N-Nitroso Carbazole

Name: N-Nitroso Carbazole
Brand: Vaqora Chemicals
SKU: VQ-024823

About N-Nitroso Carbazole

N-Nitroso Carbazole (CAS 2788-23-0) is a nitrosamine impurity of Carvedilol offered by Vaqora Chemicals. The compound has the formula C12H8N2O, corresponding to a molecular weight of 196.2 g/mol. Systematically, it is named 9-nitrosocarbazole. It is also known as 9-Nitroso-9H-carbazole or 9H-Carbazole, 9-nitroso-.

It is supplied as a solid. Keep the vial tightly closed, protected from light and humidity, at the temperature stated on the Certificate of Analysis. Under GHS it is labelled “Danger”, so handle it with suitable PPE and consult the SDS.

It is used as a reference standard for trace-level detection and quantitation of nitrosamine impurities by LC-MS/MS or GC-MS, supporting nitrosamine risk assessments for Carvedilol, method validation (AMV) and regulatory filings. Our customers for this product work in pharmaceutical manufacturing and academic and industrial research.

Vaqora Chemicals supplies N-Nitroso Carbazole in 10 mg, 25 mg, 50 mg and 100 mg packs, each shipped with a Certificate of Analysis (COA), and exports worldwide.

Typical applications

Nitrosamine risk assessment
Trace LC-MS/MS quantitation
Method validation (AMV)
Regulatory submissions

Industries

Related to Carvedilol

View every impurity, metabolite and intermediate we list for Carvedilol.

Carvedilol impurities

Specifications & identifiers

Chemical identifiers
Product name	N-Nitroso Carbazole
Catalogue No.	VQ-024823
CAS Number	2788-23-0
IUPAC name	9-nitrosocarbazole
Molecular formula	C₁₂H₈N₂O
Molecular weight	196.2 g/mol
Exact mass	196.0637
Grade	Reference Standard
HSN code	38229090
InChIKey	XPKSVCWBMBPUPE-UHFFFAOYSA-N
SMILES	C1=CC=C2C(=C1)C3=CC=CC=C3N2N=O
PubChem CID	17743

Physical properties
Physical form	Solid
LogP (XLogP3)	3.1
H-bond donors / acceptors	0 / 2
TPSA	34.4 Å²
Synonyms	9-Nitroso-9H-carbazole, 9H-Carbazole, 9-nitroso-, 9Nitroso9Hcarbazole, Carbazole, 9nitroso, 9HCarbazole, 9nitroso, N-Nitrosocarbazol, 9-Nitroso-9H-carbazole #

Safety & hazard information (GHS)

Harmful / irritant

Health hazard

Signal word: Danger

Hazard statements

H302Harmful if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
H350May cause cancer

Precautionary statements: P203, P261, P264, P264 + P265, P270, P271, P280, P301 + P317, P302 + P352, P304 + P340, P305 + P351 + P338, P318, P319, P321, P330, P332 + P317, P337 + P317, P362 + P364, P403 + P233, P405, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of N-Nitroso Carbazole?

The CAS Registry Number of N-Nitroso Carbazole is 2788-23-0. It is also known as 9-Nitroso-9H-carbazole, 9H-Carbazole, 9-nitroso-, 9Nitroso9Hcarbazole.

What is the molecular formula and molecular weight of N-Nitroso Carbazole?

N-Nitroso Carbazole has the molecular formula C12H8N2O and a molecular weight of 196.2 g/mol. Its IUPAC name is 9-nitrosocarbazole.

What is N-Nitroso Carbazole used for?

N-Nitroso Carbazole is supplied as a characterised reference material related to Carvedilol. It is used for analytical method development and validation (AMV), impurity profiling, stability studies and quality control, and in ANDA/DMF regulatory filings.

Which grade and pack sizes of N-Nitroso Carbazole can I order?

We supply N-Nitroso Carbazole in Reference Standard grade, in 10 mg, 25 mg, 50 mg, 100 mg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with N-Nitroso Carbazole?

Yes. Every lot of N-Nitroso Carbazole is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can N-Nitroso Carbazole be shipped internationally?

Yes. N-Nitroso Carbazole is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.