Active ingredientSulfamethoxazoleCat. No. P-S111-001CAS 723-46-6
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Stable isotope labelled · Sulfamethoxazole family
Pharmaceutical analytical standardSulfamethoxazole-d4
Synonyms: Sulfamethoxazole D4 (benzene D4), Sulfamethoxazole D4 (benzene D4) 100 microg/mL in Acetonitrile
- Cat. No.
- P-S111-009
- CAS
- 1020719-86-1
- Alternative CAS
- 723-46-6 (unlabelled form)
- 2702538-04-1 (alternative CAS, same compound)
- Formula
- C10H7D4N3O3S
- Molecular weight
- 257.30 g/mol
- Category
- Stable isotope labelled
Family: Sulfamethoxazole
A sulfonamide antibiotic introduced in the United States in 1961, used mainly in combination with trimethoprim (co-trimoxazole) for urinary, respiratory and Pneumocystis infections.
Did you know?The two drugs in co-trimoxazole block two consecutive steps of the same pathway that bacteria use to make folic acid: a double block designed to strengthen the effect of both.
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 Sulfamethoxazole family
Active ingredientSulfamethoxazoleCat. No. P-S111-001CAS 723-46-6
Pharmacopoeial impuritySulfamethoxazole EP Impurity FCat. No. P-S111-002CAS 17103-52-5
Pharmacopoeial impuritySulfamethoxazole EP Impurity ACat. No. P-S111-003CAS 21312-10-7
Pharmacopoeial impuritySulfamethoxazole EP Impurity BCat. No. P-S111-004CAS 135529-16-7
Pharmacopoeial impuritySulfamethoxazole EP Impurity CCat. No. P-S111-005CAS 1072-67-9
Isotopically labelledSulfamethoxazole EP Impurity A-d4Cat. No. P-S111-006CAS 1215530-54-3
Isotopically labelledSulfamethoxazole Impurity 3-d4Cat. No. P-S111-007
Isotopically labelledSulfamethoxazole-(phenyl-13C6)Cat. No. P-S111-008CAS 1196157-90-0Frequently 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.