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Indigo Carmine Related Products


SynZeal is a leading innovator in pharmaceutical reference standards. We supply high-quality Reference Standards of Indigo Carmine, pharmacopeial and non-pharmacopeial Indigo Carmine impurities, metabolites, stable isotope products, and nitrosamines (N-NO products). Indigo Carmine impurities reference standards are useful in pharmaceutical research. They are useful in product development, ANDA and DMF filing, quality control (QC), method validation, and stability studies. It is also useful in the identification of unknown impurities and the assessment of genotoxic potential.

Indigo Carmine-related products are thoroughly characterized. Indigo Carmine products are supplied with detailed COA & analytical data meeting regulatory compliance. We can also provide EP/USP traceable standards based on your requirements. The supplied products are re-tested at regular intervals.

Pharmaceutical Reference Standards

Indigo Carmine

Picture of Indigo Carmine
SZ CAT No:: SZ-I072001
CAS No: 860-22-0
Mol.F.: C16H8N2O8S2 : 2(Na)
Mol.Wt.: 420.4 : 2(23.0)
Inv. Status: In Stock

Indigo Carmine 5,7’-Isomer

Picture of Indigo Carmine 5,7’-Isomer
SZ CAT No:: SZ-I072002
CAS No: 27414-68-2
Mol.F.: C16H8N2O8S2 : 2(Na)
Mol.Wt.: 420.4 : 2(23.0)
Inv. Status: Custom Synthesis

Indigo Carmine Impurity 1

Picture of Indigo Carmine Impurity 1
SZ CAT No:: SZ-I072003
CAS No: 27414-69-3
Mol.F.: C16H9N2O5S : Na
Mol.Wt.: 341.3 : 23.0
Inv. Status: Custom Synthesis

Isatin-5-Sulfonic Acid Sodium Salt Dihydrate

Picture of Isatin-5-Sulfonic Acid Sodium Salt Dihydrate
SZ CAT No:: SZ-I072004
CAS No: 207399-16-4
Mol.F.: C8H5NO5S : Na : 2(H2O)
Mol.Wt.: 227.2 : 23.0 : 2(18.0)
Inv. Status: Custom Synthesis

Possible Nitroso Standards

Indigo Carmine Nitroso Impurity 1

Picture of Indigo Carmine Nitroso Impurity 1
SZ CAT No:: SZ-I072006
CAS No: NA
Mol.F.: C16H7N3O9S2 : 2(Na)
Mol.Wt.: 449.4 : 2(23.0)
Inv. Status: Inquire

Indigo Carmine Nitroso Impurity 2

Picture of Indigo Carmine Nitroso Impurity 2
SZ CAT No:: SZ-I072007
CAS No: NA
Mol.F.: C16H6N4O10S2 : 2(Na)
Mol.Wt.: 478.4 : 2(23.0)
Inv. Status: Inquire

N-Nitroso Indigo carmine

Picture of N-Nitroso Indigo carmine
SZ CAT No:: SZ-I072005
CAS No: NA
Mol.F.: C16H7N3O9S2 : 2Na
Mol.Wt.: 449.4 : 2(23.0)
Inv. Status: Inquire
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