Pyronin B

Name: Pyronin B
Brand: Vaqora Chemicals
SKU: VQ-000692

About Pyronin B

Pyronin B is a biological stain (Microscopy grade) carrying the CAS registry number 2150-48-3. With the molecular formula C21H27ClN2O, it has a molar mass of 358.9 g/mol. Its systematic (IUPAC) name is [6-(diethylamino)xanthen-3-ylidene]-diethylazanium chloride. It is also known as 3,6-Bis(diethylamino)xanthylium chloride or Pyronine B(By).

The material typically appears as a dark green powder. Key physical data: a melting point of 174-176 °C. Store sealed in a dry, well-ventilated location away from incompatible materials. Good laboratory practice and suitable PPE are recommended during handling.

Key uses span histology and cytology staining, microscopy and clinical laboratories. It is used across academic and industrial research, diagnostics and biotechnology and textiles and dyeing.

We offer Pyronin B in 5 g, 100 g and 1 kg packs with a batch-specific COA, and ship to customers worldwide.

Typical applications

Histology & cytology staining
Microscopy
Clinical laboratories

Industries

Specifications & identifiers

Chemical identifiers
Product name	Pyronin B
Catalogue No.	VQ-000692
CAS Number	2150-48-3
IUPAC name	[6-(diethylamino)xanthen-3-ylidene]-diethylazanium chloride
Molecular formula	C₂₁H₂₇ClN₂O
Molecular weight	358.9 g/mol
Exact mass	358.1812
Grade	Microscopy
HSN code	32049000
InChIKey	CXZRDVVUVDYSCQ-UHFFFAOYSA-M
SMILES	CCN(CC)C1=CC2=C(C=C1)C=C3C=CC(=[N+](CC)CC)C=C3O2.[Cl-]
PubChem CID	16524

Physical properties
Physical form	Powder
Appearance	Dark green powder
Melting point	174-176 °C
H-bond donors / acceptors	0 / 3
TPSA	15.5 Å²
Synonyms	3,6-Bis(diethylamino)xanthylium chloride, Pyronine B(By), Pyronine B, purified, (6-(Diethylamino)-3H-xanthen-3-ylidine)diethylammonium chloride, N-(6-(Diethylamino)-3H-xanthen-3-ylidine)-N-ethylethanaminium chloride, Xanthylium, 3,6-bis(diethylamino)-, chloride, Pyronin B Certified, E tetraethylpyronin, C21H27ClN2O, CI 451, 3,6-Bis(diethylamino)xanthen-10-ium chloride

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 Pyronin B?

The CAS Registry Number of Pyronin B is 2150-48-3. It is also known as 3,6-Bis(diethylamino)xanthylium chloride, Pyronine B(By), Pyronine B, purified.

What is the molecular formula and molecular weight of Pyronin B?

Pyronin B has the molecular formula C21H27ClN2O and a molecular weight of 358.9 g/mol. Its IUPAC name is [6-(diethylamino)xanthen-3-ylidene]-diethylazanium chloride.

Which grade and pack sizes of Pyronin B can I order?

We supply Pyronin B in Microscopy grade, in 5 g, 100 g, 1 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Pyronin B?

Yes. Every lot of Pyronin B 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 Pyronin B be shipped internationally?

Yes. We export Pyronin B worldwide by air and sea freight or express courier, on EXW, FOB, CIF, CFR or DAP Incoterms, with full export documentation.