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Parecoxib is a nonsteroidal anti-inflammatory drug (NSAID) that selectively inhibits cyclooxygenase-2 (COX-2), an enzyme involved in pain and inflammation. It is typically used for short-term pain management, especially after surgery. Parecoxib is administered via injection and is converted in the body to valdecoxib, its active form.
Cleanchem is a trusted provider of premium pharmaceutical reference materials, specializing in Parecoxib and its associated compounds. Our catalog includes pharmacopeial and non-pharmacopeial Parecoxib impurities, metabolites, nitrosamine derivatives (N-NO compounds), and stable isotope-labeled products. These reference standards play a critical role in pharmaceutical R&D, supporting activities such as product formulation, ANDA and DMF submissions, quality assurance, analytical method development, and stability assessments.
All Parecoxib-related substances undergo comprehensive characterization and are delivered with complete Certificates of Analysis and supporting analytical documentation to ensure regulatory adherence. Upon request, we can offer EP/USP traceable standards. Our products are routinely re-evaluated to maintain consistent quality and performance.

CAT No: CL-PRXB-01
CAS No: 198470-84-7
Mol Wt: 370.4
Mol F: C19H18N2O4S
Inv Status:Custom Synthesis
CAT No: CL-PRXB-02
CAS No:  198470-85-8
Mol Wt: 370.4 : 23.0
Mol F: C19H18N2O4S : Na
Inv Status:Custom Synthesis
CAT No: CL-PRXB-03
CAS No: 
Mol Wt: 386.4
Mol F: C19H18N2O5S
Inv Status:Custom Synthesis
CAT No: CL-PRXB-04
CAS No:  1708094-99-8
Mol Wt: 505.6
Mol F: C22H23N3O7S2
Inv Status:Custom Synthesis
CAT No: CL-PRXB-05
CAS No: 451-40-1
Mol Wt: 196.3
Mol F: C14H12O
Inv Status:Custom Synthesis
CAT No: CL-PRXB-06
CAS No: 
Mol Wt: 314.4
Mol F: C16H14N2O3S
Inv Status:Custom Synthesis
CAT No: CL-PRXB-07
CAS No: 1373038-59-5
Mol Wt: 393.4
Mol F: C16H15N3O5S2
Inv Status:Custom Synthesis
CAT No: CL-PRXB-08
CAS No: 198471-06-6
Mol Wt: 356.4
Mol F: C18H16N2O4S
Inv Status:Custom Synthesis
CAT No: CL-PRXB-09
CAS No: 198470-92-7
Mol Wt: 384.5 : 23.0
Mol F: C20H20N2O4S : Na
Inv Status:Custom Synthesis
CAT No: CL-PRXB-10
CAS No:  501093-49-8
Mol Wt: 330.4
Mol F: C16H14N2O4S
Inv Status:Custom Synthesis
CAT No: CL-PRXB-11
CAS No: 181696-35-5
Mol Wt: 315.4
Mol F: C16H13NO4S
Inv Status:Custom Synthesis
CAT No: CL-PRXB-12
CAS No: NA
Mol Wt: 346.4
Mol F: C17H18N2O4S
Inv Status:Custom Synthesis
CAT No: CL-PRXB-13
CAS No: 181695-72-7
Mol Wt: 314.4
Mol F: C16H14N2O3S
Inv Status:Custom Synthesis
CAT No: CL-PRXB-14
CAS No: 181696-12-8
Mol Wt: 314.4
Mol F: C16H14N2O3S
Inv Status:Custom Synthesis
CAT No: CL-PRXB-15
CAS No: 198470-84-7
Mol Wt: 370.42
Mol F: C19H18N2O4S
Inv Status:Custom Synthesis
CAT No: CL-PRXB-16
CAS No: NA
Mol Wt: 395.4
Mol F: C16H13NO7S2
Inv Status:Custom Synthesis
CAT No: CL-PRXB-17
CAS No: 26306-06-9
Mol Wt: 211.3
Mol F: C14H13NO
Inv Status:Custom Synthesis
CAT No: CL-PRXB-18
CAS No: 1884279-18-8
Mol Wt: 343.4
Mol F: C18H17NO4S
Inv Status:Custom Synthesis
CAT No: CL-PRXB-19
CAS No: NA
Mol Wt: 253.3
Mol F: C16H15NO2
Inv Status:Custom Synthesis
CAT No: CL-PRXB-20
CAS No: 2338845-31-9
Mol Wt: 532.6
Mol F: C32H24N2O4S
Inv Status:Custom Synthesis
CAT No: CL-PRXB-21
CAS No: 386273-25-2
Mol Wt: 314.4
Mol F: C16H14N2O3S
Inv Status:Custom Synthesis
CAT No: CL-PRXB-22
CAS No: NA
Mol Wt: 369.4 : 23.0
Mol F: C19H17N2O4S : Na
Inv Status:Custom Synthesis
CAT No: CL-PRXB-23
CAS No: NA
Mol Wt: 314.4
Mol F: C16H14N2O3S
Inv Status:Custom Synthesis
CAT No: CL-PRXB-24
CAS No: 37928-17-9
Mol Wt: 235.3
Mol F: C16H13NO
Inv Status:Custom Synthesis
CAT No: CL-PRXB-25
CAS No: 1709956-89-7
Mol Wt: 370.4
Mol F: C19H18N2O4S
Inv Status:Custom Synthesis
CAT No: CL-PRXB-26
CAS No: 181696-73-1
Mol Wt: 253.3
Mol F: C16H15NO2
Inv Status:Custom Synthesis
CAT No: CL-PRXB-27
CAS No: 1373038-60-8
Mol Wt: 611.7
Mol F: C32H25N3O6S2
Inv Status:Custom Synthesis
CAT No: CL-PRXB-28
CAS No: 198471-07-7
Mol Wt: 356.4 : 23.0
Mol F: C18H16N2O4S : Na
Inv Status:Custom Synthesis
CAT No: CL-PRXB-29
CAS No: 2235371-89-6
Mol Wt: 370.4
Mol F: C19H18N2O4S
Inv Status:Custom Synthesis
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