5,6-Dichloro-3-methylpyrimidin-4(3H)-one CAS 55609-71-7
| CAS No. | 55609-71-7 |
| Molecular Formula | C5H4Cl2N2O |
| Molecular Weight | 179.00 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to an amide group, a hydroxyl group, an ether linkage, chlorine substitution, 5,6-Dichloro-3-methylpyrimidin-4(3H)-one is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 179.00 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).
5,6-Dichloro-3-methylpyrimidin-4(3H)-one (CAS 55609-71-7), molecular formula C5H4Cl2N2O and molecular weight 179.00 g/mol, is a CATO reference standard with documented purity and traceability.
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.
CATO manufactures 5,6-Dichloro-3-methylpyrimidin-4(3H)-one under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C5H4Cl2N2O |
| Molecular Weight | 179.00 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| 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) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1972 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Dichloro Standards
- 5,6-Dichloro-1-methylpyrimidin-4(1H)-one (CAS 101912-72-5)
- 4,6-Dichloro-2-methoxypyrimidine (CAS 1074-40-4)
- 4,6-Dichloro-3-methoxypyridazine (CAS 112342-58-2)
- 3,4-Dichloro-6-methoxypyridazine (CAS 112342-59-3)
- 2,4-Dichloro-1-methyl-1H-imidazole-5-carbaldehyde (CAS 1240526-82-2)
- 4,5-Dichloro-2-methoxypyrimidine (CAS 1240601-33-5)
- 3,5-dichloro-2-methoxypyrazine (CAS 1430460-52-8)
- 2,2-Dichloro-1-(1H-pyrazol-1-yl)ethanone (CAS 39671-63-1)
Recommended Standards
- 5,6-Dichloro-2-methylpyrimidin-4-ol (CAS 32265-50-2)
- 5-Chloro-6-(chloromethyl)pyrimidin-4(3H)-one (CAS 792909-14-9)
- 5,6-Dichloro-2-methylpyridazin-3(2H)-one (CAS 6794-35-0)
- 6-Chloro-2-(chloromethyl)pyrimidin-4(3H)-one (CAS 19874-98-7)
- Methyl 2-[3-(aminomethyl)cyclobutyl]acetate (CAS 1638920-26-9)
- 1-(4-Fluorophenyl)-3-(p-tolylthio)propan-1-one (CAS 892154-97-1)
- 2-Chloro-1-(2-morpholinothiazol-5-yl)ethan-1-one (CAS 373602-89-2)
- 2,2-difluorocyclopentanone (CAS 2167972-33-8)
- Quinapril EP Impurity D (CAS 103733-49-9)
- 3-Thiomorpholinopropanenitrile (CAS 887570-93-6)
- 5231-60-7 Z1DB4ZMV5D Demethoxyvindoline Aspidospermidine-3-carboxylic acid, 4-(acetyloxy)-6,7-didehydro-3-hydroxy-1-methyl-, methyl ester, (2beta,3beta,4beta,5alpha,12beta,19alpha)- (9CI) 1H-Indolizino(8,1-cd)carbazole-5-carboxylic acid, 3a-ethyl-3a,4,5,5a,6,11,12,13a-octahydro-4,5-dihydroxy-6-methyl-, methyl ester, 4-acetate NSC 94038 Vindolidin Vindorosine UNII-Z1DB4ZMV5D (CAS 5231-60-7)
- (1-((1-Propyl-1h-tetrazol-5-yl)methyl)piperidin-4-yl)methanol (CAS 1311709-25-7)
- (1-(2-Methylpentyl)cyclopropyl)methanol (CAS 1498711-83-3)
- C-telopeptide (CAS 162929-64-8)
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