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VAQORACHEMICALS
Stains, Fluorescent Dyes & Histology ReagentsMicroscopyAvailable on request

Azur B

Synonyms: N,N-Dimethyl-7-(methylamino)-3H-phenothiazin-3-iminium chloride · Azure B · Azure I · Methylene azure B

CAS No.531-55-5
FormulaC15H16ClN3S
Mol. weight305.80
Catalogue No.VQ-000484
PurityMicroscopy
HSN32049000

Azur B (CAS 531-55-5) – biological stain, Microscopy grade. C15H16ClN3S, MW 305.8. Buy from Vaqora Chemicals with COA and worldwide shipping.

Pack sizesPrice on quotation · bulk available
1 g
5 g
25 g
5 x 1 kg
25 kg
Bulk / custom pack · kg to MT
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Batch COA with every lot
16-section GHS SDS
Export to 120+ countries
DG-compliant packing

About Azur B

Azur B is a biological stain in Microscopy grade carrying the CAS registry number 531-55-5. The compound has the formula C15H16ClN3S, corresponding to a molecular weight of 305.8 g/mol. The IUPAC name is dimethyl-[7-(methylamino)phenothiazin-3-ylidene]azanium chloride. Alternative names: Azure B and Azure I.

The product is provided as a powder. Reported physical data include a melting point of 205-210 °C. Store in a tightly closed container in a cool, dry and well-ventilated place. Handle it with standard laboratory precautions and appropriate personal protective equipment.

Typical applications include histology and cytology staining, microscopy, clinical laboratories and biological staining. Buyers come mainly from academic and industrial research, diagnostics and biotechnology and textiles and dyeing.

Vaqora Chemicals supplies Azur B in 1 g, 5 g, 25 g and 5 x 1 kg packs, each shipped with a Certificate of Analysis (COA), and exports worldwide.

Typical applications

  • Histology & cytology staining
  • Microscopy
  • Clinical laboratories
  • Biological staining

Industries

Specifications & identifiers

Chemical identifiers
Product nameAzur B
Catalogue No.VQ-000484
CAS Number531-55-5
IUPAC namedimethyl-[7-(methylamino)phenothiazin-3-ylidene]azanium chloride
Molecular formulaC15H16ClN3S
Molecular weight305.8 g/mol
Exact mass305.0753
GradeMicroscopy
HSN code32049000
InChIKeyDNDJEIWCTMMZBX-UHFFFAOYSA-N
SMILESCNC1=CC2=C(C=C1)N=C3C=CC(=[N+](C)C)C=C3S2.[Cl-]
PubChem CID68275
Physical properties
Physical formPowder
AppearancePowder
Melting point205-210 °C
H-bond donors / acceptors1 / 4
TPSA52.7 Ų
SynonymsN,N-Dimethyl-7-(methylamino)-3H-phenothiazin-3-iminium chloride, Azure B, Azure I, Methylene azure B, 3-(Dimethylamino)-7-(methylamino)phenothiazin-5-ium chloride, Trimethylthionine chloride, AZUR I, Azure B (chloride), 3-(Dimethylamino)-7-(methylamino)-phenothiazin-5-ium chloride, 3-(Dimethylamino)-7-(methylimino)-3H-phenothiazine hydrochloride, 3-Methylamino-7-dimethylaminophenzathonium chloride, Phenothiazin-5-ium, 3-(dimethylamino)-7-(methylamino)-, chloride

Documents

Frequently asked questions

What is the CAS number of Azur B?

The CAS Registry Number of Azur B is 531-55-5. It is also known as N,N-Dimethyl-7-(methylamino)-3H-phenothiazin-3-iminium chloride, Azure B, Azure I.

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

Azur B has the molecular formula C15H16ClN3S and a molecular weight of 305.8 g/mol. Its IUPAC name is dimethyl-[7-(methylamino)phenothiazin-3-ylidene]azanium chloride.

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

We supply Azur B in Microscopy grade, in 1 g, 5 g, 25 g, 5 x 1 kg, 25 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Azur B?

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

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

Enquire about Azur B

We reply within one business day with price, pack options, lead time and documentation.

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Why buyers choose Vaqora

  • Batch-traceable lots with COA
  • R&D packs to multi-tonne supply
  • IATA / IMDG dangerous-goods packing
  • EXW, FOB, CIF, DAP Incoterms
  • Custom synthesis & sourcing
How ordering works

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