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Catechol violet indicator - 0.1%, high purity , CAS No.115-41-3

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Catechol violet indicator - 0.1%, high purity , CAS No.115-41-3

9 Citations

COA

Grade & Purity:

0.1%

Cas Number: 115-41-3
Molecular Weight: 386.38
Beilstein Registry Number: 353938
EC Number: 204-088-3
MDL number: MFCD00005868
PubChem CID: 66993

In stock

Item Number

P299248

Grouped product items
SKU	Size	Availability	Price	Qty
P299248-100ml	100ml	Available within 8-12 weeks(?) Production requires sourcing of materials. We appreciate your patience and understanding.	$21.90

Basic Description

Synonyms	Pyrocatechol violet \| 115-41-3 \| Catechol violet \| 1,2-Benzenediol, 4,4'-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis- \| Pyrocatechinsulfonephthalein \| 4-[3-(3,4-dihydroxyphenyl)-1,1-dioxo-2,1lambda6-benzoxathiol-3-yl]benzene-1,2-diol \| PKF \| NSC 8805; PKF; Pyrocatec
Specifications & Purity	0.1%
Shipped In	Normal
Product Description	Pyrocatechol Violet is a complexometric indicator dye. This phthalein dye chelates metals to form blue to blue-violet complexs. It is also a pH indicator with a transition interval from 0 - 8 (red to violet). It is known to be unstable when alkaline. The stability is improved at a neutral pH. When the pH is between 2-7 the color may be yellow.

Taxonomic Classification

Taxonomy Tree

Kingdom Organic compounds
- Superclass Organoheterocyclic compounds
  - Class Benzofurans
    - Subclass Benzofuranones

Kingdom	Organic compounds
Superclass	Organoheterocyclic compounds
Class	Benzofurans
Subclass	Benzofuranones
Intermediate Tree Nodes	Not available
Direct Parent	Benzofuranones
Alternative Parents	Phthalides Benzoxathioles Catechols 1-hydroxy-4-unsubstituted benzenoids 1-hydroxy-2-unsubstituted benzenoids Organosulfonic acid esters Benzene and substituted derivatives Oxacyclic compounds Organooxygen compounds Organic oxides Hydrocarbon derivatives
Molecular Framework	Aromatic heteropolycyclic compounds
Substituents	Benzofuranone - Phthalide - Benzoxathiole - Catechol - 1-hydroxy-4-unsubstituted benzenoid - 1-hydroxy-2-unsubstituted benzenoid - Phenol - Monocyclic benzene moiety - Benzenoid - Organosulfonic acid ester - Organosulfonic acid or derivatives - Organic sulfonic acid or derivatives - Oxacycle - Organooxygen compound - Hydrocarbon derivative - Organic oxide - Organic oxygen compound - Aromatic heteropolycyclic compound
Description	This compound belongs to the class of organic compounds known as benzofuranones. These are organic compounds containing a benzene ring fused to a furanone.
External Descriptors	Not available
1. Djoumbou Feunang Y, Eisner R, Knox C, Chepelev L, Hastings J, Owen G, Fahy E, Steinbeck C, Subramanian S, Bolton E, Greiner R, and Wishart DS. ClassyFire: Automated Chemical Classification With A Comprehensive, Computable Taxonomy. Journal of Cheminformatics, 2016, 8:61. DOI: 10.1186/s13321-016-0174-y

Names and Identifiers

IUPAC Name	4-[3-(3,4-dihydroxyphenyl)-1,1-dioxo-2,1λ6-benzoxathiol-3-yl]benzene-1,2-diol
INCHI	InChI=1S/C19H14O7S/c20-14-7-5-11(9-16(14)22)19(12-6-8-15(21)17(23)10-12)13-3-1-2-4-18(13)27(24,25)26-19/h1-10,20-23H
InChIKey	RRRCKIRSVQAAAS-UHFFFAOYSA-N
Smiles	C1=CC=C2C(=C1)C(OS2(=O)=O)(C3=CC(=C(C=C3)O)O)C4=CC(=C(C=C4)O)O
Isomeric SMILES	C1=CC=C2C(=C1)C(OS2(=O)=O)(C3=CC(=C(C=C3)O)O)C4=CC(=C(C=C4)O)O
WGK Germany	3
Molecular Weight	386.38
Beilstein	353938
Reaxy-Rn	353938
Reaxys-RN_link_address	https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=353938&ln=

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.

