4-Methoxybenzenediazonium tetrafluoroborate
4-Methoxybenzenediazonium tetrafluoroborate (CAS: 459-64-3, Formula: CH3OC6H4N2BF4) is a chemical compound with a molecular weight of 221.95 g/mol. Supplied by Tech Serve Solutions with an assay of 98%, this compound is primarily utilised as a building block in organic synthesis. Its specific applications include the preparation of complex organic molecules, contributing to advancements in chemical research and development.

Azo Coupling Reactions
This diazonium salt serves as a key reagent in azo coupling reactions. It has been specifically employed in the synthesis of azo coupled cyclic β-enaminones, demonstrating its utility in creating complex heterocyclic structures.
Organic Synthesis Building Block
As a versatile organic building block, 4-Methoxybenzenediazonium tetrafluoroborate facilitates the introduction of the 4-methoxyphenylazo group into various molecular architectures. This is valuable for constructing novel organic compounds.
Research and Development
This compound finds application in laboratory settings for research and development purposes. Its reactive nature makes it suitable for exploring new synthetic pathways and developing novel chemical entities.
| Molecular weight | 221.95 |
|---|---|
| Linear formula | CH3OC6H4N2BF4 |
| Assay | 98% |
| Storage temperature | −20°C |
| Application | 4-Methoxybenzenediazonium tetrafluoroborate has been used in the preparation of azo coupled cyclic β-enaminones1. |
| Melting point | 142-144 °C(lit.) |

Hazard statements
- H314Causes severe skin burns and eye damage
Precautionary statements
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
- P310Immediately call a POISON CENTER or doctor
| Protective equipment | Eyeshields, Faceshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges |
|---|---|
| Transport (UN / ADR) | UN 3261 8 / PGII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | C |
| Risk statements (R) | 34 |
| Safety statements (S) | 26-36/37/39-45 |
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-Methoxybenzenediazonium tetrafluoroborate used for?
+
4-Methoxybenzenediazonium tetrafluoroborate is used as a building block in organic synthesis, notably in the preparation of azo coupled cyclic β-enaminones.
What is the CAS number and formula for 4-Methoxybenzenediazonium tetrafluoroborate?
+
The CAS number is 459-64-3 and the linear formula is CH3OC6H4N2BF4.
What grade and purity does Tech Serve Solutions supply?
+
Tech Serve Solutions supplies 4-Methoxybenzenediazonium tetrafluoroborate with an assay of 98%. This is a technical/research grade and is not represented as USP, BP, or EP grade.
What are the safety considerations for handling 4-Methoxybenzenediazonium tetrafluoroborate?
+
This compound is classified as Danger (GHS05) and causes severe skin burns and eye damage (H314). Appropriate personal protective equipment, including eyeshields, face shields, gloves, and respiratory protection, must be used. Handle with extreme caution in a well-ventilated area.
How is 4-Methoxybenzenediazonium tetrafluoroborate shipped and exported?
+
As per the data, it is classified under UN 3261, Class 8, Packing Group II. Tech Serve Solutions is experienced in the global export of chemicals, adhering to all relevant shipping and regulatory requirements.
How can I request a quote or sample?
+
To request a quote or a sample of 4-Methoxybenzenediazonium tetrafluoroborate, please contact our sales team through the website or by phone. Our representatives will be pleased to assist you.
▶ 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