Active ingredientIndometacinCat. No. P-I045-001CAS 53-86-1
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Impurity or related compound · Indometacin family
Pharmaceutical analytical standardSodium 4-methoxyphenyldiazosulfonate
Synonyms: sodium N-(4-methoxyphenyl)iminosulfamate, Indomethacin impurity, Sodium p-methoxybenzenediazosulfonate, Indometacin Impurity 39 Sodium Salt, Sodium p-methoxybenzenediazosulfonate, (Z)-, p-Methoxydiazobenzenesulfonic acid sodium salt, p-Methoxybenzenediazosulfonic acid, sodium salt, Benzenediazosulfonic acid, p-methoxy-, sodium salt, Diazenesulfonic acid, (4-methoxyphenyl)-, sodium salt, Diazenesulfonic acid, (4-methoxyphenyl)-, sodium salt, (E)-, Diazenesulfonic acid, (4-methoxyphenyl)-, sodium salt, (Z)-
- Cat. No.
- P-I045-050
- CAS
- 5354-81-4
- Alternative CAS
- 791017-24-8 (free acid)
- 15763-60-7 (free acid)
- 85518-82-7 (alternative CAS, same compound)
- Formula
- C7H7N2NaO4S
- Molecular weight
- 238.19 g/mol
- Category
- Impurity or related compound
Family: Indometacin
A non-steroidal anti-inflammatory drug derived from indoleacetic acid, introduced in the 1960s and used for arthritis, acute gout and other inflammatory pain.
Did you know?It also has a special use in premature babies: it helps close the ductus arteriosus, a blood vessel of the foetal circulation that should close by itself after birth.
The two levels compared
| Level 1 Mass balance | Level 2 Mass balance + qNMR | |
|---|---|---|
| Identity (IR, MS, 1H and 13C-NMR; peptides: ESI-MS, MALDI-TOF and IR) | ✓ | ✓ |
| HPLC purity (min. 95%) | ✓ | ✓ |
| Content by mass balance (min. 90%; peptides: for information only)* | ✓ | ✓ |
| Content verified by qNMR (small molecules only) | · | ✓ |
| Suitable to qualify it as an in-house primary standard (ICH Q7) | · | ✓ |
* Mass balance is performed on every molecule. The only exceptions are cases where the chemistry of the molecule prevents it, for example oils and highly volatile substances, on which some of the required measurements cannot be made: in those cases the CoA states how the content was assigned.
What you receive
The analytical standard
Shipped under controlled temperature when the molecule requires it.
Certificate of analysis (CoA)
For every lot: identity, purity and assay, with the supporting spectra and chromatograms.
Safety data sheet (SDS)
Sent with every order.
Tracked shipment
Follow your shipment live, from our warehouse to your lab.
More products in the Indometacin family
Active ingredientIndometacinCat. No. P-I045-001CAS 53-86-1
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Pharmacopoeial impurityIndomethacin EP Impurity DCat. No. P-I045-004
Pharmacopoeial impurityIndomethacin EP Impurity ECat. No. P-I045-005CAS 807614-94-4
Pharmacopoeial impurityIndomethacin EP Impurity FCat. No. P-I045-006CAS 402849-27-8
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Pharmacopoeial impurityIndomethacin EP Impurity HCat. No. P-I045-008CAS 1601-18-9Frequently asked questions
Is mass balance always performed?
Yes, on every molecule. The only exceptions are cases where the chemistry of the molecule prevents it: for example oils and highly volatile substances, on which some measurements (such as thermogravimetry) cannot be made. In those cases the CoA states which method was used to assign the content.
Can I ask for a different quantity?
Yes. The quantities are only suggestions: choose "Other" and enter the milligrams or grams you need.
Which level should I choose?
Level 1 is enough for most routine testing. Level 2 adds an independent qNMR content value and is meant for labs that need to qualify an in-house primary standard. For peptides and similar molecules, Level 2 is not available.
When will I get the quote?
Within 24 working hours, with price, availability and delivery time.
Need a molecule you cannot find?
Custom synthesis of impurities, metabolites and labelled compounds, with the same characterisation level.