6-Methyl-2-(2-(propan-2-ylidene)hydrazinyl)pyrimidin-4(3H)-one CAS 66680-04-4
| CAS No. | 66680-04-4 |
| Molecular Formula | C21H28O2 |
| Molecular Weight | 312.45 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 6-Methyl-2-(2-(propan-2-ylidene)hydrazinyl)pyrimidin-4(3H)-one is closely related to a steroid core, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
6-Methyl-2-(2-(propan-2-ylidene)hydrazinyl)pyrimidin-4(3H)-one (CAS 66680-04-4), molecular formula C21H28O2 and molecular weight 312.45 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a steroid core, a hydroxyl group, an ether linkage, 6-Methyl-2-(2-(propan-2-ylidene)hydrazinyl)pyrimidin-4(3H)-one is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 312.45 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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.
Physical & Chemical Properties
| Molecular Formula | C21H28O2 |
| Molecular Weight | 312.45 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1976 |
Related Methyl Standards
- 2-Phenyl-4-[(propan-2-ylsulfanyl)methyl]-6-(pyrrolidin-1-yl)pyrimidine (CAS 338961-42-5)
- 3-Phenyl-2-(propan-2-ylsulfanyl)-6-(trifluoromethyl)-3,4-dihydropyrimidin-4-one (CAS 685107-82-8)
- 4-Phenyl-6-[(propan-2-yl)amino]-2-(pyridin-3-yl)pyrimidine-5-carbonitrile (CAS 320417-80-9)
- 4-Phenyl-6-[(propan-2-yl)amino]-2-(pyridin-4-yl)pyrimidine-5-carbonitrile (CAS 320417-90-1)
- 5-(Propan-2-ylidene)-2-(4-(o-tolyl)piperazin-1-yl)thiazol-4(5H)-one (CAS 326173-94-8)
- 5-(Propan-2-ylidene)-2-(4-(p-tolyl)piperazin-1-yl)thiazol-4(5H)-one (CAS 326174-42-9)
- (Z)-(Propan-2-yl N-(2,4-dichlorophenyl)pyridine-3-carboximidate) (CAS 74288-76-9)
- Propan-2-yl 2-(2-chloroacetamido)-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxylate (CAS 560080-98-0)
Recommended Standards
- 4,4'-(Oxybis(propane-3,1-diyl))bis(2,6-dimethylpyridine) (CAS 865074-42-6)
- 9β-Pregna-4,6-diene-3,20-dione (CAS 2640-38-2)
- 4,4'-(Nonane-2,2-diyl)diphenol (CAS 6807-18-7)
- Benzyl ((1H-indol-2-yl)methyl)carbamodithioate (CAS 917986-01-7)
- 4,6-Dichloro-1-(pyridin-2-yl)-1H-pyrazolo[3,4-d]pyrimidine (CAS 2060595-41-5)
- Methyl 5-(p-tolyl)-1,2,4-oxadiazole-3-carboxylate (CAS 173345-10-3)
- (1R,4R)-(S)-2-Amino-N-cyclopropyl-N-(4-dimethylamino-cyclohexyl)-3-methyl-butyramide (CAS 1353952-30-3)
- 2-Amino-3-hydroxy-2-phenylpropanoic acid (CAS 51196-55-5)
- Ethyl 8-amino-7-chloro-2,3-dihydrobenzo[b][1,4]dioxine-5-carboxylate (CAS 191024-17-6)
- Dantrolene USP Related Compound A (CAS 301359-05-7)
- 2-Bromo-1-(4-(4-bromo-1H-pyrazol-1-yl)phenyl)ethan-1-one (CAS 1227955-12-5)
- 2-(5-(Benzofuran-2-yl)isoxazol-3-yl)-N-(pyridin-4-ylmethyl)acetamide (CAS 1105244-49-2)
- Methoxyphenamine Impurity 4 (CAS CATO-C4X-23974)
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