Rhodamine 123 CAS 62669-70-9
| CAS No. | 62669-70-9 |
| Molecular Formula | C21H16N2O3 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
Rhodamine 123 (CAS 62669-70-9) is a high-purity analytical reference standard with the molecular formula C21H16N2O3HCl and a molecular weight of 380.83 g/mol.
Structurally, Rhodamine 123 (C21H16N2O3HCl) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 14.0, corresponding to approximately 14 ring(s) or double-bond equivalent(s). With a molecular weight of 380.83 g/mol, it falls into the moderately-high-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
CATO manufactures Rhodamine 123 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 | C21H16N2O3 HCl |
| Molecular Weight | 380.83 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°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.) | 1974 |
| 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
- (R)-2-bromopentanoic acid (CAS 42990-12-5)
- 2-Bromo-n-(1-methoxypropan-2-yl)benzenesulfonamide (CAS 903302-00-1)
- 4-Methyl-N-(3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzyl)aniline (CAS 1454653-68-9)
- 2-Methyl-N-(2-morpholinoethyl)-3-phenyl-5-propylpyrazolo[1,5-a]pyrimidin-7-amine (CAS 899396-69-1)
- 7-(4-Butylphenyl)-5,10-dihydroindeno[1,2-b]indole-2-carboxylic acid (CAS 920302-46-1)
- 2-(Aminomethyl)-6-bromo-5-(difluoromethyl)-3-fluoropyridine (CAS 1805371-46-3)
- 4-(3-Piperidyl)aniline (CAS 19733-56-3)
- Fmoc-N-Me-D-Arg(Pbf)-OH (CAS 2044710-57-6)
- 7-(Piperazin-1-yl)thieno[2,3-c]pyridine hydrochloride (CAS 850734-85-9)
- Pancreatic Polypeptide (human) trifluoroacetate salt (CAS 75976-10-2)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com