Sulforhodamine B, acid form - ≥95% , CAS No.2609-88-3

CAS: 2609-88-3 Cat. No.: S477387 Molecular Weight: 558.67 EC Number: 220-025-2
AVAILABLE TO ORDER
GRADE & PURITY ≥95%
Synonyms
2-(3,6-BIS(DIETHYLAMINO)XANTHYLIUM-9-YL)-5-SULFOBENZENESULFONATE | Kiton Rhodamine B | SCHEMBL18483 | 2-[3-(diethylamino)-6-diethylazaniumylidenexanthen-9-yl]-5-sulfobenzenesulfonate | DTXSID4048068 | Sulforhodamine B, acid form | SULFORHODAMINEB | Sulfo-
Storage
Store at 2-8°C,Protected from light
Shipped In
Wet ice
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
100mg
S477387-100mg
2
$15.90
500mg
S477387-500mg
1
$39.90
Enter a quantity for the sizes you want to add.
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Why this grade

≥95% for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Store at 2-8°C,Protected from light Ships Wet ice 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

Description

Sulforhodamine B (SRB) is a fluorescent protein dye. It was reported that the dye binds itself to the amino acid residues of tricholoroacetic acid fixed cells in mild basic conditions and extracts itself into the solution under mild acidic conditions.pH sensitive of SRB towards it reactivity to living cells renders it useful for scaling drug induced cytotoxicity and cell proliferations. SRB assay was used to monitor the enzymatic activity of living cells.

Specifications

Synonyms
2-(3, 6-BIS(DIETHYLAMINO)XANTHYLIUM-9-YL)-5-SULFOBENZENESULFONATE | Kiton Rhodamine B | SCHEMBL18483 | 2-[3-(diethylamino)-6-diethylazaniumylidenexanthen-9-yl]-5-sulfobenzenesulfonate | DTXSID4048068 | Sulforhodamine B, acid form | SULFORHODAMINEB | Sulfo-
Specifications & Purity
≥95%
Storage
Store at 2-8°C, Protected from light
Shipped In
Wet ice
This product requires cold chain shipping. Ground and other economy services are not available.
Purity
≥95%
Names and Identifiers
Canonical SmilesCCN(CC)C1=CC2=C(C=C1)C(=C3C=CC(=[N+](CC)CC)C=C3O2)C4=C(C=C(C=C4)S(=O)(=O)O)S(=O)(=O)[O-]
IUPAC Name2-[3-(diethylamino)-6-diethylazaniumylidenexanthen-9-yl]-5-sulfobenzenesulfonate
InChIKeyIOOMXAQUNPWDLL-UHFFFAOYSA-N
INCHI1S/C27H30N2O7S2/c1-5-28(6-2)18-9-12-21-24(15-18)36-25-16-19(29(7-3)8-4)10-13-22(25)27(21)23-14-11-20(37(30,31)32)17-26(23)38(33,34)35/h9-17H,5-8H2,1-4H3,(H-,30,31,32,33,34,35)
Isomeric SMILES CCN(CC)C1=CC2=C(C=C1)C(=C3C=CC(=[N+](CC)CC)C=C3O2)C4=C(C=C(C=C4)S(=O)(=O)O)S(=O)(=O)[O-]
Molecular Weight 558.67

