Molekula
1-Phenyl-3-methyl-5-pyrazolone
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
1-Phenyl-3-methyl-5-pyrazolone (PMP) is a key organic compound primarily used as a reagent in analytical chemistry for derivatizing carbonyl compounds in GC/MS and HPLC analysis, as well as in the synthesis of pharmaceuticals and dyes. It appears as a white to pale yellow crystalline powder with a CAS number of 89-25-8, molecular formula C10H10N2O, and a molecular weight of 174.20 g/mol. Store at ambient temperatures. The product carries a signal word of Warning for safety handling. Molekula supplies 1-Phenyl-3-methyl-5-pyrazolone from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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500 g — $88.70 per pack
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Specifications
| Property | Value |
|---|---|
| Appearance | Light yellow powder |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | White powder or crystals |
| Melting Point | 127 °C |
| Boiling Point | 191 °C at 17 mmHg; 287 °C at 105 mmHg |
| Refractive Index | 1.637 |
| pKa | pKa = 7 |
Source: PubChem CID 4021 (HSDB, DrugBank)
Identification
| Property | Value |
|---|---|
| SKU | 70986538 |
| CAS Number | 89-25-8 |
| IUPAC Name | 5-methyl-2-phenyl-4H-pyrazol-3-one |
| EC Number | 201-891-0 |
| Molecular Formula | C10H10N2O |
| Molecular Weight | 174.20 |
| Exact Mass | 174.0793 |
| SMILES | CC1=NN(C(=O)C1)C2=CC=CC=C2 |
| InChIKey | QELUYTUMUWHWMC-UHFFFAOYSA-N |
| InChI | InChI=1S/C10H10N2O/c1-8-7-10(13)12(11-8)9-5-3-2-4-6-9/h2-6H,7H2,1H3 |
| PubChem CID | 4021 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2933199000 |
| Tariff Code | 2933199040 |
Safety & GHS
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Health Hazard
GHS07
Hazard statements
- H302 Harmful if swallowed
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+312 IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- C.I. Developer 1
- Developer Z
- edaravone
- MCI 186
- Methylphenylpyrazolone
- Norantipyrine
- Norphenazone
- Phenylmethylpyrazolone
- Radicava
- Radicut
Frequently asked questions
What is 1-Phenyl-3-methyl-5-pyrazolone commonly used for?
It is primarily used as a key intermediate in the synthesis of pharmaceuticals (e.g., phenazone derivatives) and analytical reagents, including the pre-column derivatization of reducing sugars for HPLC analysis and the production of pyrazolone dyes.
What is the molecular formula and molecular weight of this compound?
The molecular formula is C10H10N2O, and the molecular weight is 174.20 g/mol.
How should 1-Phenyl-3-methyl-5-pyrazolone be stored?
Store in a tightly sealed container at ambient temperature, away from moisture and direct sunlight.
What grades or purities of this compound does Molekula supply?
We supply analytical grade (98%+ purity) and technical grade for industrial applications—confirm availability for your specific needs.
Can Molekula supply this product in bulk quantities?
Yes, we offer bulk packaging options (e.g., 1 kg, 5 kg, and larger quantities) for both research and industrial customers—contact us for pricing and lead times.
What documentation comes with an order of 1-Phenyl-3-methyl-5-pyrazolone?
Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS), and a packing list with batch-specific details.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.