Azure II - AR , CAS No.37247-10-2

CAS: 37247-10-2 Cat. No.: A100313 Molecular Weight: 625.68 EC Number: 609-371-9
AVAILABLE TO ORDER
GRADE & PURITY AR ? Analytical Reagent grade — high-purity chemicals meeting strict assay limits for lab analysis. Use when accuracy matters and trace impurities could skew results.
Synonyms
Azur II | Methylene Azure II | 3-Chloro-6-hydroxy-2-Pyridinecarboxylic acid
Storage
Desiccated,Room temperature
Shipped In
Normal
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Size
Status
Price
Qty
10g
A100313-10g
3

$25.90

$35.90
Save $10.00 (27.86%)
50g
A100313-50g
2

$85.90

$121.90
Save $36.00 (29.53%)
250g
A100313-250g
1

$285.90

$481.90
Save $196.00 (40.67%)
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Why this grade

AR AR for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

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Storage & shipping

Desiccated,Room temperature Ships Normal Check lot-specific COA for exact specifications.

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Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

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Literature proof

Cited in 0 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Overview

A heterotricyclic organic dye.

Specifications

Synonyms
Azur II | Methylene Azure II | 3-Chloro-6-hydroxy-2-Pyridinecarboxylic acid
Specifications & Purity
AR
Biochemical and Physiological Mechanisms
Azure II combined with methylene blue and basic fuchsin was used to stain semi thin sections. The complex is used for staining of nucleus, goblet cells, striated muscle, endothelial cells, smooth muscle, cytoplasm, lipid droplets, red blood cells, glycoge
Storage
Desiccated, Room temperature
Shipped In
Normal
Grade
AR
Names and Identifiers
Pubchem Sid488199316
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/488199316
Canonical SmilesCNC1=CC2=C(C=C1)N=C3C=CC(=[N+](C)C)C=C3S2.CN(C)C1=CC2=C(C=C1)N=C3C=CC(=[N+](C)C)C=C3S2.[Cl-].[Cl-]
IUPAC Name[7-(dimethylamino)phenothiazin-3-ylidene]-dimethylazanium;dimethyl-[7-(methylamino)phenothiazin-3-ylidene]azanium;dichloride
InChIKeyYOWZJZJLXUQHGF-UHFFFAOYSA-M
INCHI1S/C16H18N3S.C15H15N3S.2ClH/c1-18(2)11-5-7-13-15(9-11)20-16-10-12(19(3)4)6-8-14(16)17-13;1-16-10-4-6-12-14(8-10)19-15-9-11(18(2)3)5-7-13(15)17-12;;/h5-10H,1-4H3;4-9H,1-3H3;2*1H/q+1;;;/p-1
Isomeric SMILES CNC1=CC2=C(C=C1)N=C3C=CC(=[N+](C)C)C=C3S2.CN(C)C1=CC2=C(C=C1)N=C3C=CC(=[N+](C)C)C=C3S2.[Cl-].[Cl-]
WGK Germany 3
Molecular Weight 625.68
Reaxy-Rn 28060492
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=28060492&ln=

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

Download SDS →

✅ Certificate of Analysis (COA)

Lot-specific quality data. Enter your lot number to retrieve the exact COA.

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📊 Datasheet

Quick-reference summary of product specifications and applications.

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🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomOrganic compounds
SuperclassOrganoheterocyclic compounds
ClassBenzothiazines
SubclassNot available
Intermediate Tree Nodes Not available
Direct ParentBenzothiazines
Alternative Parents Dialkylarylamines  Secondary alkylarylamines  Benzenoids  Secondary ketimines  Heteroaromatic compounds  Azacyclic compounds  Organopnictogen compounds  Organic chloride salts  Hydrocarbon derivatives  
Molecular FrameworkNot available
Substituents Benzothiazine - Dialkylarylamine - Tertiary aliphatic/aromatic amine - Secondary aliphatic/aromatic amine - Benzenoid - Heteroaromatic compound - Secondary ketimine - Tertiary amine - Azacycle - Secondary amine - Organic nitrogen compound - Organopnictogen compound - Hydrocarbon derivative - Organic chloride salt - Organic salt - Organonitrogen compound - Amine - Aromatic heteropolycyclic compound
DescriptionThis compound belongs to the class of organic compounds known as benzothiazines. These are organic compounds containing a benzene fused to a thiazine ring (a six-membered ring with four carbon atoms, one nitrogen atom and one sulfur atom).
External Descriptors Not available
3D Structure
Interactive Chemical Structure Model





Certificates(CoA,COO,BSE/TSE and Analysis Chart)
C of A & Other Certificates(BSE/TSE, COO):
Analytical Chart:

Find and download the COA for your product by matching the lot number on the packaging.

16 results found

Lot NumberCertificate TypeDateItem
F2216051Certificate of AnalysisApr 08, 2026 A100313
F2216043Certificate of AnalysisMar 18, 2026 A100313
F2216044Certificate of AnalysisMar 18, 2026 A100313
B2228024Certificate of AnalysisDec 12, 2025 A100313
J2128388Certificate of AnalysisAug 11, 2025 A100313
J2128413Certificate of AnalysisAug 11, 2025 A100313
I2523105Certificate of AnalysisMay 21, 2025 A100313
I2523107Certificate of AnalysisMay 21, 2025 A100313
I2523109Certificate of AnalysisMay 21, 2025 A100313
E2327132Certificate of AnalysisApr 24, 2023 A100313
E2327135Certificate of AnalysisApr 24, 2023 A100313
E2327139Certificate of AnalysisApr 24, 2023 A100313
E2327140Certificate of AnalysisApr 24, 2023 A100313
E2327144Certificate of AnalysisApr 24, 2023 A100313
C23161307Certificate of AnalysisMay 25, 2022 A100313
C23161306Certificate of AnalysisSep 27, 2021 A100313

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Chemical and Physical Properties
SolubilitySoluble in water (40 mg/ml), and ethanol (20 mg/ml).
Melt Point(°C)185 °C
Molecular Weight625.700 g/mol
XLogP3
Hydrogen Bond Donor Count1
Hydrogen Bond Acceptor Count8
Rotatable Bond Count2
Exact Mass624.166 Da
Monoisotopic Mass624.166 Da
Topological Polar Surface Area96.600 Ų
Heavy Atom Count41
Formal Charge0
Complexity980.000
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
The total count of all stereochemical bonds0
Covalently-Bonded Unit Count4
Solution Calculators
Reviews

Customer Reviews

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