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Metabolites & Degradation Products

(S)-4-Hydroxy Mephenytoin

Reference StandardAvailable on request

(S)-4-Hydroxy Mephenytoin (CAS 82695-93-0) supplier Zemixal: C12H14N2O3, COA and SDS with every lot, worldwide shipping.

Pack sizes
(S)-4-Hydroxy Mephenytoin chemical structure
CAS number82695-93-0
FormulaC12H14N2O3
Molar mass234.25 g/mol
Physical formSolid
HS code38229090
InChIKeyOQPLORUDZLXXPD-LBPRGKRZSA-N
IUPAC name(5S)-5-ethyl-5-(4-hydroxyphenyl)-3-methylimidazolidine-2,4-dione

About (S)-4-Hydroxy Mephenytoin

(S)-4-Hydroxy Mephenytoin is supplied by Zemixal as a characterised reference material for Phenytoin analysis. Identity at a glance (Reference Standard): CAS 82695-93-0, formula C12H14N2O3 and molar mass 234.25 g/mol. It is handled as a solid.

Where it is used

  • Metabolite identification
  • Stability-indicating methods
  • Impurity profiling

Storage and safety notes

It carries the GHS signal word Warning (H302, H315 and H319), so wear gloves and eye protection and work with good ventilation.

Available as 10 mg, 25 mg, 50 mg and 100 mg. Larger or split packs can be arranged. Each lot travels with a certificate of analysis with characterisation data. Add it to your quote list and our team replies with price, lead time and shipping options within one business day.

Reference standards for Phenytoin

See every impurity, metabolite and related compound we list for this API.

Phenytoin standards

Typical uses

  • Metabolite identification
  • Stability-indicating methods
  • Impurity profiling

Applications

Pharmaceutical Manufacturing and QCResearch Labs and Universities

Specifications and identifiers

Specifications of (S)-4-Hydroxy Mephenytoin
Product name(S)-4-Hydroxy Mephenytoin
Catalogue numberZX-045332
CAS number82695-93-0
IUPAC name(5S)-5-ethyl-5-(4-hydroxyphenyl)-3-methylimidazolidine-2,4-dione
Molecular formulaC12H14N2O3
Molar mass234.25 g/mol
Exact mass234.1004
GradeReference Standard
Physical formSolid
XLogP31.2
H-bond donors / acceptors2 / 3
Topological polar surface area69.6 Ų
HS code38229090
InChIKeyOQPLORUDZLXXPD-LBPRGKRZSA-N
SMILESCC[C@@]1(C(=O)N(C(=O)N1)C)C2=CC=C(C=C2)O
PubChem CID40572060
Synonyms4-Hydroxymephenytoin, (S)-, (5S)-5-Ethyl-5-(4-hydroxyphenyl)-3-methyl-2,4-imidazolidinedione, (5S)-5-Ethyl-5-(4-hydroxyphenyl)-3-methyl-imidazolidine-2,4-dione, 4'-hydroxymephenytoin, (S)-5-Ethyl-5-(4-hydroxyphenyl)-3-methyl-2,4-imidazolidinedione, (S)-5-ethyl-5-(4-hydroxyphenyl)-3-methylimidazolidine-2,4-dione, 2,4-Imidazolidinedione, 5-ethyl-5-(4-hydroxyphenyl)-3-methyl-, (5S)-

Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.

Safety and GHS hazards

GHS07 Irritant or harmful
Irritant or harmful
GHS08 Health hazard
Health hazard

Signal word Warning

  • H302Harmful if swallowed
  • H315Causes skin irritation
  • H319Causes serious eye irritation

Precautionary statements P203, P264, P264 + P265, P270, P280, P301 + P317, P302 + P352, P305 + P351 + P338, P318, P321, P330, P332 + P317, P337 + P317, P362 + P364, P405, P501

Classification summarised from public GHS notifications. It can vary with grade and concentration, so always follow the SDS supplied with your lot.

Pack sizes

Pack sizes of (S)-4-Hydroxy Mephenytoin
10 mgQuoted on request
25 mgQuoted on request
50 mgQuoted on request
100 mgQuoted on request

Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.

Questions about (S)-4-Hydroxy Mephenytoin

Which CAS number identifies (S)-4-Hydroxy Mephenytoin?
(S)-4-Hydroxy Mephenytoin is registered under CAS 82695-93-0. You may also see it listed as 4-Hydroxymephenytoin, (S)-, (5S)-5-Ethyl-5-(4-hydroxyphenyl)-3-methyl-2,4-imidazolidinedione, (5S)-5-Ethyl-5-(4-hydroxyphenyl)-3-methyl-imidazolidine-2,4-dione. Our catalogue number for this item is ZX-045332.
What are the formula and molar mass of (S)-4-Hydroxy Mephenytoin?
For (S)-4-Hydroxy Mephenytoin, its formula is C12H14N2O3 and its molar mass is 234.25 g/mol. The systematic (IUPAC) name is (5S)-5-ethyl-5-(4-hydroxyphenyl)-3-methylimidazolidine-2,4-dione. InChIKey OQPLORUDZLXXPD-LBPRGKRZSA-N lets you match it in any structure database.
How is (S)-4-Hydroxy Mephenytoin used in pharmaceutical QC?
(S)-4-Hydroxy Mephenytoin is a characterised reference material linked to Phenytoin. Laboratories use it to identify and quantify this impurity during method development and validation, stability work, batch release testing and regulatory submissions.
What grade and pack sizes are available for (S)-4-Hydroxy Mephenytoin?
This listing is Reference Standard grade. Standard packs are 10 mg, 25 mg, 50 mg, 100 mg. Larger quantities and custom packing can be quoted on request.
Which documents come with (S)-4-Hydroxy Mephenytoin?
Each lot ships with a batch certificate of analysis and a 16-section GHS safety data sheet. A typical COA or specification sheet can be shared with the quotation before you order.
Can Zemixal ship (S)-4-Hydroxy Mephenytoin to my country?
Yes. Because (S)-4-Hydroxy Mephenytoin is classed as hazardous, it travels in UN-approved packaging as dangerous goods under IATA or IMDG rules, with the export paperwork your broker needs.

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