N-(4,5-Dihydro-5-oxo-1-phenyl-1H-pyrazol-3-yl)-9-octadecenamide
N-(4,5-Dihydro-5-oxo-1-phenyl-1H-pyrazol-3-yl)-9-octadecenamide (CAS 74677-80-8) is a heterocyclic pyrazolone building block in which a 3-amino-1-phenyl-2-pyrazolin-5-one core is acylated with an unsaturated C18 (oleoyl) fatty-acid chain. Its molecular formula is C27H41N3O2 with a molar mass of 439.63 g/mol. Tech Serve Solutions supplies it as a research-grade fine chemical (assay 75%) for chemical synthesis and as a heterocyclic intermediate.
- Synonyms
- N-(4,5-Dihydro-5-oxo-1-phenyl-1H-pyrazol-3-yl)-9-octadecenamideN-(5-Oxo-1-phenyl-4,5-dihydro-1H-pyrazol-3-yl)-9-octadecenamide9-Octadecenamide, N-(4,5-dihydro-5-oxo-1-phenyl-1H-pyrazol-3-yl)-N-(5-oxo-1-phenyl-2-pyrazolin-3-yl)oleamideCAS 74677-80-8MFCD07798661

Heterocyclic building block
Used as a pyrazolone (2-pyrazolin-5-one) building block in chemical synthesis, providing a 1-phenylpyrazol-5-one core for the preparation of more complex heterocyclic structures.
Pharmaceutical and fine-chemical intermediate
Serves as an intermediate in research-scale synthesis, where its amino-pyrazolone scaffold can be elaborated or further functionalised. Specific downstream uses depend on the customer's route.
Functionalised amphiphilic scaffold
Combines a polar heterocyclic head group with a long, unsaturated octadecenoyl (oleyl-derived) chain, making it of interest where a lipophilic fatty-acid amide is to be attached to a pyrazolone unit.
Laboratory reagent for research
Supplied for analytical, method-development and exploratory laboratory work that calls for this specific substituted pyrazolone amide.
| Molecular weight | 439.63 |
|---|---|
| Empirical formula | C27H41N3O2 |
| Assay | 75% |
| Melting point | 150-156 °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) | 26-37/39 |
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 N-(4,5-Dihydro-5-oxo-1-phenyl-1H-pyrazol-3-yl)-9-octadecenamide used for?
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It is used mainly as a heterocyclic building block and research-scale intermediate in chemical synthesis. The molecule pairs a 1-phenyl-pyrazol-5-one (pyrazolone) core with an unsaturated C18 fatty-acid amide, so it is of interest where that combination is required. Specific downstream applications depend on the user's synthetic route.
What is the CAS number and molecular formula of N-(4,5-Dihydro-5-oxo-1-phenyl-1H-pyrazol-3-yl)-9-octadecenamide?
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The CAS number is 74677-80-8. The empirical formula is C27H41N3O2 (Hill notation) with a molecular weight of 439.63 g/mol. The MDL number is MFCD07798661, and the reported melting point is 150-156 °C (lit.).
What grade and purity does Tech Serve Solutions supply?
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It is supplied as a research/technical-grade fine chemical with a typical assay of 75%. We do not represent this material as USP, BP or EP pharmacopoeial grade. A current specification or certificate of analysis can be provided with each batch on request.
What are the safety and handling requirements?
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The material is classified 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 a N95-type dust mask, eye shields and gloves, avoid generating dust, and follow the precautionary advice P261 and P305+P351+P338. It is assigned WGK 3 (German water-hazard class), so prevent release to the environment. Always consult the Safety Data Sheet before use.
How is N-(4,5-Dihydro-5-oxo-1-phenyl-1H-pyrazol-3-yl)-9-octadecenamide packed, shipped and exported?
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It is packed in tightly closed, labelled containers sized to the order, from gram-scale research quantities upward, with full documentation. Tech Serve Solutions exports globally, supplying the Safety Data Sheet and certificate of analysis and arranging compliant transport and labelling for your destination.
How do I request a sample or quote?
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Contact Tech Serve Solutions with the product name or CAS number 74677-80-8 and your required quantity, purity and destination. We will respond with availability, lead time, documentation and a formal quotation.
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