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

Taxonomic Classification

Taxonomy Tree

KingdomOrganic compounds
SuperclassOrganoheterocyclic compounds
ClassBenzopyrans
Subclass1-benzopyrans
Intermediate Tree Nodes Dibenzopyrans
Direct ParentXanthenes
Alternative Parents Benzenesulfonic acids and derivatives  Benzenesulfonyl compounds  1-sulfo,2-unsubstituted aromatic compounds  Dialkylarylamines  Sulfonyls  Secondary ketimines  Organosulfonic acids  Heteroaromatic compounds  Oxacyclic compounds  Organopnictogen compounds  Organooxygen compounds  Organic zwitterions  Organic oxides  Hydrocarbon derivatives  
Molecular FrameworkAromatic heteropolycyclic compounds
Substituents Xanthene - Benzenesulfonate - Arylsulfonic acid or derivatives - Benzenesulfonyl group - 1-sulfo,2-unsubstituted aromatic compound - Tertiary aliphatic/aromatic amine - Dialkylarylamine - Monocyclic benzene moiety - Benzenoid - Secondary ketimine - Organic sulfonic acid or derivatives - Organosulfonic acid or derivatives - Organosulfonic acid - Sulfonyl - Heteroaromatic compound - Tertiary amine - Oxacycle - Organopnictogen compound - Organonitrogen compound - Organic oxygen compound - Organic nitrogen compound - Amine - Organosulfur compound - Organic oxide - Hydrocarbon derivative - Organooxygen compound - Organic zwitterion - Aromatic heteropolycyclic compound
DescriptionThis compound belongs to the class of organic compounds known as xanthenes. These are polycyclic aromatic compounds containing a xanthene moiety, which consists of two benzene rings joined to each other by a pyran ring.
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.

