Aniline Blue, sodium salt - Biological stain , CAS No.28631-66-5

CAS: 28631-66-5 Cat. No.: A111200 Molecular Weight: 737.72 EC Number: 249-113-9
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
C.I. Acid Blue 22 | sodium 2-amino-3-methyl-5-((E)-((E)-4-(4-sulfonatophenylimino)cyclohexa-2,5-dienylidene)(4-(4-sulfophenylamino)phenyl)methyl)benzenesulfonate | disodium;2-amino-3-methyl-5-[[4-(4-sulfonatoanilino)phenyl]-[4-(4-sulfophenyl)iminocyclohex
Storage
Room temperature
Shipped In
Normal
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
5g
A111200-5g
1

$17.90

$27.90
Save $10.00 (35.84%)
25g
A111200-25g
2

$71.90

$89.90
Save $18.00 (20.02%)
100g
A111200-100g
2
$259.90
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Why this grade

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

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Storage & shipping

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 16 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Overview

Aniline blue is used to stain collagen fibers in tissue sections using the Masson′s trichrome protocol for staining multiple components. Collagen is stained blue by this method.

Specifications

Synonyms
C.I. Acid Blue 22 | sodium 2-amino-3-methyl-5-((E)-((E)-4-(4-sulfonatophenylimino)cyclohexa-2, 5-dienylidene)(4-(4-sulfophenylamino)phenyl)methyl)benzenesulfonate | disodium;2-amino-3-methyl-5-[[4-(4-sulfonatoanilino)phenyl]-[4-(4-sulfophenyl)iminocyclohex
Specifications & Purity
Biological stain
Storage
Room temperature
Shipped In
Normal
Grade
Biological Stain
Names and Identifiers
Pubchem Sid488203006
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/488203006
Canonical SmilesCC1=CC(=CC(=C1N)S(=O)(=O)[O-])C(=C2C=CC(=NC3=CC=C(C=C3)S(=O)(=O)O)C=C2)C4=CC=C(C=C4)NC5=CC=C(C=C5)S(=O)(=O)[O-].[Na+].[Na+]
IUPAC Namedisodium;2-amino-3-methyl-5-[[4-(4-sulfonatoanilino)phenyl]-[4-(4-sulfophenyl)iminocyclohexa-2,5-dien-1-ylidene]methyl]benzenesulfonate
InChIKeyXOSXWYQMOYSSKB-UHFFFAOYSA-L
INCHI1S/C32H27N3O9S3.2Na/c1-20-18-23(19-30(32(20)33)47(42,43)44)31(21-2-6-24(7-3-21)34-26-10-14-28(15-11-26)45(36,37)38)22-4-8-25(9-5-22)35-27-12-16-29(17-13-27)46(39,40)41;;/h2-19,34H,33H2,1H3,(H,36,37,38)(H,39,40,41)(H,42,43,44);;/q;2*+1/p-2
Isomeric SMILES CC1=CC(=CC(=C1N)S(=O)(=O)[O-])C(=C2C=CC(=NC3=CC=C(C=C3)S(=O)(=O)O)C=C2)C4=CC=C(C=C4)NC5=CC=C(C=C5)S(=O)(=O)[O-].[Na+].[Na+]
Alternate CAS 8004-91-9
Molecular Weight 737.72
Reaxy-Rn 60338171
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=60338171&ln=

Documentation

📋 Safety Data Sheet (SDS)

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

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✅ 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.

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Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomOrganic compounds
SuperclassBenzenoids
ClassBenzene and substituted derivatives
SubclassDiphenylmethanes
Intermediate Tree Nodes Not available
Direct ParentDiphenylmethanes
Alternative Parents Benzenesulfonic acids and derivatives  Benzenesulfonyl compounds  1-sulfo,2-unsubstituted aromatic compounds  Aniline and substituted anilines  Aminotoluenes  Sulfonyls  Secondary ketimines  Organosulfonic acids  Azomethines  Secondary amines  Propargyl-type 1,3-dipolar organic compounds  Primary amines  Organopnictogen compounds  Organic sodium salts  Organic oxides  Hydrocarbon derivatives  
Molecular FrameworkAromatic homomonocyclic compounds
Substituents Diphenylmethane - Benzenesulfonate - Benzenesulfonyl group - 1-sulfo,2-unsubstituted aromatic compound - Arylsulfonic acid or derivatives - Aminotoluene - Aniline or substituted anilines - Toluene - Sulfonyl - Organosulfonic acid - Organosulfonic acid or derivatives - Organic sulfonic acid or derivatives - Secondary ketimine - Azomethine - Ketimine - Organic alkali metal salt - Organic 1,3-dipolar compound - Propargyl-type 1,3-dipolar organic compound - Secondary amine - Organic nitrogen compound - Organic oxygen compound - Organopnictogen compound - Organic oxide - Hydrocarbon derivative - Organic sodium salt - Organic salt - Primary amine - Organosulfur compound - Organonitrogen compound - Imine - Amine - Aromatic homomonocyclic compound
DescriptionThis compound belongs to the class of organic compounds known as diphenylmethanes. These are compounds containing a diphenylmethane moiety, which consists of a methane wherein two hydrogen atoms are replaced by two phenyl groups.
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.

