Fluorescein-5-thiosemicarbazide - ≥95% , CAS No.76863-28-0

CAS: 76863-28-0 Cat. No.: F131546 Molecular Weight: 421.43
AVAILABLE TO ORDER
GRADE & PURITY ≥95%
Synonyms
PD044163 | MEUCHQDLZYLNQY-UHFFFAOYSA-N | 5-(aminocarbamothioylamino)-2-(3-hydroxy-6-oxo-xanthen-9-yl)benzoic acid | 5-(aminocarbamothioylamino)-2-(3-hydroxy-6-oxoxanthen-9-yl)benzoic acid | Fluorescein-5-thiosemicarbazide | SCHEMBL412012 | DTXSID60397968
Storage
Store at -20°C
Shipped In
Ice chest + Ice pads
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
5mg
F131546-5mg
8-12 wks(?) Production requires sourcing of materials. We appreciate your patience and understanding.
$53.90
25mg
F131546-25mg
4
$109.90
100mg
F131546-100mg
1
$339.90
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 -20°C Ships Ice chest + Ice pads 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 1 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Overview

Fluorescein-5-thiosemicarbazide is used in labeling of cell-surface functional groups (glycophorins). It is a cell impermeant fluorescent probe useful for determining protein and peptide topology on the cell surface
A compound used to label cell-surface functional groups


application:

Fluorescein-5-thiosemicarbazide can be used as a fluorescent labeling reagent to label:

Cell-surface functional groups (glycophorins) in the study of the effect of deoxygenation in the red blood cell membrane.

Saccharides applicable in polysaccharide imaging in live cells.

Chondroitin sulfate nanogels applicable in cell-specific drug delivery applications.

Specifications

Synonyms
PD044163 | MEUCHQDLZYLNQY-UHFFFAOYSA-N | 5-(aminocarbamothioylamino)-2-(3-hydroxy-6-oxo-xanthen-9-yl)benzoic acid | 5-(aminocarbamothioylamino)-2-(3-hydroxy-6-oxoxanthen-9-yl)benzoic acid | Fluorescein-5-thiosemicarbazide | SCHEMBL412012 | DTXSID60397968
Specifications & Purity
≥95%
Biochemical and Physiological Mechanisms
Fluorescent tag for labeling of cell-surface functional groups (glycophorins). Also used as a probe for detecting protein carbonyl derivatives.
Storage
Store at -20°C
Shipped In
Ice chest + Ice pads
This product requires cold chain shipping. Ground and other economy services are not available.
Note
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20°C. Generally, these will be useable for up to one month. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour. Need more advice on solubility, usage and handling? Please visit our frequently asked questions (FAQ) page for more details.
Purity
≥95%
Names and Identifiers
Pubchem Sid504762792
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/504762792
Canonical SmilesC1=CC(=C(C=C1NC(=S)NN)C(=O)O)C2=C3C=CC(=O)C=C3OC4=C2C=CC(=C4)O
IUPAC Name5-(aminocarbamothioylamino)-2-(3-hydroxy-6-oxoxanthen-9-yl)benzoic acid
InChIKeyMEUCHQDLZYLNQY-UHFFFAOYSA-N
INCHI1S/C21H15N3O5S/c22-24-21(30)23-10-1-4-13(16(7-10)20(27)28)19-14-5-2-11(25)8-17(14)29-18-9-12(26)3-6-15(18)19/h1-9,25H,22H2,(H,27,28)(H2,23,24,30)
Isomeric SMILES C1=CC(=C(C=C1NC(=S)NN)C(=O)O)C2=C3C=CC(=O)C=C3OC4=C2C=CC(=C4)O
WGK Germany 3
Molecular Weight 421.43
Reaxy-Rn 15488949
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=15488949&ln=

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 Benzoic acids  Benzoyl derivatives  1-hydroxy-2-unsubstituted benzenoids  Thiosemicarbazides  Heteroaromatic compounds  Cyclic ketones  Oxacyclic compounds  Monocarboxylic acids and derivatives  Carboxylic acids  Organosulfur compounds  Organopnictogen compounds  Organic oxides  Hydrocarbon derivatives  
Molecular FrameworkAromatic heteropolycyclic compounds
Substituents Xanthene - Benzoic acid or derivatives - Benzoic acid - Benzoyl - 1-hydroxy-2-unsubstituted benzenoid - Monocyclic benzene moiety - Benzenoid - Thiosemicarbazide - Heteroaromatic compound - Cyclic ketone - Monocarboxylic acid or derivatives - Carboxylic acid - Carboxylic acid derivative - Oxacycle - Hydrocarbon derivative - Organosulfur compound - Organooxygen compound - Organonitrogen compound - Organic oxide - Organopnictogen compound - Organic oxygen compound - Organic nitrogen compound - 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.

10 results found

Lot NumberCertificate TypeDateItem
C2611058Certificate of AnalysisMar 20, 2026 F131546
D2523005Certificate of AnalysisApr 24, 2025 F131546
G23051205Certificate of AnalysisApr 08, 2025 F131546
G23051206Certificate of AnalysisApr 08, 2025 F131546
G2305742Certificate of AnalysisApr 08, 2025 F131546
G2305743Certificate of AnalysisApr 08, 2025 F131546
K2212164Certificate of AnalysisAug 23, 2024 F131546
K2212171Certificate of AnalysisAug 23, 2024 F131546
G2203315Certificate of AnalysisApr 07, 2024 F131546
G2203314Certificate of AnalysisJun 01, 2022 F131546
Chemical and Physical Properties
SolubilitySoluble in DMF and Water,
SensitivityLight sensitive
Molecular Weight421.400 g/mol
XLogP3-1.000
Hydrogen Bond Donor Count5
Hydrogen Bond Acceptor Count7
Rotatable Bond Count3
Exact Mass421.073 Da
Monoisotopic Mass421.073 Da
Topological Polar Surface Area166.000 Ų
Heavy Atom Count30
Formal Charge0
Complexity852.000
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
Citations of This Product
References
1. Shuxin Jiang, Huanan Yin, Xiaohui Qi, Weiguo Song, Weiwei Shi, Jiaojiao Mou, Jie Yang.  (2020)  Immunomodulatory effects of fucosylated chondroitin sulfate from Stichopus chloronotus on RAW 264.7 cells.  CARBOHYDRATE POLYMERS,      [PMID:33142629] [10.1016/j.carbpol.2020.117088]
Solution Calculators
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