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Clearsynth is a leading innovator in pharmaceutical reference standards, offering high-quality Reference Standards for Phenylbutazone, including both pharmacopeial and non-pharmacopeial impurities, metabolites, stable isotope products, and nitrosamines (N-NO products). Our Phenylbutazone impurity reference standards are invaluable for pharmaceutical research, supporting product development, ANDA and DMF submissions, quality control (QC), method validation, and stability studies. They also aid in identifying unknown impurities and assessing genotoxic potential.
Our Phenylbutazone-related products undergo thorough characterization and are supplied with detailed Certificates of Analysis (COA) and analytical data that meet regulatory requirements. All supplied products are re-tested at regular intervals to ensure ongoing quality and compliance.

Phenylbutazone Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
4-Hydroxy Phenylbutazone D9 Stable Isotopes CS-T-55953 1246819-23-7 Enquire
Phenylbutazone 13C12 Stable Isotopes CS-W-00260 Not Available Enquire
Phenylbutazone(diphenyl-d10) Stable Isotopes CS-T-84091 1219794-69-0 In Stock
Phenylbutazone-d9 Stable Isotopes CS-T-84385 1189479-75-1 Enquire
γ-Hydroxy Phenylbutazone-d6 Stable Isotopes CS-T-79742 1794789-70-0 Enquire


API Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Phenylbutazone API Standards CS-O-30729 50-33-9 In Stock


Impurities

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Benzidine dihydrochloride Impurities CS-BX-00904 531-85-1 In Stock
Phenylbutazone EP Impurity A Impurities CS-O-13789 Not Available Enquire


Intermediates

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
γ-Hydroxy Phenylbutazone Intermediates CS-T-55954 568-76-3 Enquire


Fine Chemicals

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
4-Hydroxyphenylbutazone Fine Chemicals CS-ZG-80621 16860-43-8 Enquire