Toluidine bule - Biological stain , CAS No.6586-04-5

CAS: 6586-04-5 Cat. No.: T104232 Formula: C15H16ClN3S·0.5ZnCl2 Molecular Weight: 373.97 Beilstein Registry Number: 4068052 PubChem CID: 11456928
AVAILABLE TO ORDER
GRADE & PURITY Biological Stain ? Biological stain grade — dyes characterized for staining cells and tissues. Use in histology and microscopy where staining consistency matters.
Synonyms
(7-amino-8-methylphenothiazin-3-ylidene)-dimethylazanium;dichlorozinc;dichloride | DTXSID00466405 | SBB058282 | Toluidine Blue, for microscopy (Hist., Vit.) | AKOS024375442
Storage
Desiccated,Room temperature
Shipped In
Normal
★
Size
USA
Germany (EU)*
Price
Qty
1g
T104232-1g
3 In stock
—
$9.90
5g
T104232-5g
8 In stock
—
$23.90
25g
T104232-25g
3 In stock
—
$81.90
100g
T104232-100g
6 In stock
—
$207.90
500g
T104232-500g
Made to order · 8–12 wks
$999.90
Enter a quantity for the sizes you want to add.
🧪
Why this grade

Biological stain Biological Stain for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

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

📋

Quality documents

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

📚

Literature proof

Cited in 15 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Overview

Toluidine Blue is a basic thiazine metachromatic dye, which is used for selectively staining acidic tissue components such as carboxylates, sulfates, and phosphate radicals. It is found to have affinity for nucleic acids, and therefore binds to nuclear material of tissues with a high DNA and RNA content

Application:

Toluidine Blue is suitable for use in the following applications:
to demonstrate amyloid; DNA in plant material, mast cells, Nissl substance, nuclei, and sulfatides
in metachromatic staining of sulfated mucins and related materials
as staining agent to identify the development and accumulation of the cartilage matrix, proteoglycans for isolation and culture of mesenchymal stem cells from mouse compact bone.
staining of mucins in water-miscible resins and of nucleic acids in epoxy resins(1)

Specifications

Synonyms
(7-amino-8-methylphenothiazin-3-ylidene)-dimethylazanium;dichlorozinc;dichloride | DTXSID00466405 | SBB058282 | Toluidine Blue, for microscopy (Hist., Vit.) | AKOS024375442
Specifications & Purity
Biological stain
Biochemical and Physiological Mechanisms
Toluidine Blue is a basic thiazine metachromatic dye, which is used for selectively staining acidic tissue components such as carboxylates, sulfates, and phosphate radicals.It is found to have an affinity for nucleic acids and therefore binds to the nucle
Storage
Desiccated,Room temperature
Shipped In
Normal
Grade
Biological Stain
Names and Identifiers
Pubchem Sid
Pubchem Sid Url
https://pubchem.ncbi.nlm.nih.gov/substance/488197521
Canonical Smiles
CC1=CC2=C(C=C1N)SC3=CC(=[N+](C)C)C=CC3=N2.CC1=CC2=C(C=C1N)SC3=CC(=[N+](C)C)C=CC3=N2.[Cl-].[Cl-].Cl[Zn]Cl
IUPAC Name
(7-amino-8-methylphenothiazin-3-ylidene)-dimethylazanium;dichlorozinc;dichloride
InChIKey
DAQXTSXITPUGRG-UHFFFAOYSA-L
INCHI
1S/2C15H15N3S.4ClH.Zn/c2*1-9-6-13-15(8-11(9)16)19-14-7-10(18(2)3)4-5-12(14)17-13;;;;;/h2*4-8,16H,1-3H3;4*1H;/q;;;;;;+2/p-2
Isomeric SMILES
CC1=CC2=C(C=C1N)SC3=CC(=[N+](C)C)C=CC3=N2.CC1=CC2=C(C=C1N)SC3=CC(=[N+](C)C)C=CC3=N2.[Cl-].[Cl-].Cl[Zn]Cl
WGK Germany
3
PubChem CID
11456928
Molecular Weight
373.97
Beilstein
4068052

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.

