C2H2ClN3
103.51 g/mol
Pharmaceutical IntermediateWarning
3-Chloro-1H-1,2,4-triazole
CAS6818-99-1EC229-892-1
Category
Pharmaceutical Intermediate
Compound Class
Heterocycle
Primary Use
Pharmaceutical Intermediate
3-Chloro-1H-1,2,4-triazole is a halogenated triazole compound used as a pharmaceutical intermediate. Its structure and properties have been characterized in both solid state and solution.
Pharmaceutical intermediate for triazole synthesisBuilding block in medicinal chemistry research
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
ReferenceSame Category
3-Amino-3-(4-methylphenyl)propionic acid
CAS68208-18-4
pharmaceutical intermediate
ReferenceSame Category
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CAS68310-01-0
pharmaceutical intermediate
ReferenceSame Category
(1S,2S)-trans-2-Aminocyclopentanol hydrochloride
CAS68327-04-8
pharmaceutical intermediate
ReferenceSame Category
Trans-2-Aminocyclopentanol hydrochloride
CAS68327-11-7
pharmaceutical intermediate
Referencesame scaffold
Triazolealanine
CAS10109-05-4
research compound
Referencesame scaffold
3-(Chloromethyl)-1-methyl-1H-1,2,4-triazole hydrochloride
CAS135206-76-7
pharmaceutical intermediate
Referencesame scaffold
(1-Methyl-1H-1,2,4-triazol-3-yl)methanol
CAS135242-93-2
pharmaceutical intermediate
Referencesame scaffold
1-(1H-1,2,4-triazol-1-yl)ethan-1-one
CAS15625-88-4
pharmaceutical intermediate
Safety Reference
Warning
H302Harmful if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
Customs Tariff Classification
The international HS code for 3-Chloro-1H-1,2,4-triazole (CAS 6818-99-1) 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-1H-1,2,4-triazole
InChIKey
QGOUKZPSCTVYLX-UHFFFAOYSA-N
SMILES
C1=NNC(=N1)Cl
Synonyms (14)
- 1H-1,2,4-Triazole, 3-chloro-
- 1H-1,2,4-Triazole, 5-chloro-
- 1H-1,4-Triazole, 3-chloro-
- 3-Chloro-1,2,4-triazole
- 3-Chloro-1H-1,2,4-triazole
- 3-Chloro-1H-1,4-triazole
- 3-Chloro-4H-1,2,4-triazole
- 3-Chloro-s-triazole
- 5-chloro-1,2,4-triazole
- 5-chloro-1H-1,2,4-triazole
- s-Triazole, 3-chloro-
- s-Triazole, 3-chloro-(VAN)
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