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Cresol red - 97%, high purity , CAS No.1733-12-6

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Cresol red - 97%, high purity , CAS No.1733-12-6

7 Citations

COA

Grade & Purity:

≥97%

Cas Number: 1733-12-6
Molecular Weight: 382.43
Beilstein Registry Number: 343399
EC Number: 217-064-2
MDL number: MFCD00005878
PubChem CID: 73013
PubChem SID: 488184749

In stock

Item Number

C100244

Grouped product items
SKU	Size	Availability	Price
C100244-1g	1g	9	$24.90
C100244-5g	5g	3	$68.90
C100244-25g	25g	Available within 4-8 weeks(?) Items will be manufactured post-order and can take 4-8 weeks. Thank you for your patience!	$299.90
C100244-100g	100g	Available within 4-8 weeks(?) Items will be manufactured post-order and can take 4-8 weeks. Thank you for your patience!	$999.90

Basic Description

Synonyms	Cresol red \| 1733-12-6 \| o-Cresolsulfonphthalein \| o-Cresol Red \| Cresolsulfophthalein \| o-Cresolsulfonephthalein \| 3,3-bis(4-hydroxy-3-methylphenyl)-3H-benzo[c][1,2]oxathiole 1,1-dioxide \| Phenol, 4,4'-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis[2-methyl- \| 3',3''-Di
Specifications & Purity	≥97%
Shipped In	Normal
Product Description	Cresol red is commonly used with lead acetate for the detection of urease after PAGE. It is also used as an indicator with the following transition intervals: pH 1.8 (orange) to pH 2.0 (yellow); pH 7.0 (yellow) to pH 8.8 (violet). Cresol Red is used as a tracking dye in DNA, RNA (agarose) and protein (polyacrylamide) electrophoresis. In agarose, Cresol Red runs with an apparent molecular size of approx. 125 bp DNA. Cresol Red does not inhibit Taq polymerase. Recently Cresol Red has been used as a pH sensitive indicator dye in nanoengineered optical urea biosensors films and hetero-core structured fiber optic pH sensor.

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 Ortho cresols Toluenes 1-hydroxy-2-unsubstituted benzenoids Organosulfonic acid esters Oxacyclic compounds Organooxygen compounds Organic oxides Hydrocarbon derivatives
Molecular Framework	Aromatic heteropolycyclic compounds
Substituents	Benzofuranone - Phthalide - Benzoxathiole - O-cresol - 1-hydroxy-2-unsubstituted benzenoid - Toluene - 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	polyphenol - arenesulfonate ester - 2,1-benzoxathiole - sultone
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

Pubchem Sid	488184749
Pubchem Sid Url	https://pubchem.ncbi.nlm.nih.gov/substance/488184749
IUPAC Name	4-[3-(4-hydroxy-3-methylphenyl)-1,1-dioxo-2,1λ6-benzoxathiol-3-yl]-2-methylphenol
INCHI	InChI=1S/C21H18O5S/c1-13-11-15(7-9-18(13)22)21(16-8-10-19(23)14(2)12-16)17-5-3-4-6-20(17)27(24,25)26-21/h3-12,22-23H,1-2H3
InChIKey	OBRMNDMBJQTZHV-UHFFFAOYSA-N
Smiles	CC1=C(C=CC(=C1)C2(C3=CC=CC=C3S(=O)(=O)O2)C4=CC(=C(C=C4)O)C)O
Isomeric SMILES	CC1=C(C=CC(=C1)C2(C3=CC=CC=C3S(=O)(=O)O2)C4=CC(=C(C=C4)O)C)O
WGK Germany	3
Molecular Weight	382.43
Beilstein	343399
Reaxy-Rn	343399
Reaxys-RN_link_address	https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=343399&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.

12 results found

Lot Number	Certificate Type	Date	Item
D2524020	Certificate of Analysis	May 07, 2025	C100244
F2302911	Certificate of Analysis	Mar 05, 2025	C100244
C2320605	Certificate of Analysis	Dec 12, 2024	C100244
L2201765	Certificate of Analysis	Sep 19, 2024	C100244
L2201752	Certificate of Analysis	Sep 19, 2024	C100244
L2201737	Certificate of Analysis	Sep 19, 2024	C100244
H2402129	Certificate of Analysis	Aug 09, 2024	C100244
H2402131	Certificate of Analysis	Aug 09, 2024	C100244
H2402128	Certificate of Analysis	Aug 09, 2024	C100244
H2402130	Certificate of Analysis	Aug 09, 2024	C100244
L2201764	Certificate of Analysis	Nov 19, 2022	C100244
H2426271	Certificate of Analysis	Nov 19, 2022	C100244

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Chemical and Physical Properties

Solubility	Soluble in water (slightly at 20 °C), 50% ethanol (0.1%), dil. acids, and dil. alkalies. Insoluble in benzene.
Sensitivity	Moisture sensitive.
Melt Point(°C)	290 °C
Molecular Weight	382.400 g/mol
XLogP3	3.700
Hydrogen Bond Donor Count	2
Hydrogen Bond Acceptor Count	5
Rotatable Bond Count	2
Exact Mass	382.087 Da
Monoisotopic Mass	382.087 Da
Topological Polar Surface Area	92.200 Å²
Heavy Atom Count	27
Formal Charge	0
Complexity	615.000
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. Limei Tian, Haixu Dou, Yanlong Shao, Yaozhen Yi, Xue Fu, Jie Zhao, Yong Fan, Weihua Ming, Luquan Ren. (2023) Magnetically controlled super-wetting surface switching between ultra-low and ultra-high droplet adhesion. CHEMICAL ENGINEERING JOURNAL, 456 (141093).
2. Xing Xing, Mi Wang, Hong Meng. (2022) Color Palette Tactic for Multicolor Electrochromics Enabled by Electrolyte Thermochromic Engineering. Advanced Optical Materials, 10 (22): (2200941).
3. Zhongwei Guo, Kaifei Zhang, Hui Guan, Meihong Liu, Sanchuan Yu, Congjie Gao. (2021) Improved separation efficiency of polyamide-based composite nanofiltration membrane by surface modification using 3-aminopropyltriethoxysilane. SEPARATION AND PURIFICATION TECHNOLOGY, 274 (119142).
4. Yang Jin, Cao Yan, Zhang Naidong. (2020) Color-mixing effects of photosensitive organic dyes initiated by superoxide anion radicals under visible-light irradiation. Environmental Chemistry Letters, 18 (6): (2127-2132).
5. Jianye Ji, Xin Ge, Xiaoyan Pang, Ruoling Liu, Shuyi Wen, Jiaqi Sun, Weijie Liang, Jianfang Ge, Xunjun Chen. (2019) Synthesis and Characterization of Room Temperature Vulcanized Silicone Rubber Using Methoxyl-Capped MQ Silicone Resin as Self-Reinforced Cross-Linker. Polymers, 11 (7): (1142).
6. Wen Sun, Hui Li, Han Wang, Shan Xiao, Jihui Wang, Liang Feng,. (2015-06-17) Sensitivity enhancement of pH indicator and its application in the evaluation of fish freshness.. Talanta, ( 127-131 ).
7. Duanyang Wu, Junxue Li, Jing Xu, Wei Cheng. (2024) Freezing-enhanced chlorination of organic pollutants for water treatment. RSC Advances, 14 (17): (12218-12224).

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