3,3'-dioxo-[2,2'-biindolinylidene]-5,5'-disulfonic acid CAS 483-20-5
| CAS No. | 483-20-5 |
| Molecular Formula | C16H10N2O8S2 |
| Molecular Weight | 422.39 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3,3'-dioxo-[2,2'-biindolinylidene]-5,5'-disulfonic acid (C16H10N2O8S2) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
3,3'-dioxo-[2,2'-biindolinylidene]-5,5'-disulfonic acid (CAS 483-20-5), molecular formula C16H10N2O8S2 and molecular weight 422.39 g/mol, is a CATO reference standard with documented purity and traceability.
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.
CATO manufactures 3,3'-dioxo-[2,2'-biindolinylidene]-5,5'-disulfonic acid 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 | C16H10N2O8S2 |
| Molecular Weight | 422.39 g/mol |
| Purity | 97%+ |
| 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 |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 2 |
Related dioxo Standards
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Recommended Standards
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- 2-{[(2,6-dichlorophenyl)methyl]sulfanyl}-N-methyl-6-[(phenylsulfanyl)methyl]pyrimidin-4-amine (CAS 341965-39-7)
- N-[3,5-Bis(Trifluoromethyl)Phenyl]-2-(Isobutylsulfanyl)Isonicotinamide (CAS 339181-24-7)
- N-(2-Chlorophenyl)-2,5-diphenylisoxazolidine-3-carboxamide (CAS 62513-19-3)
- 3-Bromo-5-isopropylphenylboronic acid pinacol ester (CAS 1392146-18-7)
- trans-1-Isopropyl-4-trifluoromethyl-cyclohexane (CAS 52486-21-2)
- 2-Amino-4-(3-fluoro-4-phenoxyphenyl)-6-(hydroxymethyl)-8-oxo-4,8-dihydropyrano[3,2-b]pyran-3-carbonitrile (CAS 896623-65-7)
- Bis(4-fluorophenyl)-1,2-oxazol-5-amine (CAS 1096934-22-3)
- Amlodipine Impurity 14 (CAS 1821498-25-2)
- 4-((Furan-2-ylmethyl)thio)-3-nitrobenzaldehyde (CAS 175278-53-2)
- Bicyclo[2.2.1]Heptan-2-ylhydrazine (CAS 786615-76-7)
- Methyl 2-{[6-(methanesulfonylmethyl)-2-phenylpyrimidin-4-yl]sulfanyl}benzoate (CAS 478031-59-3)
- Insulin Pork(≥27 USP units/mg) (CAS 12584-58-6)
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