architectures, making it useful in drug discovery and materials science research.
Heterocyclic Compound Preparation
This compound is instrumental in the preparation of nitrogen-containing heterocyclic systems. A documented application includes its use in the synthesis of substituted 1,2,4-thiadiazoles, a class of compounds with potential biological activity.
Research and Development
Used in laboratory settings for exploring new synthetic pathways and developing novel chemical entities. It is a reagent for chemists investigating new molecular structures and functionalities.
| Molecular weight | 174.63 |
|---|---|
| Linear formula | CH3OC6H4NHNH2·HCl |
| Assay | ≥99.0% (AT) |
| Application | 4-Methoxyphenylhydrazine hydrochloride was used in the preparation of 5-cyano-3-(5-methoxy-2-methylindol-3-yl)-1,2,4-thiadiazole1. |
| Melting point | 160-162 °C (dec.)(lit.) |

Hazard statements
- H302Harmful if swallowed
- H312Harmful in contact with skin
- H317May cause an allergic skin reaction
- H332Harmful if inhaled
Precautionary statements
- P280Wear protective gloves, clothing and eye/face protection
| Protective equipment | dust mask type N95 (US), Eyeshields, Faceshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 20/21/22 |
| Safety statements (S) | 36/37 |
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 4-Methoxyphenylhydrazine hydrochloride used for?
+
4-Methoxyphenylhydrazine hydrochloride is primarily used as a building block in organic synthesis and for the preparation of heterocyclic compounds, such as substituted 1,2,4-thiadiazoles in research and development settings.
What is the CAS number and molecular formula?
+
The CAS number is 19501-58-7, and the molecular formula is C7H10N2O·HCl.
What grade and purity does Tech Serve Solutions supply?
+
Tech Serve Solutions supplies 4-Methoxyphenylhydrazine hydrochloride with an assay of ≥99.0% (AT). We do not represent this product as USP, BP, or EP grade.
How should I safely handle 4-Methoxyphenylhydrazine hydrochloride?
+
This compound is harmful if swallowed, in contact with skin, or if inhaled, and may cause an allergic skin reaction. Recommended personal protective equipment includes a dust mask type N95 (US), eyeshields, faceshields, and gloves. Handle in a well-ventilated area. Always consult the Safety Data Sheet (SDS) before use.
Is this product a controlled substance?
+
The provided data does not indicate that 4-Methoxyphenylhydrazine hydrochloride is a controlled substance.
How is this chemical exported and shipped?
+
Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals, including 4-Methoxyphenylhydrazine hydrochloride, adhering to all relevant international shipping and export regulations.
How can I request a sample or quote?
+
To request a sample or a quote for 4-Methoxyphenylhydrazine hydrochloride, please contact our sales team through the website or designated contact 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