Parecoxib sodium Impurity 9 CAS 1373038-56-2
| CAS No. | 1373038-56-2 |
| Molecular Formula | C16H14N2O3S |
| Molecular Weight | 314.36 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Parecoxib sodium Impurity 9 (CAS 1373038-56-2), a pharmacopoeial impurity reference standard (molecular formula C16H14N2O3S, MW 314.36 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Parecoxib sodium Impurity 9 (C16H14N2O3S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 314.36 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.
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.
Physical & Chemical Properties
| Molecular Formula | C16H14N2O3S |
| Molecular Weight | 314.36 g/mol |
| 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 |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Parecoxib Standards
- Parecoxib Impurity 15 (CAS 386273-25-2)
- Parecoxib Impurity 2 (CAS 181695-72-7)
- Parecoxib Impurity 3 (CAS CATO-C4X-15913)
- Parecoxib Impurity 32 (CAS 181696-12-8)
- Parecoxib Impurity 47 (CAS 181695-84-1)
- Parecoxib Impurity 51 (CAS 2304623-35-4)
- Parecoxib Impurity 52 (CAS 2304623-37-6)
- Parecoxib Impurity 6 (CAS CATO-C4X-15916)
Recommended Standards
- 4,5-Dibromo-2-chlorobenzoic acid (CAS CATO-C4X-20757)
- Benzbromarone Impurity 14 (CAS 77823-55-3)
- Benzbromarone Impurity 8 (CAS 27003-05-0)
- Sulfacarbamide Impurity 2 (CAS 526-08-9)
- Esmolol Impurity 12 (CAS 83356-60-9)
- Pemetrexed Impurity 58 (CAS CATO-C4X-172658)
- Avatrombopag Impurity 116 (CAS CATO-C4X-2234116)
- N-Phenyl-2-(dicyclohexylphosphino)pyrrole 672937-60-9 2-(DICYCLOHEXYLPHOSPHINO)-1-PHENYL-1H-PYRROLE;CATACXIUM(R) PCY;N-PHENYL-2-(DICYCLOHEXYLPHOSPHINO)PYRROLE SC11203 (CAS 672937-60-9)
- (1R,2R,3S)-1-amino-2,3-dimethylcyclopropanecarboxylic acid (CAS 116498-01-2)
- 6-Oxa-2-azaspiro[3.4]Octan-8-one (CAS 2306278-43-1)
- 4-Iodo-2-methoxy-6-nitroaniline (CAS 860466-44-0)
- [(2-Ethoxyphenyl)methyl](propyl)amine (CAS 869942-63-2)
- 3-Chloro-N,N-dimethyl-4-nitroaniline (CAS 17815-98-4)
- Tirzepatide Impurity 52 (CAS CATO-C4X-324052)
Why CATO?
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- 130,000+ catalog items in stock, COA supplied with every batch
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