Trimethoprim-d9 CAS 1189460-62-5
| CAS No. | 1189460-62-5 |
| Molecular Formula | - |
| Molecular Weight | 299.37 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO supplies Trimethoprim-d9 (CAS 1189460-62-5), a certified reference material (molecular formula C14H9D9N4O3, MW 299.37 g/mol) for analytical method development and quality control.
Trimethoprim-d9 (C14H9D9N4O3) contains deuterium isotope labeling, a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C14H9D9N4O3 |
| Molecular Weight | 299.37 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 12.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Nitrogen Atoms | 4 |
Related Trimethoprim Standards
- Trimethoprim EP Impurity B (CAS 30806-86-1)
- Trimethoprim EP Impurity A (CAS 213745-86-9)
- Trimethoprim Impurity 12 (CAS 92653-78-6)
- Trimethoprim EP Impurity G (CAS 78025-68-0)
- Trimethoprim-d3 (CAS 1189923-38-3)
- Trimethoprim-13C3 (CAS 1189970-95-3)
- Trimethoprim N-Oxide 1 (CAS 27653-68-5)
- Trimethoprim N-Oxide 3 (CAS 27653-67-4)
Recommended Standards
- Mesilate EP Impurity A (CAS 2724727-52-8)
- H-Leu-Ala-Pro-OH (CAS 132548-09-5)
- Lumateperone Impurity 66 (CAS CATO-C4X-220166)
- Cyclo(-Leu-Trp) (CAS 15136-34-2)
- 2-((Bromodifluoromethyl)sulfonyl)benzo[d]thiazole (CAS 1230154-56-9)
- 4-Amino-4-(trifluoromethyl)cyclohexan-1-ol (CAS 1334146-32-5)
- (S)-1-(4-Nitrophenyl)-2-(trifluoromethyl)-piperidine (CAS 1416348-87-2)
- Ampicillin Impurity 101 (CAS CATO-C4X-1443101)
- Amorolfine Impurity 83 (CAS CATO-C4X-154283)
- 4,5,6,7-Tetrafluoroindoline (CAS 19282-55-4)
- BRL 37344 Sodium (CAS 127299-93-8)
- 2-Hydroxyphenyl 3-methoxybenzoate (CAS 5876-99-3)
- Dimethyl Ether/HF Complex (CAS 445494-65-5)
- Pancreatic Polypeptide (bovine) (CAS 179986-89-1)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com