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Cleanchem is a trusted provider of premium pharmaceutical reference materials, specializing in Dithranol and its associated compounds. Our catalog includes pharmacopeial and non-pharmacopeial Dithranol 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 Dithranol-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.

Dithranol
CAT No: CL-DTHR-01 CAS No: 1143-38-0 Mol Wt: 226.2 Mol F: C14H10O3 Inv Status: Custom Synthesis
Chemical Name: 1,8-Dihydroxyanthracen-9(10H)-one
Dithranol EP Impurity A
CAT No: CL-DTHR-02 CAS No: 90-44-8 Mol Wt: 194.2 Mol F: C14H10O Inv Status: Custom Synthesis
Chemical Name: Anthracen-9(10H)-one
Dithranol EP Impurity B
CAT No: CL-DTHR-03 CAS No: 117-10-2 Mol Wt: 240.2 Mol F: C14H8O4 Inv Status: Custom Synthesis
Chemical Name: 1,8-Dihydroxyanthracene-9,10-dione
Dithranol EP Impurity C
CAT No: CL-DTHR-04 CAS No: 31991-54-5 Mol Wt: 450.4 Mol F: C28H18O6 Inv Status: Custom Synthesis
Chemical Name: 4,4?,5,5?-Tetrahydroxy-9,9?-bianthracenyl-10,10?(9H,9?H)-dione
Dithranol EP Impurity D
CAT No: CL-DTHR-05 CAS No: 1715-81-7 Mol Wt: 210.2 Mol F: C14H10O2 Inv Status: Custom Synthesis
Chemical Name: 1-Hydroxyanthracen-9(10H)-one
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