C12H15N
173.25 g/mol
Industrial ChemicalWarning
1,3,3-Trimethyl-2-methyleneindoline
CAS118-12-7EC204-235-1
Category
Industrial Chemical
Compound Class
Amine
Primary Use
Fischer base for dye synthesis
1,3,3-Trimethyl-2-methyleneindoline is a chemical compound used as a Fischer base in the synthesis of various dyes. It features a heterocyclic indoline core with an exocyclic methylene group.
Fischer base for dye synthesis
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
4-chlorophthalic anhydride
CAS118-45-6
Chemical intermediate for dyes and pigments
ReferenceSame Category
Isatoic anhydride
CAS118-48-9
intermediate for polymer curing agents
ReferenceSame Category
1,3-dichloro-5,5-dimethylhydantoin
CAS118-52-5
Disinfectant and chlorinating agent
ReferenceSame Category
Phenyl salicylate
CAS118-55-8
UV filter and polymer additive
Safety Reference
Warning
H302Harmful if swallowed
H315Causes skin irritation
H400Very toxic to aquatic life
H410Very toxic to aquatic life with long lasting effects
Customs Tariff Classification
The international HS code for 1,3,3-Trimethyl-2-methyleneindoline (CAS 118-12-7) 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
1,3,3-trimethyl-2-methylideneindole
InChIKey
ZTUKGBOUHWYFGC-UHFFFAOYSA-N
SMILES
CC1(C(=C)N(C2=CC=CC=C21)C)C
Synonyms (18)
- Fischer base
- Fischer's methylene base
- Fischers Base
- Indoline,3,3-trimethyl-
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