Pyrimethamine Impurity 1 CAS 772-79-2
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 772-79-2 |
| Molecular Formula | C6H4Cl3O2P |
| Molecular Weight | 245.43 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Pyrimethamine Impurity 1 (CAS 772-79-2) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C6H4Cl3O2P. Molecular weight: 245.43 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C6H4Cl3O2P |
| Molecular Weight | 245.43 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 3.5 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Cl-containing |
Related Pyrimethamine Standards
- Pyrimethamine (CAS 58-14-0)
- Pyrimethamine EP Impurity D (CAS 55474-41-4)
- Pyrimethamine-D3 (CAS 1189936-99-9)
- Pyrimethamine Impurity 3 (CAS 3275-44-3)
- Pyrimethamine Impurity 4 (CAS 91284-15-0)
- Pyrimethamine N3-Oxide (CAS CATO-C4X-20441)
- Pyrimethamine EP Impurity A (CAS 55474-40-3)
- Pyrimethamine EP Impurity C (CAS 140-53-4)
Recommended Standards
- 2,2,2-Trichloro-2lambda5-benzo[d][1,3,2]dioxaphosphole (CAS 2007-97-8)
- 3,5-Dichloro-2,4-difluorobenzoylchloride (CAS 101513-72-8)
- (N-cyclohexylaminomethyl)methyldiethoxysilane (CAS 27445-54-1)
- Methyl 4-(1-aminoethyl)benzoate (CAS 80051-07-6)
- α-Desmethyl Anastrozole-d3 (CAS 1346601-01-1)
- 8-Methoxy-3-methylisochroman-1-one (CAS 30407-92-2)
- genipin-1-b-D-gentiobioside (CAS 29307-60-6)
- 3-(Pyridin-3-yl)-1,2,4-oxadiazole-5-carboxylic acid (CAS 1018655-00-9)
- 5-(4-Bromophenyl)-3,3-dimethylpentan-1-amine (CAS 1494130-22-1)
- D-Lys16-Tirzepatide (CAS CATO-CPTD788918)
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