C9H10N2O
162.19 g/mol
Pharmaceutical IntermediateDanger
2-Methyl-1-nitroso-2,3-dihydro-1H-indole
CAS85440-79-5EC287-218-1
Category
Pharmaceutical Intermediate
Compound Class
Amine
Primary Use
Pharmaceutical Intermediate
This compound is a nitrosamine impurity reference standard used in pharmaceutical quality control. It is a chemical compound characterized by a dihydroindole core with a nitroso functional group, employed primarily for analytical testing and regulatory compliance in drug manufacturing.
Nitrosamine impurity reference standard for analytical testingQuality control standard in pharmaceutical manufacturing
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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Referencesame scaffold
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Referencesame scaffold
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Safety Reference
Danger
H301Toxic if swallowed
H302Harmful if swallowed
H312Harmful in contact with skin
H332Harmful if inhaled
Customs Tariff Classification
The international HS code for 2-Methyl-1-nitroso-2,3-dihydro-1H-indole (CAS 85440-79-5) 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
2-methyl-1-nitroso-2,3-dihydroindole
InChIKey
KBCZSFIDYXEMTH-UHFFFAOYSA-N
SMILES
CC1CC2=CC=CC=C2N1N=O
Synonyms (17)
- (2RS)-2-Methyl-1-nitroso-2,3-dihydro-1H-indole; Indapamide Imp. A (EP); Indapamide Related Compound D; Indapamide Impurity A
- Indapamide EP Impurity A
- Indapamide EP Impurity A (Mixture of Diastereomers)
- 1-nitroso-2-methylindoline
- INDAPAMIDE IMPURITY A
- Methylnitrosoindoline
- Methylnitrosoindoline CRS
- N-Nitroso 2-methyl indoline
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