1-(2-Hydroxy-5-methylphenyl)-3-phenyl-1,3-propanedione
1-(2-Hydroxy-5-methylphenyl)-3-phenyl-1,3-propanedione (CAS 29976-82-7) is an aromatic 1,3-diketone building block with the formula HOC6H3(CH3)COCH2COC6H5 (C16H14O3) and a molar mass of 254.28 g/mol. Supplied as a solid of about 97% assay melting at 92-94 °C, this ortho-hydroxyaryl beta-diketone is used chiefly in organic synthesis, where it serves as a versatile intermediate and as a precursor to chromone and flavone-type heterocycles. Tech Serve Solutions supplies it worldwide for research and manufacturing.
- Synonyms
- 1-(2-Hydroxy-5-methylphenyl)-3-phenyl-1,3-propanedione1-(2-Hydroxy-5-methylphenyl)-3-phenylpropane-1,3-dione2'-Hydroxy-5'-methyldibenzoylmethaneHOC6H3(CH3)COCH2COC6H5CAS 29976-82-7MFCD00209591

Synthetic building block
Serves as a reactive 1,3-diketone intermediate in multi-step organic synthesis. The active methylene flanked by two carbonyls enables condensation, alkylation and ring-forming reactions.
Precursor to chromone and flavone scaffolds
As an ortho-hydroxyaryl beta-diketone, it is well documented as a precursor for cyclisation to 2-substituted chromen-4-one (chromone/flavone) heterocycles. This makes it useful in the preparation of oxygen-containing ring systems.
Ligand and chelation chemistry
Beta-diketones of this type are established bidentate ligands that coordinate metal ions through their enolised dicarbonyl system. The compound can therefore be applied in coordination and complexation studies.
Reference and research material
Supplied with defined identity (CAS 29976-82-7, MDL MFCD00209591) and an assay of about 97%, it is suitable as a characterised reagent for laboratory research and method development.
| Molecular weight | 254.28 |
|---|---|
| Linear formula | HOC6H3(CH3)COCH2COC6H5 |
| Assay | 97% |
| Melting point | 92-94 °C(lit.) |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-36 |
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 1-(2-Hydroxy-5-methylphenyl)-3-phenyl-1,3-propanedione used for?
+
It is used primarily as a building block and intermediate in organic synthesis. As an ortho-hydroxyaryl 1,3-diketone, it is a documented precursor to chromone and flavone-type heterocycles and can act as a bidentate ligand in coordination chemistry.
What is the CAS number and molecular formula of 1-(2-Hydroxy-5-methylphenyl)-3-phenyl-1,3-propanedione?
+
The CAS number is 29976-82-7. The linear formula is HOC6H3(CH3)COCH2COC6H5, corresponding to the molecular formula C16H14O3, with a molecular weight of 254.28 g/mol. The MDL number is MFCD00209591.
What grade and purity does Tech Serve Solutions supply?
+
Tech Serve Solutions supplies this compound with an assay of approximately 97%, as a solid melting at 92-94 °C, intended for research and manufacturing use. It is offered as a technical/research-grade material; we do not represent it as USP, BP or EP pharmacopoeial grade. Batch-specific data can be provided on request.
What are the safety and handling requirements?
+
It is classified under GHS07 with the signal word Warning. The hazard statements are H315 (causes skin irritation), H319 (causes serious eye irritation) and H335 (may cause respiratory irritation). Handle with gloves, eye protection and an N95-type dust mask, avoid dust generation, and consult the Safety Data Sheet before use. It carries water-hazard class WGK 3 in Germany, so prevent release to the environment.
How is it packed, shipped and exported?
+
The material is packed in tightly sealed containers appropriate to the order quantity and labelled to GHS requirements. Tech Serve Solutions ships and exports worldwide with the relevant documentation, including a Safety Data Sheet and certificate of analysis. Packaging and transport are arranged in line with applicable dangerous-goods and destination-country regulations.
How do I request a sample or quote?
+
Contact Tech Serve Solutions with your required quantity, purity and delivery destination to receive a quotation. Samples can be arranged subject to availability; please specify your intended research or manufacturing application when enquiring.
▶ 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-Hydroxyethyl)-1H-1,2,3-triazole-4-carboxylic acid
Chemical Synthesis



