C17H19ClN2
286.8 g/mol
Pharmaceutical IntermediateWarning
1-(4-Chlorobenzhydryl)piperazine
CAS303-26-4EC206-137-4
Category
Pharmaceutical Intermediate
Compound Class
Amine
Primary Use
Pharmaceutical Intermediate
1-(4-Chlorobenzhydryl)piperazine is a chemical compound used as a pharmaceutical intermediate. It features a piperazine ring and a chlorinated benzhydryl group, with a molecular weight of approximately 286.
pharmaceutical intermediate
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
1-(4-Chlorobenzhydryl)piperazine
CAS130018-88-1
pharmaceutical intermediate
SimilarStructure SimilarSimilarity 0.79
Diphenylmethylpiperazine
CAS841-77-0
pharmaceutical intermediate
ReferenceSame Category
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pharmaceutical intermediate
ReferenceSame Category
SCHEMBL13762709
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pharmaceutical intermediate
ReferenceSame Category
N-(2,6-Dimethylphenyl)-2-(ethyl(nitroso)amino)acetamide
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pharmaceutical intermediate
ReferenceSame Category
5-nitroimidazole
CAS3034-38-6
pharmaceutical intermediate
Referencestereoisomer of
(-)-norchlorcyclizine
CAS300543-56-0
pharmaceutical intermediate
Referencesame scaffold
Chlorcyclizine hydrochloride
CAS1620-21-9
pharmaceutical raw material
Safety Reference
Warning
H302Harmful if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
H361Suspected of damaging fertility or the unborn child
Customs Tariff Classification
The international HS code for 1-(4-Chlorobenzhydryl)piperazine (CAS 303-26-4) 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
1-[(4-chlorophenyl)-phenylmethyl]piperazine
InChIKey
UZKBSZSTDQSMDR-UHFFFAOYSA-N
SMILES
C1CN(CCN1)C(C2=CC=CC=C2)C3=CC=C(C=C3)Cl
Synonyms (34)
- CBHP
- Cetirizine EP Impurity A; Hydroxyzine EP Impurity A; Meclozine EP Impurity H
- Cetirizine EP impurity A
- Cetirizine impurity A, European Pharmacopoeia (EP)
- Meclozine impurity H, European Pharmacopoeia (EP)
- USP CBHP; 1-((4-chlorophenyl)(phenyl)methyl)piperazine
- (S)-Nor-CCZ
- 4-chlorobenzhydryl piperazine
- 98% +(contains <7%H2O)
- Cetirizine Impurity A
- Cetirizine impurity A CRS
- Meclozine impurity H CRS
- Norchlorcyclizine
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