19 results found

Lot NumberCertificate TypeDateItem
I2511230Certificate of AnalysisJul 23, 2025 A111200
I2511214Certificate of AnalysisJul 23, 2025 A111200
I2511226Certificate of AnalysisJul 23, 2025 A111200
A2614081Certificate of AnalysisJul 09, 2025 A111200
G2516381Certificate of AnalysisJul 09, 2025 A111200
G2516441Certificate of AnalysisJul 09, 2025 A111200
G2516442Certificate of AnalysisJul 09, 2025 A111200
G2516448Certificate of AnalysisJul 09, 2025 A111200
A2508201Certificate of AnalysisJun 17, 2024 A111200
A2408068Certificate of AnalysisDec 08, 2023 A111200
B2420015Certificate of AnalysisAug 03, 2023 A111200
H2330069Certificate of AnalysisAug 03, 2023 A111200
H2330202Certificate of AnalysisAug 03, 2023 A111200
L2203032Certificate of AnalysisOct 22, 2022 A111200
L2203012Certificate of AnalysisOct 22, 2022 A111200
B2315115Certificate of AnalysisOct 22, 2022 A111200
J2210266Certificate of AnalysisOct 17, 2022 A111200
H2217169Certificate of AnalysisJul 16, 2022 A111200
H2217168Certificate of AnalysisJul 16, 2022 A111200