2 results found

Lot Number	Certificate Type	Date	Item
L2306005	Certificate of Analysis	Dec 21, 2023	P299248
J1922221	Certificate of Analysis	Sep 06, 2023	P299248

Chemical and Physical Properties

Melt Point(°C)	185°C
Molecular Weight	386.400 g/mol
XLogP3	2.300
Hydrogen Bond Donor Count	4
Hydrogen Bond Acceptor Count	7
Rotatable Bond Count	2
Exact Mass	386.046 Da
Monoisotopic Mass	386.046 Da
Topological Polar Surface Area	133.000 Å²
Heavy Atom Count	27
Formal Charge	0
Complexity	619.000
Isotope Atom Count	0
Defined Atom Stereocenter Count	0
Undefined Atom Stereocenter Count	0
Defined Bond Stereocenter Count	0
Undefined Bond Stereocenter Count	0
The total count of all stereochemical bonds	0
Covalently-Bonded Unit Count	1

Citations of This Product

How to Cite Aladdin Scientific Products?

1. Yiyang Guo, Yubin Ma, Xin Chen, Min Li, Xuehu Ma, Gang Cheng, Changying Xue, Yi Y. Zuo, Bingbing Sun. (2023) Mucus Penetration of Surface-Engineered Nanoparticles in Various pH Microenvironments. ACS Nano, 17 (3): (2813–2828).
2. Min Li, Fang Cheng, Changying Xue, Hanqi Wang, Chen Chen, Qiqi Du, Dan Ge, Bingbing Sun. (2019) Surface Modification of Stöber Silica Nanoparticles with Controlled Moiety Densities Determines Their Cytotoxicity Profiles in Macrophages. LANGMUIR, 35 (45): (14688–14695).
3. Yixuan Pan, Maohua Yang, Mei Zhang, Mingyan Jia. (2019) Rapid discrimination of commercial American ginseng and Asian ginseng according to diols composition using a colorimetric sensor array. SENSORS AND ACTUATORS B-CHEMICAL, 294 (48).
4. Zhonghua Xue, Xiaoxia Fu, Honghong Rao, Mohammed Hassan Ibrahim, Lulu Xiong, Xiuhui Liu, Xiaoquan Lu. (2017) A colorimetric indicator-displacement assay for cysteine sensing based on a molecule-exchange mechanism. TALANTA, 174 (667).
5. Sihua Qian, Hengwei Lin. (2014) A facile approach to cross-reactive colorimetric sensor arrays: an application in the recognition of the 20 natural amino acids. RSC Advances, 4 (56): (29581-29585).
6. Maohua Yang, Liangli Li, Chunni Zhao, Mei Zhang, Mingyan Jia. (2024) A colorimetric sensor array for the rapid identification of benzylisoquinoline alkaloids and Coptidis Rhizoma based on urease inhibition. FOOD CHEMISTRY, (142610).
7. Zhenwu Liang, Yuelian Qin, Xinyu Zhong, Xiaolong Ma, Lijun Deng, Ziwei Zou, Linlin Feng, Ziping Pan, Shihan Pan, Mei Li, Zhiheng Su, Jinxia Wu. (2025) A smartphone-integrated paper-based colorimetric sensor array: Real-time detection and classification of flavonoids. TALANTA, 293 (128030).
8. Yao Chen, Yuan Li, Li-Lin Lin, Yue Liao, Huan Fang, Tong Wang. (2024) Intelligent identification of picking periods of Lu’an Guapian tea by an indicator displacement colorimetric sensor array combined with machine learning. FOOD RESEARCH INTERNATIONAL, 195 (114960).
9. Zhenhao Zhao, Junbo Hu, Huimin Cui, Tianrui Zhao, Yaping Liu, Zhengxuan Wang, Guiguang Cheng. (2025) Tyrosinase inhibition and enzyme kinetics red rice bran protein peptides: mechanism, identification, in silico exploration, and experimental validation. Food Bioscience, (106319).

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