• # LGM Pharma is a Phenytoin CAS# 57-41-0 API supplier distributor based in the USA. Inquire about DMF, cGMP, price, availability, samples, sourcing, purity and more.
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  • # LGM Pharma offers this active ingredient but not the finished dosage forms.
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Product Details:

  • Product Name: Phenytoin
  • CAS #: 57-41-0
  • Mode of Action:

    Phenytoin acts on sodium channels on the neuronal cell membrane, limiting the spread of seizure activity and reducing seizure propagation. By promoting sodium efflux from neurons, phenytoin tends to stabilize the threshold against hyperexcitability caused by excessive stimulation or environmental changes capable of reducing membrane sodium gradient. This includes the reduction of post-tetanic potentiation at synapses. Loss of post-tetanic potentiation prevents cortical seizure foci from detonating adjacent cortical areas.

  • Pharmacodynamics:

    Phenytoin is an antiepileptic drug which can be useful in the treatment of epilepsy. The primary site of action appears to be the motor cortex where spread of seizure activity is inhibited. Phenytoin reduces the maximal activity of brain stem centers responsible for the tonic phase of tonic-clonic (grand mal) seizures. Phenytoin acts to dampen the unwanted, runaway brain activity seen in seizure by reducing electrical conductance among brain cells. It lacks the sedation effects associated with phenobarbital. There are some indications that phenytoin has other effects, including anxiety control and mood stabilization, although it has never been approved for those purposes by the FDA. Phenytoin is primarily metabolized by CYP2C9.

  • Metabolism:

    Primarily hepatic

  • Toxicity:

    Oral, mouse: LD50 = 150 mg/kg; Oral, rat: LD50 = 1635 mg/kg. Symptoms of overdose include coma, difficulty in pronouncing words correctly, involuntary eye movement, lack of muscle coordination, low blood pressure, nausea, sluggishness, slurred speech, tremors, and vomiting.

  • IUPAC: 5, 5-diphenylimidazolidine-2, 4-dione
  • ATC: N03AB02 N03AB04 N03AB05
  • DrugBank: DB00252 (APRD00241)
  • Formula: C10H16Br2N2O2
  • Molecular Mass: 252.268
  • Synonyms: 5,5-diphenylhydantoin 5,5-Dwufenylohydantoina Difenilhidantoina [Spanish] Dihydantoin Diphenylan Sodium Diphenylhydantoin Diphenylhydantoine [French] Diphenylhydatanoin Fenitoina [INN-Spanish] Phenytoin Sodium Phenytoine Phenytoine [INN-French] Phenytoinum [INN-Latin]
  • SMILES: O=C1NC(=O)C(N1)(C1=CC=CC=C1)C1=CC=CC=C1
  • AHFS Code: 28:12.1
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LGM Pharma Acquires CDMO

On July 27, 2020, LGM Pharma announced its acquisition of the formulation development and drug product contract manufacturing business of Nexgen Pharma, Inc. As a result, you will notice our new logo and visuals throughout the website. We’re working on updates to reflect the exciting, expanded CDMO capabilities and services we now can offer you.

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