Rhodamine B Chloride CAS 81-88-9
| CAS No. | 81-88-9 |
| Molecular Formula | C28H31N2O3 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Rhodamine B Chloride is closely related to a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Rhodamine B Chloride (CAS 81-88-9), molecular formula C28H31N2O3Cl and molecular weight 479.02 g/mol, is a CATO reference standard with documented purity and traceability.
Rhodamine B Chloride (C28H31N2O3Cl) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures Rhodamine B Chloride under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C28H31N2O3 Cl |
| Molecular Weight | 479.02 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Rhodamine Standards
- Rhodamine 800 (CAS 101027-54-7)
- Rhodamine 101 internal salt (CAS 116450-56-7)
- Rhodamine 6G Bis(aminoethyl)amine Amide Bis (Trifluoroacetate) (CAS 1173097-37-4)
- Rhodamine 6G Perchlorate (CAS 13161-28-9)
- Rhodamine 110 (CAS 13558-31-1)
- Rhodamine 800 (CAS 137993-41-0)
- Rhodamine B octadecyl ester perchlorate, 98% (CAS 142179-00-8)
- Rhodamine B isothiocyanate mixed isomers (CAS 14696-19-6)
Recommended Standards
- 2-Methyl-2-(3-nitrophenyl)-1,3-dioxolane (CAS 51226-13-2)
- Heptanoic acid-5,6,7-<SUP>13</SUP>C<SUB>3</SUB> (CAS 1173022-17-7)
- 4-(sec-butyl)pyridine (CAS 27876-19-3)
- N-[2-Methyl-5-(1-methylethyl)phenyl]glycine (CAS 1368714-51-5)
- DL-RuCl[(p-cymene(BINAP)]Cl (CAS 376354-47-1)
- 4-Hydroxy-2-(methylthio)benzoic acid (CAS 1243358-19-1)
- Cis-5-(4-ethoxyphenyl)-1-phenyl-4-(piperazine-1-carbonyl)pyrrolidin-2-one hydrochloride (CAS 38327-22-9)
- 3-[(2-Benzoyl-3-oxo-3-phenylprop-1-en-1-yl)amino]-7,7-dimethyl-5,6,7,8-tetrahydro-2H-chromene-2,5-dione (CAS 220957-57-3)
- 2-Oxoethyl butyrate (CAS 136831-95-3)
- Tirzepatide Impurity 10 (CAS CATO-C4X-324010)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
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