Sulfasalazine EP Impurity E CAS 1391062-34-2
| CAS No. | 1391062-34-2 |
| Molecular Formula | C29H22N6O7S2 |
| Molecular Weight | 630.65 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 630.65 g/mol gives Sulfasalazine EP Impurity E distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies Sulfasalazine EP Impurity E (CAS 1391062-34-2), a pharmacopoeial impurity reference standard (molecular formula C29H22N6O7S2, MW 630.65 g/mol) used for the identification and quantification of trace impurities in APIs.
Sulfasalazine EP Impurity E (C29H22N6O7S2) contains a nitrogen-containing heterocyclic scaffold, 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. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
As a certified reference material (CRM), Sulfasalazine EP Impurity E meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C29H22N6O7S2 |
| Molecular Weight | 630.65 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) | 22.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Nitrogen Atoms | 6 |
| Sulfur Atoms | 2 |
Related Sulfasalazine Standards
- Sulfasalazine EP Impurity G (CAS 1391062-37-5)
- Sulfasalazine EP Impurity A (CAS 1391062-35-3)
- Sulfasalazine EP Impurity B (CAS 1391062-49-9)
- Sulfasalazine EP Impurity B (CAS 1391062-49-9（free base）)
- Sulfasalazine impurity 15 (CAS CATO-C4X-141915)
- Sulfasalazine Impurity 21 (CAS 2033064-44-5)
- Sulfasalazine Impurity 19 (CAS 2033064-46-7)
- Sulfasalazine Impurity 17 (CAS CATO-C4X-141917)
Recommended Standards
- 2,9-Bis(4-methoxybenzyl)anthra[2,1,9-def:6,5,10-d'e'f']diisoquinoline-1,3,8,10(2H,9H)-tetraone (CAS 83524-75-8)
- 2,9-Bis(4-ethoxyphenyl)anthra[2,1,9-def:6,5,10-d'e'f']diisoquinoline-1,3,8,10(2H,9H)-tetraone (CAS 24108-89-2)
- Bis(2-bromo-5-((tert-butyldimethylsilyl)oxy)phenyl)dimethylsilane (CAS 2410792-90-2)
- ((Phenylphosphanediyl)bis(2,1-phenylene))bis(diphenylphosphane) (CAS 53103-03-0)
- Iopromide EP Impurity D (Mixture of Diastereomers) (CAS 154361-55-4)
- Resmetirom impurity 15 (CAS 920509-35-9)
- Palbociclib Impurity 68 (CAS 2444702-87-6)
- Methyl 6-phenoxynicotinate (CAS 595576-44-6)
- 6-Ethyl-6-methyl-1,3,5-triazinane-2,4-dione (CAS 142528-74-3)
- tert-Butyl 2-(4-(4-hydrazinyl-4-oxobutyl)phenoxy)-2-methylpropanoate (CAS 425672-62-4)
- 3-(1,3-Dioxo-3,4-dihydroisoquinolin-2(1H)-yl)propanoic Acid (CAS 75513-35-8)
- Methyl 2-chloro-3-iodo-4-methylbenzoate (CAS 914643-09-7)
- Sodium 2-(pyrrolidin-1-yl)thiazole-4-carboxylate (CAS 1401425-87-3)
- Tirzepatide Impurity 33 (CAS CATO-C4X-324033)
Why CATO?
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- 130,000+ catalog items in stock, COA supplied with every batch
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