Pigment Red 53:1 CAS 5160-02-1
| CAS No. | 5160-02-1 |
| Molecular Formula | 2*C17H12ClN2O4S |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 513.13 g/mol gives Pigment Red 53:1 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Pigment Red 53:1 (CAS 5160-02-1), molecular formula C17H12ClN2O4SBa and molecular weight 513.13 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution, Pigment Red 53:1 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 513.13 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | 2*C17H12ClN2O4S Ba |
| Molecular Weight | 513.13 g/mol |
| Purity | >90% |
| 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) | 12.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Pigment Standards
Recommended Standards
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- Cefetamet Impurity 2 (CAS CATO-C4X-12872)
- N,N-Dibutyl-2-(methylthio)-6-vinylpyrimidin-4-amine (CAS 823220-74-2)
- 5-Bromo-4-chloro-6-methylpyrimidin-2-amine (CAS 6314-12-1)
- 3,3-Bis(fluoromethyl)cyclopentan-1-amine (CAS 2167450-75-9)
- 2-(pyridin-3-yloxy)pyridine-4-carboximidamide hydrochloride (CAS 1221722-34-4)
- 3-Bromo-5-(1,1-difluoroethyl)isoxazole (CAS 1288978-08-4)
- [14-31]-Semaglutide (CAS CATO-C4X-2226262)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
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