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Home/Compounds/Pharmaceutical Intermediate/5-Chloro-2,3,3-trimethyl-3H-indole
C11H12ClN
193.67 g/mol
Pharmaceutical IntermediateWarning

5-Chloro-2,3,3-trimethyl-3H-indole

CAS25981-83-3EC247-387-4
Category
Pharmaceutical Intermediate
Compound Class
Heterocycle
Primary Use
Pharmaceutical Intermediate

5-Chloro-2,3,3-trimethyl-3H-indole is a chlorinated indole derivative used as a pharmaceutical intermediate in the synthesis of active pharmaceutical ingredients.

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

ReferenceSame Category

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CAS259860-08-7

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ReferenceSame Category

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pharmaceutical intermediate

ReferenceSame Category

Methyl (triphenylphosphoranylidene)acetate

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pharmaceutical intermediate

Referencesame scaffold

Sodium 2,3,3-trimethyl-3H-indole-5-sulfonate

CAS287188-58-3

pharmaceutical intermediate

Referencesame scaffold

Potassium 2,3,3-trimethyl-3H-indole-5-sulfonate

CAS184351-56-2

research compound

Referencesame scaffold

2,3,3-Trimethylindolenine

CAS1640-39-7

pharmaceutical intermediate

Safety Reference

Harmful
Harmful
Warning
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Customs Tariff Classification

The international HS code for 5-Chloro-2,3,3-trimethyl-3H-indole (CAS 25981-83-3) 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-2,3,3-trimethylindole

InChIKey

GSKATGIMEUGNJN-UHFFFAOYSA-N

SMILES

CC1=NC2=C(C1(C)C)C=C(C=C2)Cl

Synonyms (6)

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