C21H25ClN2O3
388.9 g/mol
APIWarning
Cetirizine
CAS83881-51-0
Category
API
Compound Class
Amine
Primary Use
Pharmaceutical Raw Material
Cetirizine is a second-generation antihistamine used as an active pharmaceutical ingredient in pharmaceutical manufacturing. It is a peripherally selective compound with a molecular structure that includes aromatic rings and an amine group.
active pharmaceutical ingredient for allergy medications
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.
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Related Compounds
StrongSame Parent
Cetirizine hydrochloride
CAS83881-52-1
pharmaceutical raw material
SimilarStructure SimilarSimilarity 0.76
Cetirizine Polyethylene Glycol (PEG) Ester
CAS1509941-93-8
pharmaceutical raw material
ReferenceSame Category
Domperidone maleate
CAS83898-65-1
pharmaceutical raw material
ReferenceSame Category
Azithromycin
CAS83905-01-5
pharmaceutical raw material
ReferenceSame Category
Lisinopril dihydrate
CAS83915-83-7
pharmaceutical raw material
ReferenceSame Category
Mometasone furoate
CAS83919-23-7
pharmaceutical raw material
Referencestereoisomer of
Cetirizine-d4
CAS1219803-84-5
research compound
Referencestereoisomer of
Levocetirizine
CAS130018-77-8
pharmaceutical raw material
Safety Reference
Warning
H302Harmful if swallowed
Customs Tariff Classification
The international HS code for Cetirizine (CAS 83881-51-0) 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
2-[2-[4-[(4-chlorophenyl)-phenylmethyl]piperazin-1-yl]ethoxy]acetic acid
InChIKey
ZKLPARSLTMPFCP-UHFFFAOYSA-N
SMILES
C1CN(CCN1CCOCC(=O)O)C(C2=CC=CC=C2)C3=CC=C(C=C3)Cl
Synonyms (35)
- Cetirizine (INN)
- Benaday
- Cetiderm
- Cetiderm (TN)
- Cetirizin
- Cetirizina
- Cetirizina [Spanish]
- Cetirizine (See C1876)
- Cetirizine (Standard)
- Cetirizine (dihydrochloride)
- Cetirizinum
- Cetirizinum [Latin]
- Cetrizine
- Cetryn
- Hitrizin Film Tablet
- Humex
- Reactine
- Setir
- Virlix
- Ziptek
- Zirtek
- Zyrlex
- cetirizine
- irizine
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