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Chemical and Physical Properties
Molecular Weight737.700 g/mol
XLogP3
Hydrogen Bond Donor Count3
Hydrogen Bond Acceptor Count12
Rotatable Bond Count6
Exact Mass737.055 Da
Monoisotopic Mass737.055 Da
Topological Polar Surface Area244.000 Ų
Heavy Atom Count49
Formal Charge0
Complexity1520.000
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 Count3
Documents & Articles
Citations of This Product
References
1. Suping Li, Jingyu Hu, Shiqi Ning, Wei Li, Ru Jiang, Jianguo Huang, Yong Li.  (2023)  Bacillus velezensis HY19 as a sustainable preservative in post-harvest citrus (Citrus reticulata Blanco L.) fruit management.  FOOD CONTROL,      [PMID:] [10.1016/j.foodcont.2023.110068]
2. XingYuan Ma, JianFeng Li.  (2023)  Preparation of full-color carbon quantum dots with multiple emission centers.  Materials Today Communications,      [PMID:] [10.1016/j.mtcomm.2023.106561]
3. Wang Junjie, Chen Jinhao, Wang Wenwen, Lu Jing, Li Yingying, Bai Ting, Chen Jiahui, Zhu Zongmin, Wang Dong.  (2023)  Preparation of boron-containing chitosan derivative and its application as intumescent flame retardant for epoxy resin.  CELLULOSE,  30  (7): (4663-4681).  [PMID:] [10.1007/s10570-023-05174-z]
4. Fenghua Xu, Yi Cheng, Guangcong Ruan, Liqin Fan, Yuting Tian, Zhifeng Xiao, Dongfeng Chen, Yanling Wei.  (2021)  New pathway ameliorating ulcerative colitis: focus on Roseburia intestinalis and the gut-brain axis.  Therapeutic Advances in Gastroenterology,      [PMID:33948112] [10.1177/17562848211004469]
5. Songwei Li, Yijie Dong, Lin Li, Yi Zhang, Xiufen Yang, Hongmei Zeng, Mingwang Shi, Xinwu Pei, Dewen Qiu, Qianhua Yuan.  (2019)  The Novel Cerato-Platanin-Like Protein FocCP1 from Fusarium oxysporum Triggers an Immune Response in Plants.  INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES,  20  (11): (2849).  [PMID:31212693] [10.3390/ijms20112849]
6. Yan Xuechao, Zhang Xiaoping, Li Qian.  (2018)  Preparation and characterization of CS/β-CD/Nano-ZnO composite porous membrane optimized by Box-Behnken for the adsorption of Congo red.  ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,  25  (22): (22244-22258).  [PMID:29804255] [10.1007/s11356-018-2110-3]
7. Jian-Dong Cui, Ji Qing Qiu.  (2012)  Production of Extracellular Water-Insoluble Polysaccharide from Pseudomonas sp..  JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY,      [PMID:22533491] [10.1021/jf3006273]
8. Yao Xu, Xin Tang, Yun Xing, Ziyu Pu, Chengshuang Ling, Qing Yang, Xiaoli Xiong.  (2024)  3D hierarchical flowerball-like CoSe2/MnSe nanosheet arrays as a novel electrode for electrochemical sensing of hydrazine.  MICROCHEMICAL JOURNAL,      [PMID:] [10.1016/j.microc.2024.110504]
9. Ke Ning, Junzhi Li, Xiaoyan Yang, Yuanyuan Xie, Rong Pan, Wei Sun, Ling Yu.  (2024)  Microfluidic device-assisted 3D cell spheroids isolation, staining and embedding.  MICROCHEMICAL JOURNAL,      [PMID:] [10.1016/j.microc.2024.111458]
10. Feng-Hua Xu, Xiao Sun, Jun Zhu, Ling-Yang Kong, Yuan Chang, Ning Li, Wen-Xiang Hui, Cong-Peng Zhang, Yi-Ming Cheng, Wen-Xin Han, Zhi-Min Tian, Yan-Ning Qiao, Dong-feng Chen, Lei Liu, Da-Yun Feng, Jing Han.  (2025)  Significance of the gut tract in the therapeutic mechanisms of polydopamine for acute cerebral infarction: neuro-immune interaction through the gut-brain axis.  Frontiers in Cellular and Infection Microbiology,      [PMID:40104260] [10.3389/fcimb.2024.1413018]
11. Jinyao Yin, Xuehuan Zhu, Yalong Chen, Yanyang Lv, Jiaxin Shan, Yuhan Liu, Wenbo Liu, Weiguo Miao, Xiao Li.  (2025)  The Exocyst Subunits EqSec5 and EqSec6 Promote Powdery Mildew Fungus Growth and Pathogenicity.  Journal of Fungi,  11  (1): (73).  [PMID:39852492] [10.3390/jof11010073]
12. Shan Chen, Yang Zheng, Qing Wang, Rong Mu, Xianchao Sun, Guanhua Ma, Liezhao Liu, Jiequn Ren, Kuo Huang, Guokang Chen.  (2025)  Harnessing Streptomyces for the Management of Clubroot Disease of Chinese Cabbage (Brassica rapa subsp. Pekinensis).  Plants-Basel,  14  (14): (2195).  [PMID:40733432] [10.3390/plants14142195]
13. Junyan Liang, Yang Zou, Haiyan Ju, Yonggang Lv.  (2025)  Rapid angiogenic hydrogel nanofiber scaffold promotes random flap regeneration and modulates inflammation.  WOUND REPAIR AND REGENERATION,  33  (2): (e70028).  [PMID:40231635] [10.1111/wrr.70028]
14. Jieyi Long, Zhonghui Qiao, Yuan Wang, Andong Zhou, Yibing Wang, Mengshan Zhang, Yong Zhou, Kevin H. Mayo, Lin Sun, Yifa Zhou.  (2025)  Examining Molecular Biodiversity Using Aniline Blue to Detect β-1,3-Glucans.  CHEMISTRY & BIODIVERSITY,      [PMID:41115155] [10.1002/cbdv.202501557]
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16. Shuai Zhao, Ye Xue, Ruiyao Chen, Xiangyi Ge, Ning An, Yawei Shi.  (2026)  Revealing an environmentally friendly process for degradation of walnut green husk by Klebsiella variicola M6 and β-xylosidase: Characterization and application.  LWT-FOOD SCIENCE AND TECHNOLOGY,      [PMID:] [10.1016/j.lwt.2026.119245]
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