Ethotoin is a hydantoin-class antiepileptic active pharmaceutical ingredient (API). It is chemically related to phenytoin and has anticonvulsant properties. Ethotoin has been used in pharmaceutical formulations for the management of certain seizure disorders, particularly generalized tonic-clonic and focal seizures.
Ethotoin is a synthetic hydantoin derivative developed as an anticonvulsant pharmaceutical ingredient. It is structurally related to phenytoin and acts primarily by reducing abnormal neuronal excitability.
CAS Number: 86-35-1
Molecular Formula: C₁₁H₁₂N₂O₂
Molecular Weight: 204.23 g/mol
Ethotoin exerts anticonvulsant activity primarily by reducing excessive neuronal excitability. Its pharmacological activity is associated with modulation of voltage-gated sodium channels, helping stabilize neuronal membranes and reduce repetitive neuronal firing.
Its effects include:
Ethotoin has been used in pharmaceutical formulations for:
The exact therapeutic application depends on the formulation and regulatory status in the relevant market.
Ethotoin is a hydantoin anticonvulsant API with defined chemical and physical characteristics. Pharmaceutical-grade material requires appropriate control of identity, assay, related substances and other quality attributes.
Typical quality evaluation may include:
Pharmaceutical-grade Ethotoin should comply with the applicable approved specification, pharmacopoeial requirements where applicable, and relevant regulatory standards.
A qualified supplier should provide Certificate of Analysis (CoA), specification sheet, SDS/MSDS, batch traceability and applicable regulatory documentation.
Store Ethotoin in a tightly closed container, protected from excessive moisture, heat and direct light, according to the manufacturer's approved storage and stability requirements.
| Parameter | Specification |
|---|---|
| Appearance | White to off-white crystalline powder |
| Identification | IR & HPLC compliant |
| Assay (HPLC) | 98.0% – 102.0% |
| Loss on Drying | NMT 1.0% |
| Residue on Ignition | NMT 0.5% |
| Heavy Metals | NMT 20 ppm |
| pH (1% Solution) | 2.0 – 4.0 |
| Individual Impurity | NMT 0.5% |
| Total Impurities | NMT 1.0% |
| Water Content | NMT 1.0% |