C12H13ClN4
248.71 g/mol
APIWarning
Pyrimethamine
CAS58-14-0EC200-364-2
Category
API
Compound Class
Amine
Primary Use
Pharmaceutical Raw Material
Pyrimethamine is a crystalline active pharmaceutical ingredient that has been characterized in multiple polymorphic and pseudopolymorphic forms. It is primarily supplied as a raw material for pharmaceutical manufacturing.
Pharmaceutical raw material for antimalarial and antiparasitic drug productsAPI used in veterinary medication 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 58-14-0
Related Compounds
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pharmaceutical raw material
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pharmaceutical raw material
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Testosterone
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pharmaceutical raw material
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Chlordiazepoxide
CAS58-25-3
pharmaceutical raw material
Referencesame scaffold
5-(4-Chlorophenyl)-6-methylpyrimidine-2,4(1H,3H)-diimine
CAS3275-44-3
pharmaceutical intermediate
Referencesame scaffold
N-[5-(4-Bromophenyl)-6-chloro-4-pyrimidinyl]-N'-propylsulfamide
CAS1393813-42-7
pharmaceutical intermediate
Referencesame scaffold
Macitentan metabolite M4
CAS1393813-43-8
pharmaceutical raw material
Referencesame scaffold
4,6-Dichloro-5-(4-bromophenyl)pyrimidine
CAS146533-41-7
pharmaceutical intermediate
Safety Reference
Warning
H302Harmful if swallowed
Regulatory Compliance1
- California Proposition 65USRegulation
Customs Tariff Classification
The international HS code for Pyrimethamine (CAS 58-14-0) is 2933.59.
HS code (international, 6-digit)
2933.59
EU CN code (8-digit)
2933 59 95
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-(4-chlorophenyl)-6-ethylpyrimidine-2,4-diamine
InChIKey
WKSAUQYGYAYLPV-UHFFFAOYSA-N
SMILES
CCC1=C(C(=NC(=N1)N)N)C2=CC=C(C=C2)Cl
Synonyms (65)
- Pirimetamina [INN-Spanish]
- Pyrimethamine (JAN/USP/INN)
- Pyrimethamine, European Pharmacopoeia (EP)
- Pyrimethamine, United States Pharmacopeia (USP)
- Pyrimethaminum [INN-Latin]
- 4753 R.P.
- 4km0
- BW 50-63
- CRL-8131 & Pyrimethamine
- CRL-8142 & Pyrimethamine
- Chloridin
- Chloridine
- Chloridyn
- Darachlor
- Daraclor
- Daraclor (Salt/Mix)
- Darapram
- Daraprim
- Daraprim (TN)
- Daraprime
- Diaminopyritamin
- Erbaprelina
- Ethylpyrimidine
- Khloridin
- Lactoferrin B & Pyrimethamine
- Lactoferrin H & Pyrimethamine
- Malacid
- Malocid
- Malocide
- Maloprim
- PYRIMETHAMINE [MART.]
- Pirimecidan
- Pirimetamin
- Pirimetamina
- Pirimetamina [Spanish]
- Primethamine
- Pyremethamine
- Pyrimethamin
- Pyrimethamine (Pyr)
- Pyrimethamine (Standard)
- Pyrimethamine CRS
- Pyrimethamine RS
- Pyrimethamine, VETRANAL(TM)
- Pyrimethaminum
- Tindurin
- Tinduring
- pyrimethamine