Look up COA →

📊 Datasheet

Quick-reference summary of product specifications and applications.

View datasheet →

🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

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.

39 results found

Lot NumberCertificate TypeDateItem
B2314069Certificate of AnalysisJul 30, 2026 T104232
B2314083Certificate of AnalysisJul 30, 2026 T104232
B2314080Certificate of AnalysisJul 30, 2026 T104232
F2605497Certificate of AnalysisMay 27, 2026 T104232
F2605478Certificate of AnalysisMay 27, 2026 T104232
F2605477Certificate of AnalysisMay 27, 2026 T104232
F2605476Certificate of AnalysisMay 27, 2026 T104232
F2605475Certificate of AnalysisMay 27, 2026 T104232
D2602034Certificate of AnalysisApr 15, 2026 T104232
F2225593Certificate of AnalysisDec 10, 2025 T104232
G2509252Certificate of AnalysisJun 25, 2025 T104232
A2629061Certificate of AnalysisJun 25, 2025 T104232
G2509251Certificate of AnalysisJun 25, 2025 T104232
G2509250Certificate of AnalysisJun 25, 2025 T104232
L2424351Certificate of AnalysisDec 04, 2024 T104232
L2424350Certificate of AnalysisDec 04, 2024 T104232
C2511157Certificate of AnalysisDec 04, 2024 T104232
F2419334Certificate of AnalysisJun 05, 2024 T104232
F2419335Certificate of AnalysisJun 05, 2024 T104232
A2405267Certificate of AnalysisDec 15, 2023 T104232
A2405268Certificate of AnalysisDec 15, 2023 T104232
A2405269Certificate of AnalysisDec 15, 2023 T104232
E2409028Certificate of AnalysisDec 15, 2023 T104232
H2106647Certificate of AnalysisMay 10, 2023 T104232
K2328094Certificate of AnalysisNov 03, 2022 T104232
L2212373Certificate of AnalysisNov 03, 2022 T104232
L2212372Certificate of AnalysisNov 03, 2022 T104232
L2212371Certificate of AnalysisNov 03, 2022 T104232
L2212370Certificate of AnalysisNov 03, 2022 T104232
L2212368Certificate of AnalysisNov 03, 2022 T104232
L2212367Certificate of AnalysisNov 03, 2022 T104232
I2216624Certificate of AnalysisAug 19, 2022 T104232
I2216602Certificate of AnalysisAug 19, 2022 T104232
I2216601Certificate of AnalysisAug 19, 2022 T104232
I2216600Certificate of AnalysisAug 19, 2022 T104232
H2301095Certificate of AnalysisAug 19, 2022 T104232
H2301088Certificate of AnalysisAug 19, 2022 T104232
F2225546Certificate of AnalysisMay 28, 2022 T104232
F2225592Certificate of AnalysisMay 28, 2022 T104232
Chemical and Physical Properties
SolubilitySolubility: Soluble in water
Documents & Articles
Citations of This Product
Solution Calculators
Reviews

Customer Reviews

Frequently Asked Questions

What does Biological Stain mean?
Biological Stain indicates that the product has been processed and tested for biological and biochemical applications. Specifications may include endotoxin limits, microbial controls, sterility, low DNase/RNase/protease activity, and verified biological activity where relevant.
How should this product be stored?
Store at room temperature, desiccated. Keep the container tightly closed with desiccant — the material is moisture-sensitive.
How is this product shipped?
This product ships under standard ambient conditions. No temperature-controlled packaging is required.
What are the CAS number, molecular formula and molecular weight?
The CAS Number is 6586-04-5, the molecular formula is C15H16ClN3S·0.5ZnCl2, and the molecular weight is 373.97 g/mol. InChIKey DAQXTSXITPUGRG-UHFFFAOYSA-L.
What documentation is provided?
Available product documentation, including Certificates of Analysis (COA), Safety Data Sheets (SDS), and specification sheets, is shown in the product document area. Document availability and access follow the current site policy.

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