4,6-Dichloro-2-(methylthio)pyrimidine-5-carbaldehyde oxime CAS 33097-12-0
| CAS No. | 33097-12-0 |
| Molecular Formula | C6H5Cl2N3OS |
| Molecular Weight | 238.09 g/mol |
| 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.
4,6-Dichloro-2-(methylthio)pyrimidine-5-carbaldehyde oxime (CAS 33097-12-0), molecular formula C6H5Cl2N3OS and molecular weight 238.09 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system, 4,6-Dichloro-2-(methylthio)pyrimidine-5-carbaldehyde oxime is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 238.09 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
Physical & Chemical Properties
| Molecular Formula | C6H5Cl2N3OS |
| Molecular Weight | 238.09 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1966 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Dichloro Standards
- (4,5-Dichloro-2-nitrophenyl)(methyl)sulfane (CAS 625120-05-0)
- 4,6-Dichloro-2-(methylthio)pyrimidine-5-carboxamide (CAS 313339-36-5)
- 2,4-Dichloro-7H-pyrrolo[2,3-h]quinazoline (CAS 1186401-17-1)
- 2,6-Dichloro-4-phenylaniline (CAS 134006-32-9)
- 1,4-Dichloro-5H-pyridazino[4,5-b]indole (CAS 80985-56-4)
- 2',4'-Dichloro-[1,1'-biphenyl]-2-amine (CAS 212138-75-5)
- 2',4'-Dichloro-[1,1'-biphenyl]-4-amine (CAS 939757-52-5)
- 2,4-dichloro-7-prop-1-ynyl-pyrido[3,2-d]pyrimidine (CAS 2528345-69-7)
Recommended Standards
- 3-Iodo-2,5-dimethylthiophene (CAS 40197-02-2)
- 2,2,3,3,4,4-Hexafluoropentanediamide (CAS 507-68-6)
- 4-Methoxy-1-methyl-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (CAS 2838106-20-8)
- 2-(2-Iodoethyl)thiophene (CAS 92138-63-1)
- 5-Bromo-3-hydrazinyl-2-methoxypyrazine (CAS 1334135-54-4)
- 3-(p-Tolyl)-1-oxa-2,4,8-triazaspiro[4.5]dec-2-ene (CAS 37143-31-0)
- 1-(2-Methyl-5,6,7,8-tetrahydroquinazolin-4-yl)pyrrolidin-3-amine (CAS 1710195-31-5)
- Fenpipramide (CAS 77-01-0)
- 3-chloro-4-methoxy-pyridazine (CAS 1677-81-2)
- n-(2,4-Dichlorobenzyl)-N-methylpiperidin-4-amine hydrochloride (CAS 1261234-75-6)
- 8-IOdo-imidazo[1,2-a]pyridine-6-carboxylic acid methyl ester (CAS 1823624-38-9)
- N-Methyl-N-(4-phenylpiperidin-4-yl)acetamide hydrochloride (CAS 188916-70-3)
- 2-Hydroxy-N-(4-(trifluoromethyl)phenyl)benzamide (CAS 42043-15-2)
- Tau Peptide (275-305) (Repeat 2 Domain) trifluoroacetate salt (CAS 330456-25-2)
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