5-(p-Methylphenyl)-5-phenylhydantoin
5-(p-Methylphenyl)-5-phenylhydantoin (CAS 51169-17-6), molecular formula C16H14N2O2, is a high-purity chemical supplied by Tech Serve Solutions for chemical synthesis applications, to pharmacopoeia specification (USP, BP, EP). Every batch is tested and ships with a Certificate of Analysis; MSDS and technical data sheets are available on request. Tech Serve Solutions has supplied laboratory reagents, fine chemicals and pharmaceutical intermediates worldwide since 1998.
- IUPAC
- 5-(4-Methylphenyl)-,5-phenylimidazolidine-2,4-dione,5-Phenyl-5-(p-tolyl)hydantoin,MPPH,NSC 32105

| Molecular weight | 266.29 |
|---|---|
| Empirical formula | C16H14N2O2 |
| Assay | ≥99% |
| Solubility | : soluble50 mg/mL, clear to slightly hazy, colorless to light yellow (DMF:HCl(2:1)) |
| Application | 5-(p-Methylphenyl)-5-phenylhydantoin was used as internal standard in quantitative determination of phenytoin in brain microdialysate, saliva and blood from human samples by GC-MS method . It was used in DMD-test to determine chromatographic properties of C8- or C18-bonded phases for clinical and forensic toxicological screening. |
| Melting point | 225-226 °C(lit.) |


Hazard statements
- H302Harmful if swallowed
- H351Suspected of causing cancer
- H361Suspected of damaging fertility or the unborn child
Precautionary statements
- P281Use personal protective equipment as required
| Protective equipment | Eyeshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 63-22-40 |
| Safety statements (S) | 36/37 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Supplied to USP, BP and EP standards. Every batch ships with a Certificate of Analysis (assay, identity, purity); MSDS 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 5-(p-Methylphenyl)-5-phenylhydantoin?
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5-(p-Methylphenyl)-5-phenylhydantoin (CAS 51169-17-6), molecular formula C16H14N2O2, is a high-purity chemical supplied by Tech Serve Solutions for chemical synthesis applications, to USP, BP and EP standards.
What grades of 5-(p-Methylphenyl)-5-phenylhydantoin does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 5-(p-Methylphenyl)-5-phenylhydantoin in USP, BP, EP and reagent/AR grades. Custom specifications for nutraceutical or specialty pharmaceutical applications are available — contact our technical sales team.
What is the CAS number and molecular formula of 5-(p-Methylphenyl)-5-phenylhydantoin?
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5-(p-Methylphenyl)-5-phenylhydantoin has CAS number 51169-17-6 and molecular formula C16H14N2O2. Full specifications appear in the table above and in the Certificate of Analysis.
What is the typical minimum order quantity and lead time for 5-(p-Methylphenyl)-5-phenylhydantoin?
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Sample quantities are available for technical evaluation; bulk MOQ depends on grade and packaging. In-stock material typically ships in 7–10 working days; custom-spec orders take 3–4 weeks. Tech Serve Solutions ships worldwide with full export documentation.
Do you provide a Certificate of Analysis (CoA) with each shipment?
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Yes. Every batch of 5-(p-Methylphenyl)-5-phenylhydantoin ships with a Certificate of Analysis covering assay, identity and purity tests, plus pharmacopoeia conformance where applicable. MSDS and TDS documents are available on request before order placement.
How should 5-(p-Methylphenyl)-5-phenylhydantoin be stored?
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Store 5-(p-Methylphenyl)-5-phenylhydantoin in its original sealed container in a cool, dry place away from direct sunlight and incompatible materials, in line with the storage guidance on the Safety Data Sheet. Reseal between dispensings.
What is 5-(p-Methylphenyl)-5-phenylhydantoin used for?
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5-(p-Methylphenyl)-5-phenylhydantoin is used in chemical synthesis applications across pharmaceutical, research and industrial settings. Our technical team can advise on suitability for your specific process.
How do I request a quote for 5-(p-Methylphenyl)-5-phenylhydantoin?
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Request a quote with your required grade, quantity and destination via https://www.techservesolutions.in/contact or email info@techservesolutions.in. We respond with specifications, a Certificate of Analysis and pricing.
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