Clearsynth is a leading innovator in pharmaceutical reference standards, offering high-quality Reference Standards for Indigo, including both pharmacopeial and non-pharmacopeial impurities, metabolites, stable isotope products, and nitrosamines (N-NO products). Our Indigo 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-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.
Our Indigo-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 Related Compounds
Stable Isotopes
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| Indigo Carmine-d2 | Stable Isotopes | CS-O-58265 | 1208610-66-5 | Enquire |
| Indigo-D8 | Stable Isotopes | CS-T-103310 | 479-41-4(unlabelled) | Enquire |
| Indigo-D8 (major) | Stable Isotopes | CS-F-00235 | 482-89-3 (unlabelled) | Enquire |
| Indigopurpurin-d4 | Stable Isotopes | CS-T-103703 | 479-41-4(unlabelled) | Enquire |
| N,N’-Diisopropyl-5,6,5’,6’-tetrahydroxy Indigo-d14 | Stable Isotopes | CS-T-100433 | Not Available | Enquire |
API
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| Indigo Carmine | API | CS-T-29273 | 860-22-0 | In Stock |
| Indigotindisulfonate | API | CS-ED-41927 | 483-20-5 | Enquire |
| Isoindigo | API | CS-T-29750 | 476-34-6 | Enquire |
Impurity
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| 3-Hydroxy-1H-indole-2-carboxaldehyde | Impurity | CS-O-56313 | 172984-51-9 | Enquire |
| 5-Hydroxy-1H-indole-3-carbaldehyde | Impurity | CS-O-56354 | 3414-19-5 | Enquire |
| Indigo Carmine 5,7-Isomer Disodium | Impurity | CS-P-01487 | 27414-68-2 | Enquire |
| Indigotindisulfonate Impurity C | Impurity | CS-O-59156 | 7313-70-4 | Enquire |
| Indigotindisulfonate Impurity D | Impurity | CS-O-59159 | 767607-23-8 | Enquire |
| 5,5’,6,6’-Tetrakis(methoxymethoxy)-indigotin | Impurity | CS-T-86226 | 858230-17-8 | Enquire |
| 7,7'-Bis(4-bromobenzoyl) Isoindigo | Impurity | CS-O-15557 | 1798431-98-7 | Enquire |
| Indigo Carmine Related Compound 1 | Impurity | CS-P-01486 | 27414-69-3 | Enquire |
| Indigopurpurin | Impurity | CS-T-29274 | 479-41-4 | Enquire |
Intermediate
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| Trisodium indigo-5,5',7'-trisulfonate | Intermediate | CS-ED-42252 | 95713-40-9 | 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 |