4 results found

Lot NumberCertificate TypeDateItem
B2528601Certificate of AnalysisFeb 15, 2025 S477387
B2528602Certificate of AnalysisFeb 15, 2025 S477387
B2528603Certificate of AnalysisFeb 15, 2025 S477387
B2528604Certificate of AnalysisFeb 15, 2025 S477387
Chemical and Physical Properties
SensitivityLight sensitive
Melt Point(°C)>300°C
Molecular Weight558.700 g/mol
XLogP32.200
Hydrogen Bond Donor Count1
Hydrogen Bond Acceptor Count8
Rotatable Bond Count7
Exact Mass558.149 Da
Monoisotopic Mass558.149 Da
Topological Polar Surface Area144.000 Ų
Heavy Atom Count38
Formal Charge0
Complexity1170.000
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 Count1
Documents & Articles
Citations of This Product
References
1. Yihang Wu, Zixiu Liu, Zhenxiu He, Jumei Yi, Xingfang Qiao, Chunbin Tan, Yajing Xing, Yaobo Zeng, Dajian Yang, Junlin Yin, Baomin Fan, Guangzhi Zeng.  (2023)  Cantharidin analogue alleviates dextran sulfate sodium-induced colitis in mice by inhibiting the activation of NF-κB signaling.  EUROPEAN JOURNAL OF MEDICINAL CHEMISTRY,      [PMID:37643546] [10.1016/j.ejmech.2023.115731]
2. Yongjie Zhang, Yu-Ming Sun, Gonghui Li, Meiyan Du, Ning Sheng, Jinglin Shen.  (2023)  Fluorescent hydrogels with emission enhancement and CPL-activity depending on gelation states.  Journal of Materials Chemistry C,  11  (9): (3292-3299).  [PMID:] [10.1039/D2TC04961A]
3. Yin Zhao, Dongjuan Chen, Zhichen Xu, Tao Li, Jiang Zhu, Rui Hu, Guoyong Xu, Ying Li, Yunhuang Yang, Maili Liu.  (2023)  Integrating CRISPR-Cas12a into a Microfluidic Dual-Droplet Device Enables Simultaneous Detection of HPV16 and HPV18.  ANALYTICAL CHEMISTRY,      [PMID:36724385] [10.1021/acs.analchem.2c05320]
4. Zheyu Li, Yue Xiong, Shuangli Li, Jiang Zhu, Rui Hu, Ying Li, Yunhuang Yang, Maili Liu.  (2021)  A fast microfluidic mixer enabling rapid preparation of homogeneous PEG and bicelle media for RDC in NMR analysis.  CHEMICAL ENGINEERING JOURNAL,      [PMID:] [10.1016/j.cej.2021.133817]
5. Jian-Qing Gao, Qing Lv, Li-Ming Li, Xin-Jiang Tang, Fan-Zhu Li, Yu-Lan Hu, Min Han.  (2013)  Glioma targeting and blood–brain barrier penetration by dual-targeting doxorubincin liposomes.  BIOMATERIALS,      [PMID:23628475] [10.1016/j.biomaterials.2013.03.097]
6. Qing Lv, Li-Min Li, Min Han, Xin-Jiang Tang, Jin-Na Yao, Xiao-Ying Ying, Fan-Zhu Li, Jian-Qing Gao.  (2013)  Characteristics of sequential targeting of brain glioma for transferrin-modified cisplatin liposome.  INTERNATIONAL JOURNAL OF PHARMACEUTICS,      [PMID:23347891] [10.1016/j.ijpharm.2013.01.025]
7. Yang Tao, Maoxin Du, Meihua Zhu, Yinyue Wang, Yusong Fei, Yu-Qiang Zhao, Junjie Ma, Ruifeng Fan, Fang Dai, Jingchao Chen, Junlin Yin, Baomin Fan, Guangzhi Zeng.  (2024)  Antitumor Effect of Peptide–Camptothecin Conjugate Targeting CD133 Protein.  BIOCONJUGATE CHEMISTRY,      [PMID:39527780] [10.1021/acs.bioconjchem.4c00485]
8. Jiamei LI, An YAN, Mingquan WANG, Di LI.  (2024)  Aptamer and phosphorothioated DNA engineered liposomes as a targeted intracellular protein delivery system.  CHINESE JOURNAL OF ANALYTICAL CHEMISTRY,      [PMID:] [10.1016/j.cjac.2024.100400]
9. Mengqiu Xiong, Yao Wang, Shuhan Lu, Nasifu Lubanga, Tao Li, Zhihao Li, Bangshun He, Ying Li.  (2025)  Space-coded microchip for multiplexed respiratory virus detection via CRISPR-Cas12a and RPA.  TALANTA,      [PMID:40024134] [10.1016/j.talanta.2025.127815]
10. Wang Changxing, Ning Yayun, Yue Yifan, Du Guoli, Xie Yuechi, Li Jianing, Bibi Nazia, Wen Xiaoxiang, Li Jianing, Yang Sen, Lu Xuegang.  (2025)  Scalable synthesis of phosphorescent SiO2 nanospheres and their use for angle-dependent and thermoresponsive photonic gels with multimode luminescence.  Nature Communications,  16  (1): (1-11).  [PMID:40681506] [10.1038/s41467-025-61967-9]
11. Shuai Zhan, Ningjing Zhang, Yijie Lou, Xia Ding, Zhe Chen, Yun Huang, Wanjing Ding.  (2025)  Degradation of NLRP3 by selective ROCK2 inhibitor alleviates acute lung injury.  EUROPEAN JOURNAL OF PHARMACOLOGY,      [PMID:40749867] [10.1016/j.ejphar.2025.178009]
12. Wang Wenwen, Yang Dongjiang, Yang Weiyou, Sun Jin, Hou Huilin.  (2016)  Efficient visible-light driven photocatalysts: coupling TiO2(AB) nanotubes with g-C3N4 nanoflakes.  JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS,  28  (2): (1271-1280).  [PMID:] [10.1007/s10854-016-5655-2]
13. Feng Tao, Chenkai Sun, Yingze Li, Yingying Wang, Peng Ning, Xiaolei Chen, Donglei Yang, Rui Gao, Yuan Li, Chang Xu, Zihan Guo, Haotian Chen, Xing Fan, Li Peng, Cheng Lv, Xinjian Fan, Chang Chen, Yu Cheng.  (2025)  Rotational-bouncing nanomotors with atomic edges for lysosomal mechanoporation.  Matter,      [PMID:] [10.1016/j.matt.2025.102491]
14. Chenchen Jiang, Siqi Chen, Min Huang, Xiaojiao Yi, Haiying Ding, Junfeng Zhu, Luo Fang.  (2025)  LC–MS/MS based cellular pharmacokinetics to explore the mechanism of palmatine against doxorubicin-induced cardiotoxicity.  JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS,      [PMID:40544700] [10.1016/j.jpba.2025.117037]
15. Yan-Fei Xu, Yun-Jie Wang, Zhuo-Tao Li, Li-Yuan Shi, Qia Wang, Ning-Hua Tan, Xue-Jia Zhang, Li Feng, Zhe Wang.  (2026)  Quinones from Rubia manjith and their antitumor activity.  FITOTERAPIA,      [PMID:41565120] [10.1016/j.fitote.2026.107097]
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