C.I. Pigment Red 48 CAS 7023-61-2
| CAS No. | 7023-61-2 |
| Molecular Formula | C18H11ClN2O6S |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, C.I. Pigment Red 48 (C18H11ClN2O6SCa) contains a salt form, a flavonoid core, an amide group, a sulfone 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 458.88 g/mol, it falls into the moderately-high-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
C.I. Pigment Red 48 (CAS 7023-61-2), molecular formula C18H11ClN2O6SCa and molecular weight 458.88 g/mol, is a CATO reference standard with documented purity and traceability.
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 | C18H11ClN2O6S Ca |
| Molecular Weight | 458.88 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; 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.) | 1959 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Recommended Standards
- 2-(Chloromethyl)-3-((trifluoromethyl)thio)pyridine (CAS 2386232-44-4)
- 2-{5,6-dimethyl-4-oxo-3h,4h-thieno[2,3-d]pyrimidin-2-yl}acetohydrazide (CAS 561009-01-6)
- 2-(1-Methyl-2-oxoindolin-5-yl)-2-oxoacetic Acid (CAS 1152495-80-1)
- Apremilast Impurity 113 (CAS CATO-C4X-1009113)
- 3-(2-Methylpyrrolidin-1-yl)propan-1-amine (CAS 904677-81-2)
- Ethyl 2-({7-hydroxy-3-[(4-methoxyphenyl)carbamoyl]-2H-chromen-2-ylidene}amino)-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxylate (CAS 330663-43-9)
- (1-(2-Hydroxyethyl)-3-phenyl-1H-pyrazolo[3,4-b]pyridin-5-yl)(2-hydroxyphenyl)methanone (CAS 796053-09-3)
- 5-Amino-1-(3,5-dimethylphenyl)-1H-pyrazole-4-carboxamide (CAS 1006597-08-5)
- ethyl 1-(fluoromethyl)-4-oxocyclohexane-1-carboxylate (CAS 1818868-39-1)
- Semaglutide Impurity 6 (CAS 62-57-7)
Why CATO?
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