Trimethoprim lactate salt CAS 23256-42-0
| CAS No. | 23256-42-0 |
| Molecular Formula | C14H18N4O3 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
Trimethoprim lactate salt (CAS 23256-42-0), molecular formula C14H18N4O3C3H6O3 and molecular weight 380.40 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, Trimethoprim lactate salt is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 380.40 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C14H18N4O3 C3H6O3 |
| Molecular Weight | 380.40 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
| Nitrogen Atoms | 4 |
Related Trimethoprim Standards
- Trimethoprim EP Impurity I (E-Isomer) (CAS 118791-61-0)
- Trimethoprim-d9 (CAS 1189460-62-5)
- Trimethoprim-d3 (CAS 1189923-38-3)
- Trimethoprim-13C3 (CAS 1189970-95-3)
- Trimethoprim Impurity 3 (CAS 14779-44-3)
- Trimethoprim Impurity 14 (CAS 154389-62-5)
- Trimethoprim EP Impurity F (CAS 16285-82-8)
- Trimethoprim EP Impurity H (CAS 1916-07-0)
Recommended Standards
- tert-butyl trans-4-(3-furyl)-3-hydroxy-piperidine-1-carboxylate (CAS 532991-48-3)
- 5-Hydrazinyl-4-methyl-1H-benzo[d]imidazole (CAS 739350-69-7)
- 2,3-Dihydroimidazo[1,2-b]isoquinolin-5(10H)-one (CAS 112521-56-9)
- Ethyl 3-bromo-1-(4-methoxybenzyl)-1H-1,2,4-triazole-5-carboxylate (CAS 2795110-31-3)
- 1,3,8-Triazaspiro[4.5]Dec-1-en-4-one (CAS 885032-18-8)
- (2S,3S)-2-Amino-3-methylsuccinic acid (CAS 6061-13-8)
- 2-(2,4-Difluorobenzenesulfonyl)-1-(4-ethoxyphenyl)ethan-1-one (CAS 1326877-00-2)
- Nalbuphine Hydrochloride Dihydrate - API Standards (CAS 59052-16-3)
- (2-Methyl-1,2,3,4-tetrahydroisoquinolin-6-yl)boronic acid (CAS 2408428-29-3)
- Semaglutide Impurity 157 (x TFA Salt) (CAS CATO-C4X-2226157)
Why CATO?
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