C6H4ClN3
153.57 g/mol
Pharmaceutical IntermediateWarning
5-Chlorobenzotriazole
CAS94-97-3EC202-378-4
Category
Pharmaceutical Intermediate
Compound Class
Heterocycle
Primary Use
Pharmaceutical Intermediate
5-Chlorobenzotriazole is a chemical compound used as an intermediate in the synthesis of peptide coupling reagents. It is structurally related to 6-chloro-1-hydroxybenzotriazole, a moiety known to enhance reaction rates in peptide synthesis.
Intermediate for peptide coupling reagent synthesisComponent in the preparation of amidinium coupling reagents such as HCTU
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
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Referencesame scaffold
5-tolyltriazole
CAS136-85-6
Corrosion inhibitor
Referencesame scaffold
Benzotriazole
CAS95-14-7
Anti-corrosion agent
Safety Reference
Warning
H302Harmful if swallowed
Customs Tariff Classification
The international HS code for 5-Chlorobenzotriazole (CAS 94-97-3) is 2933.99.
HS code (international, 6-digit)
2933.99
EU CN code (8-digit)
2933 99 80
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-chloro-2H-benzotriazole
InChIKey
PZBQVZFITSVHAW-UHFFFAOYSA-N
SMILES
C1=CC2=NNN=C2C=C1Cl
Synonyms (12)
- 1H-Benzotriazole, 5-chloro-
- 1H-Benzotriazole, 6-chloro-
- 5-Chloro-1H-benzotriazole
- 5-Chlorobenzotriazole
- 5-chloro-2H-benzotriazole
- 5Cl-BTR
- 6-Chloro-1H-benzotriazole
- 6-Chlorobenzotriazole
- BENZOTRIAZOLE, 5-CHLORO-
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