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Clearsynth is a leading innovator in pharmaceutical reference standards, offering high-quality Reference Standards for Indigo Carmine, including both pharmacopeial and non-pharmacopeial impurities, metabolites, stable isotope products, and nitrosamines (N-NO products). Our Indigo Carmine 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 Indigo Carmine-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.

Indigo Carmine Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Indigo Carmine-d2 Stable Isotopes CS-O-58265 1208610-66-5 Enquire


API

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Indigo Carmine API CS-T-29273 860-22-0 In Stock


Impurity

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Indigo Carmine 5,7-Isomer Disodium Impurity CS-P-01487 27414-68-2 Enquire
Indigo Carmine Related Compound 1 Impurity CS-P-01486 27414-69-3 Enquire


Nitrosamine

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Indigo Carmine Nitroso Impurity 1 Nitrosamine CS-O-59161 ---- Enquire
Indigo carmine di nitroso impurity Nitrosamine CS-O-42516 Not Available Enquire
N-Nitroso Indigo carmine Nitrosamine CS-EO-01266 Not Available Enquire


Building Blocks

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Isatin-5-sulfonic acid sodium salt dihydrate Building Blocks CS-T-95898 207399-16-4 In Stock