Pyrimethamine-D3 CAS 1189936-99-9
| CAS No. | 1189936-99-9 |
| Molecular Formula | - |
| Molecular Weight | 251.73 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 251.73 g/mol gives Pyrimethamine-D3 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies Pyrimethamine-D3 (CAS 1189936-99-9), a certified reference material (molecular formula C12H10D3ClN4, MW 251.73 g/mol) for analytical method development and quality control.
Pyrimethamine-D3 (C12H10D3ClN4) contains deuterium isotope labeling, a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine substitution. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), Pyrimethamine-D3 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C12H10D3ClN4 |
| Molecular Weight | 251.73 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 9.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
Related Pyrimethamine Standards
- Pyrimethamine EP Impurity D (CAS 55474-41-4)
- Pyrimethamine (CAS 58-14-0)
- Pyrimethamine Impurity 1 (CAS 772-79-2)
- Pyrimethamine Impurity 4 (CAS 91284-15-0)
- Pyrimethamine N3-Oxide (CAS CATO-C4X-20441)
- Pyrimethamine Impurity 3 (CAS 3275-44-3)
- Pyrimethamine EP Impurity A (CAS 55474-40-3)
- Pyrimethamine EP Impurity C (CAS 140-53-4)
Recommended Standards
- (2-Amino-5-methylthiophen-3-yl)(2-chlorophenyl)methanone (CAS 50508-57-1)
- 5-(6-Chloropyridazin-3-yl)-4,5,6,7-tetrahydrothieno[3,2-c]pyridine (CAS 1094223-56-9)
- 0797AE 338982-34-6 C12H10ClNOS {2-[(2-Chlorophenyl)sulfanyl]-3-pyridinyl}methanol (CAS 338982-34-6)
- 3-Chloro-4-(3,4-dihydroisoquinolin-2(1H)-yl)-1,2,5-thiadiazole (CAS 1156936-20-7)
- 6-(3-Aminophenyl)-2-(isopropylamino)quinazolin-7-ol (CAS 914395-75-8)
- 2-Hydrazinyl-5-methyl-1H-benzo[d]imidazole (CAS 93102-21-7)
- 4-Bromo-2-propyl-7-(trifluoromethoxy)quinoline (CAS 1189106-77-1)
- (S)-(-)-2-amino-3-methyl-1,1-diphenylbutane (CAS 233772-37-7)
- 3-Phenyloxiranecarboxylic acid ethyl ester (CAS 121-39-1)
- H-D-HoTyr-OH·Hydrobromide (CAS 185617-14-5)
- Esmolol Impurity 25 (CAS CATO-C4X-189125)
- 1-(5,6-Bis(4-chlorophenyl)-1,2,4-triazin-3-yl)piperidin-4-ol (CAS 88300-20-3)
- N-Fmoc-L-Phe(3-OCF3)-OH (CAS 1260592-32-2)
- Glucagon Monohydrochloride (CAS 28270-04-4)
Why CATO?
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