4-Hydroxy-3-methylbenzoic acid

CAS 499-76-3HOC6H3(CH3)CO2HChemical Synthesis

4-Hydroxy-3-methylbenzoic acid (CAS: 499-76-3), with the molecular formula HOC6H3(CH3)CO2H and a molecular weight of 152.15 g/mol, is a substituted benzoic acid derivative. This aromatic compound serves as a valuable building block in organic synthesis. It is frequently employed in the preparation of more complex molecules across various chemical sectors, including pharmaceuticals and materials science. Tech Serve Solutions offers this chemical with a typical assay of 97%.

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4-Hydroxy-3-methylbenzoic acid (HOC6H3(CH3)CO2H) — chemical structure, CAS 499-76-3; Chemistry, fine chemical supplied by Tech Serve Solutions

Building BlocksCarbonyl CompoundsCarboxylic AcidsChemical Synthesis

01 /Applications

Organic Synthesis Intermediate

Utilised as a key intermediate in the synthesis of diverse organic compounds. Its functional groups allow for various chemical transformations.

Pharmaceutical Building Block

Serves as a precursor in the development of active pharmaceutical ingredients (APIs) and other medically relevant compounds.

Research and Development

Essential reagent in academic and industrial research laboratories for exploring new chemical reactions and developing novel materials.

02 /Properties

Molecular weight	152.15
Linear formula	HOC6H3(CH3)CO2H
Assay	97%
Melting point	173-177 °C

03 /Safety & handling

GHS hazard pictogram: Corrosive (GHS05) — Corrosive

GHS hazard pictogram: Harmful / irritant (GHS07) — Harmful / irritant

Danger

Hazard statements

H302Harmful if swallowed
H315Causes skin irritation
H318Causes serious eye damage
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)	2
Hazard codes (EU)	Xn
Risk statements (R)	22-37/38-41
Safety statements (S)	26-36/39

Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.

04 /Identifiers & registry

CAS number

499-76-3

MDL number

MFCD00270105

05 /Quality & supply

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.

06 /Frequently asked questions

What is 4-Hydroxy-3-methylbenzoic acid used for?

4-Hydroxy-3-methylbenzoic acid is primarily used as a building block and intermediate in organic synthesis, particularly in the pharmaceutical and materials science sectors, and for general research and development purposes.

What are the CAS number and molecular formula?

The CAS number is 499-76-3 and the molecular formula is HOC6H3(CH3)CO2H.

What grade and purity does Tech Serve Solutions supply?

Tech Serve Solutions supplies 4-Hydroxy-3-methylbenzoic acid with a minimum assay of 97%. This product is supplied for research and development or industrial use and is not guaranteed to meet USP, BP, EP, or other pharmacopoeia standards.

How should 4-Hydroxy-3-methylbenzoic acid be handled?

Handle with appropriate personal protective equipment, including a dust mask (type N95 US), eyeshields, and gloves. Avoid breathing dust. Ensure adequate ventilation. This compound is classified as Danger, causing serious eye damage, skin irritation, respiratory irritation, and is harmful if swallowed.