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Pharmacopeial Impurities (EP / USP / BP)

Clonazepam EP Impurity B

Reference StandardAvailable on request

Order Clonazepam EP Impurity B (CAS 55198-89-5) online at Zemixal: C15H10ClN3O3, COA and SDS with every lot, worldwide shipping.

Pack sizes
Clonazepam EP Impurity B chemical structure
CAS number55198-89-5
FormulaC15H10ClN3O3
Molar mass315.71 g/mol
Physical formSolid
HS code38229090
InChIKeyGYAWOVGCEQLWHW-UHFFFAOYSA-N
IUPAC name3-amino-4-(2-chlorophenyl)-6-nitro-1H-quinolin-2-one

About Clonazepam EP Impurity B

Clonazepam EP Impurity B belongs to the Clonazepam reference-standard family in the Zemixal catalogue. Key data (Reference Standard): CAS 55198-89-5, formula C15H10ClN3O3 and molar mass 315.71 g/mol. It is handled as a solid.

Typical applications

  • Pharmacopeial method verification
  • Impurity profiling
  • QC release testing
  • ANDA / DMF filings

Storage and safety notes

Hazard communication follows GHS (Warning: H302, H336, H361 and H412). Our SDS lists exposure controls and first-aid measures.

Order it in 10 mg, 25 mg, 50 mg and 100 mg packs or ask for a bulk quotation. Every shipment includes a certificate of analysis with characterisation data. Send an enquiry through the quote panel and you get a formal offer with Incoterms and delivery time.

Reference standards for Clonazepam

See every impurity, metabolite and related compound we list for this API.

Clonazepam standards

Typical uses

  • Pharmacopeial method verification
  • Impurity profiling
  • QC release testing
  • ANDA / DMF filings

Applications

Pharmaceutical Manufacturing and QCResearch Labs and Universities

Grade guides

Ph. Eur. Grade (European Pharmacopoeia)

Specifications and identifiers

Specifications of Clonazepam EP Impurity B
Product nameClonazepam EP Impurity B
Catalogue numberZX-028683
CAS number55198-89-5
IUPAC name3-amino-4-(2-chlorophenyl)-6-nitro-1H-quinolin-2-one
Molecular formulaC15H10ClN3O3
Molar mass315.71 g/mol
Exact mass315.0411
GradeReference Standard
Physical formSolid
XLogP32.5
H-bond donors / acceptors2 / 4
Topological polar surface area101 Ų
HS code38229090
InChIKeyGYAWOVGCEQLWHW-UHFFFAOYSA-N
SMILESC1=CC=C(C(=C1)C2=C(C(=O)NC3=C2C=C(C=C3)[N+](=O)[O-])N)Cl
PubChem CID35396728
SynonymsClonazepam Related Compound A, Clonazepam - Impurity B, 3-Amino-4-(2-chlorophenyl)-6-nitro-2(1H)-quinolinone, 3-Amino-4-(2-chlorophenyl)-6-nitrocarbostyril, 2(1H)-Quinolinone, 3-amino-4-(2-chlorophenyl)-6-nitro-, 3-amino-4-ClPhNCS, 3-Amino-4-(2-chlorophenyl)-6-nitroquinolin-2(1H)-one, 3-Amino-4-(2-chlorophenyl)-6-nitro-2(1H)-quinolinone(Clonazepam Impurity), 3-Amino-4-(2-chlorophenyl)-6-nitroquinolin-2-ol, Clonazepam Related Impurity A, 3-amino-4-(2-chlorophenyl)-6-nitro-1,2-dihydroquinolin-2-one, 3-AMino-4-(2-chlorophenyl)-6-nitro-2(1H)-quinolinone (ClonazepaM IMpurity)

Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.

Safety and GHS hazards

GHS07 Irritant or harmful
Irritant or harmful
GHS08 Health hazard
Health hazard

Signal word 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

Precautionary statements P203, P261, P264, P270, P271, P273, P280, P301 + P317, P304 + P340, P318, P319, P330, P403 + P233, P405, P501

Classification summarised from public GHS notifications. It can vary with grade and concentration, so always follow the SDS supplied with your lot.

Pack sizes

Pack sizes of Clonazepam EP Impurity B
10 mgQuoted on request
25 mgQuoted on request
50 mgQuoted on request
100 mgQuoted on request

Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.

Questions about Clonazepam EP Impurity B

Which CAS number identifies Clonazepam EP Impurity B?
Clonazepam EP Impurity B is registered under CAS 55198-89-5. You may also see it listed as Clonazepam Related Compound A, Clonazepam - Impurity B, 3-Amino-4-(2-chlorophenyl)-6-nitro-2(1H)-quinolinone. Our catalogue number for this item is ZX-028683.
What are the formula and molar mass of Clonazepam EP Impurity B?
For Clonazepam EP Impurity B, its formula is C15H10ClN3O3 and its molar mass is 315.71 g/mol. The systematic (IUPAC) name is 3-amino-4-(2-chlorophenyl)-6-nitro-1H-quinolin-2-one. InChIKey GYAWOVGCEQLWHW-UHFFFAOYSA-N lets you match it in any structure database.
How is Clonazepam EP Impurity B used in pharmaceutical QC?
Clonazepam EP Impurity B is a characterised reference material linked to Clonazepam. Laboratories use it to identify and quantify this impurity during method development and validation, stability work, batch release testing and regulatory submissions.
What grade and pack sizes are available for Clonazepam EP Impurity B?
This listing is Reference Standard grade. Standard packs are 10 mg, 25 mg, 50 mg, 100 mg. Larger quantities and custom packing can be quoted on request.
Which documents come with Clonazepam EP Impurity B?
Each lot ships with a batch certificate of analysis and a 16-section GHS safety data sheet. A typical COA or specification sheet can be shared with the quotation before you order.
Can Zemixal ship Clonazepam EP Impurity B to my country?
Yes. Because Clonazepam EP Impurity B is classed as hazardous, it travels in UN-approved packaging as dangerous goods under IATA or IMDG rules, with the export paperwork your broker needs.

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