C15H10ClN3O3
315.71 g/mol
Pharmaceutical IntermediateWarning
3-Amino-4-(2-chlorophenyl)-6-nitro-2(1H)-quinolinone
CAS55198-89-5EC642-315-1
Category
Pharmaceutical Intermediate
Compound Class
Heterocycle
Primary Use
Pharmaceutical Intermediate
This compound is a quinoline derivative used as a pharmaceutical impurity reference standard. It is primarily employed in quality control and analytical testing to identify and quantify related impurities in drug substances.
pharmaceutical impurity reference standardanalytical testing for drug quality control
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
StrongSame Parent
3-Amino-4-(2-chlorophenyl)-6-nitro-2(1H)-quinolinone
CAS1346604-43-0
pharmaceutical intermediate
ReferenceSame Category
(±)-tropic acid
CAS552-63-6
pharmaceutical intermediate
ReferenceSame Category
5-methyl-2-pyrazinecarboxylic acid
CAS5521-55-1
pharmaceutical intermediate
ReferenceSame Category
A-674563
CAS552325-73-2
pharmaceutical intermediate
ReferenceSame Category
3-Methyl-7-propylxanthine
CAS55242-64-3
pharmaceutical intermediate
Referencesame scaffold
3-Amino-6-nitro-4-phenyl-1H-quinolin-2-one
CAS36020-93-6
research compound
Referencesame scaffold
STK380592
CAS5220-83-7
pharmaceutical intermediate
Referencesame scaffold
3-Amino-4-(2-fluorophenyl)-1-methyl-6-nitroquinolin-2(1H)-one
CAS2512213-47-5
pharmaceutical intermediate
Safety Reference
Warning
H302Harmful if swallowed
H336May cause drowsiness or dizziness
H361Suspected of damaging fertility or the unborn child
H412Harmful to aquatic life with long lasting effects
Customs Tariff Classification
The international HS code for 3-Amino-4-(2-chlorophenyl)-6-nitro-2(1H)-quinolinone (CAS 55198-89-5) is 2933.79.
HS code (international, 6-digit)
2933.79
EU CN code (8-digit)
2933 79 00
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
3-amino-4-(2-chlorophenyl)-6-nitro-1H-quinolin-2-one
InChIKey
GYAWOVGCEQLWHW-UHFFFAOYSA-N
SMILES
C1=CC=C(C(=C1)C2=C(C(=O)NC3=C2C=C(C=C3)[N+](=O)[O-])N)Cl
Synonyms (15)
- Clonazepam EP Impurity B
- Clonazepam Imp. B (EP); Clonazepam USP Related Compound A; Clonazepam USP RC A; 3-Amino-4-(2-chlorophenyl)-6-nitroquinolin-2(1H)-one; Clonazepam Related Compound A; Clonazepam Impurity B
- Clonazepam impurity B, European Pharmacopoeia (EP)
- 3-amino-4-ClPhNCS
- CLONAZEPAM IMPURITY B
- Clonazepam impurity B CRS
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