6-Carboxy-X-rhodamine, succinimidyl ester (6-ROX, SE) - BioReagent,for microscopy,Biological Stain,for fluorescence analysis,≥95% , CAS No.216699-36-4

CAS: 216699-36-4 Cat. No.: R664145 Molecular Weight: 631.674 EC Number: 634-980-1 PubChem CID: 2762610
AVAILABLE TO ORDER
GRADE & PURITY BioReagent ? BioReagent grade — tested suitable for life-science and molecular-biology use. Use for cell culture, assays, and biochemical work needing biological compatibility. Biological Stain ? Biological stain grade — dyes characterized for staining cells and tissues. Use in histology and microscopy where staining consistency matters. for Fluorescence analysis ? Fluorescence-analysis grade — very low fluorescent impurities for clean spectra. Use in fluorescence assays where background interferes. for Microscopy ? Microscopy grade — reagents/stains suited to sample prep and imaging. Use in microscopy where clarity and low background are needed. ≥95%
Synonyms
6-ROX, SE | 9-(2-Carboxy-5-(((2,5-dioxopyrrolidin-1-yl)oxy)carbonyl)phenyl)-2,3,6,7,12,13,16,17-octahydro-1H,5H,11H,15H-xantheno[2,3,4-ij:5,6,7-i'j']diquinolizin-18-ium inner salt | 6-Carboxy-X-rhodamine, succinimidyl ester (single isomer)
Storage
Protected from light,Store at -20°C
Shipped In
Ice chest + Ice pads
Application
Cell Staining, Fluorescence Analysis
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
1mg
R664145-1mg
1-2 wks(?)
Item is derived from our semi-finished stock and is processed in 1-2 weeks.
$89.90
5mg
R664145-5mg
1-2 wks(?)
Item is derived from our semi-finished stock and is processed in 1-2 weeks.
$189.90
25mg
R664145-25mg
1-2 wks(?)
Item is derived from our semi-finished stock and is processed in 1-2 weeks.
$1,399.90
100mg
R664145-100mg
1-2 wks(?)
Item is derived from our semi-finished stock and is processed in 1-2 weeks.
$2,309.90
Enter a quantity for the sizes you want to add.
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Why this grade

BioReagent,for microscopy,Biological Stain,for fluorescence analysis,≥95% Biological Stain,BioReagent,for Fluorescence analysis,for Microscopy for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Protected from light,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 0 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Overview

6-Carboxy-X-rhodamine, succinimidyl ester (6-ROX, SE) is a fluorescent dye for oligonucleotide labeling and automated DNA sequencing.

Specifications

Synonyms
6-ROX, SE | 9-(2-Carboxy-5-(((2, 5-dioxopyrrolidin-1-yl)oxy)carbonyl)phenyl)-2, 3, 6, 7, 12, 13, 16, 17-octahydro-1H, 5H, 11H, 15H-xantheno[2, 3, 4-ij:5, 6, 7-i'j']diquinolizin-18-ium inner salt | 6-Carboxy-X-rhodamine, succinimidyl ester (single isomer)
Specifications & Purity
BioReagent, for microscopy, Biological Stain, for fluorescence analysis, ≥95%
Stability And Storage
Store at -20℃ long term (12 months). Store in the dark.
Storage
Protected from light, Store at -20°C
Shipped In
Ice chest + Ice pads
This product requires cold chain shipping. Ground and other economy services are not available.
Grade
Biological Stain, BioReagent, for Fluorescence analysis, for Microscopy
Purity
≥95%
Names and Identifiers
Canonical SmilesC1CC2=CC3=C(C4=C2N(C1)CCC4)OC5=C6CCC[N+]7=C6C(=CC5=C3C8=C(C=CC(=C8)C(=O)ON9C(=O)CCC9=O)C(=O)[O-])CCC7
IUPAC Name4-(2,5-dioxopyrrolidin-1-yl)oxycarbonyl-2-(3-oxa-23-aza-9-azoniaheptacyclo[17.7.1.15,9.02,17.04,15.023,27.013,28]octacosa-1(27),2(17),4,9(28),13,15,18-heptaen-16-yl)benzoate
InChIKeyKWADUASJUMATIK-UHFFFAOYSA-N
INCHI1S/C37H33N3O7/c41-29-11-12-30(42)40(29)47-37(45)22-9-10-23(36(43)44)26(19-22)31-27-17-20-5-1-13-38-15-3-7-24(32(20)38)34(27)46-35-25-8-4-16-39-14-2-6-21(33(25)39)18-28(31)35/h9-10,17-19H,1-8,11-16H2
Isomeric SMILES C1CC2=CC3=C(C4=C2N(C1)CCC4)OC5=C6CCC[N+]7=C6C(=CC5=C3C8=C(C=CC(=C8)C(=O)ON9C(=O)CCC9=O)C(=O)[O-])CCC7
PubChem CID 2762610
Molecular Weight 631.674

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 P-phthalic acid and derivatives  Diarylethers  Hydroquinolines  Benzoic acids  Benzoyl derivatives  Dialkylarylamines  Aralkylamines  Pyrrolidine-2-ones  Dicarboxylic acids and derivatives  Dicarboximides  Amino acids  Lactams  Carboxylic acid salts  Oxacyclic compounds  Azacyclic compounds  Carboxylic acids  Carbonyl compounds  Hydrocarbon derivatives  Organic oxides  Organic salts  Organic zwitterions  Organopnictogen compounds  
Molecular FrameworkAromatic heteropolycyclic compounds
Substituents Xanthene - Para_phthalic_acid - Diaryl ether - Tetrahydroquinoline - Benzoic acid or derivatives - Benzoic acid - Tertiary aliphatic/aromatic amine - Benzoyl - Dialkylarylamine - Aralkylamine - 2-pyrrolidone - Benzenoid - Monocyclic benzene moiety - Pyrrolidone - Dicarboxylic acid or derivatives - Pyrrolidine - Dicarboximide - Amino acid or derivatives - Carboxylic acid salt - Amino acid - Lactam - Tertiary amine - Carboxylic acid derivative - Azacycle - Ether - Oxacycle - Carboxylic acid - Organic oxygen compound - Hydrocarbon derivative - Amine - Organic nitrogen compound - Carbonyl group - Organic oxide - Organopnictogen compound - Organonitrogen compound - Organooxygen compound - Organic salt - 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
ZJ26F0636306Certificate of AnalysisJun 11, 2026 R664145
ZJ26F0636307Certificate of AnalysisJun 11, 2026 R664145
ZJ26F0636308Certificate of AnalysisJun 11, 2026 R664145
ZJ26F0636309Certificate of AnalysisJun 11, 2026 R664145
Chemical and Physical Properties
SolubilitySolubility in DMSO: 4.17 mg/mL (6.60 mM; sonication-assisted dissolution). Hygroscopic DMSO significantly affects the solubility of the product; please use freshly opened DMSO.
SensitivityLight-sensitive
Molecular Weight631.700 g/mol
XLogP33.900
Hydrogen Bond Donor Count0
Hydrogen Bond Acceptor Count8
Rotatable Bond Count4
Exact Mass631.232 Da
Monoisotopic Mass631.232 Da
Topological Polar Surface Area119.000 Ų
Heavy Atom Count47
Formal Charge0
Complexity1490.000
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
Solution Calculators
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