C12H14N2O2
218.25 g/mol
APIDanger
Primidone
CAS125-33-7EC204-737-0
Category
API
Compound Class
Heterocycle
Primary Use
Pharmaceutical Raw Material
Primidone is a pharmaceutical raw material belonging to the barbiturate class, used in the manufacturing of anticonvulsant medications. It is a solid compound characterized by the presence of amide and aromatic ring functional groups.
anticonvulsant pharmaceutical intermediateraw material for seizure treatment formulations
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
Restricted or banned substances
Substances on this list are banned or restricted under the named regulation. This page is a compliance reference — verify your obligations under applicable law.
Relevant lists:California Proposition 65
CAS 125-33-7
Related Compounds
ReferenceSame Category
Pipenzolate bromide
CAS125-51-9
pharmaceutical raw material
ReferenceSame Category
Fenpiverinium bromide
CAS125-60-0
pharmaceutical raw material
ReferenceSame Category
Pleuromutilin
CAS125-65-5
pharmaceutical raw material
ReferenceSame Category
Dextromethorphan hydrobromide
CAS125-69-9
pharmaceutical raw material
Safety Reference
Danger
H302Harmful if swallowed
H351Suspected of causing cancer
H360May damage fertility or the unborn child
Regulatory Compliance1
- California Proposition 65USRegulation
Customs Tariff Classification
The international HS code for Primidone (CAS 125-33-7) is 2933.79.
HS code (international, 6-digit)
2933.79
EU CN code (8-digit)
2933 79 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
5-ethyl-5-phenyl-1,3-diazinane-4,6-dione
InChIKey
DQMZLTXERSFNPB-UHFFFAOYSA-N
SMILES
CCC1(C(=O)NCNC1=O)C2=CC=CC=C2
Synonyms (74)
- A1AIA
- Primidona [INN-Spanish]
- Primidone (JP18/USP/INN)
- Primidone for peak identification, European Pharmacopoeia (EP)
- Primidone, European Pharmacopoeia (EP)
- Primidone, United States Pharmacopeia (USP)
- Primidonum [INN-Latin]
- 2-Deoxyphenobarbital
- 2-Desoxyphenobarbital
- Apo Primidone
- Cyral
- Desoxyphenobarbitone
- Hexadiona
- Lepimidin
- Lepsiral
- Liskantin
- Majsolin
- Medi-Pets
- Midone
- Milepsin
- Misodine
- Misolyne
- Mizodin
- Mizolin
- Myidone
- Mylepsin
- Mylepsin Tablets
- Mylepsin, Primidone Medi-Pets
- Mylepsinum
- Mysedon
- Mysoline
- Mysoline (TN)
- Mysoline, Apo-Primidone
- Neurosyn
- Neurosyn Tablets
- PRIMIDONE [MART.]
- Prilepsin
- Primacione
- Primaclone
- Primacone
- Primakton
- Primidon
- Primidona
- Primidone (Standard)
- Primidone (primaclone)
- Primidone - Bio-X trade mark
- Primidone CRS
- Primidone(Mysoline)
- Primidonum
- Primoline
- Prysoline
- Pyrimidone Medi-pets
- Resimatil
- Roe 101
- Sertan
- primidone