2-[4-(5-Methyl-1,2,4-oxadiazol-3-yl)-1,3-dioxo-1H,2H,3H,5H,6H,7H,8H,9H-pyrimido[1,6-a]azepin-2-yl]-N-[(thiophen-2-yl)methyl]acetamide CAS 1775338-51-6
| CAS No. | 1775338-51-6 |
| Molecular Formula | C19H21N5O4S |
| Molecular Weight | 415.47 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 2-[4-(5-Methyl-1,2,4-oxadiazol-3-yl)-1,3-dioxo-1H,2H,3H,5H,6H,7H,8H,9H-pyrimido[1,6-a]azepin-2-yl]-N-[(thiophen-2-yl)methyl]acetamide is closely related to a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
2-[4-(5-Methyl-1,2,4-oxadiazol-3-yl)-1,3-dioxo-1H,2H,3H,5H,6H,7H,8H,9H-pyrimido[1,6-a]azepin-2-yl]-N-[(thiophen-2-yl)methyl]acetamide (CAS 1775338-51-6), molecular formula C19H21N5O4S and molecular weight 415.47 g/mol, is a CATO reference standard with documented purity and traceability.
2-[4-(5-Methyl-1,2,4-oxadiazol-3-yl)-1,3-dioxo-1H,2H,3H,5H,6H,7H,8H,9H-pyrimido[1,6-a]azepin-2-yl]-N-[(thiophen-2-yl)methyl]acetamide (C19H21N5O4S) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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), 2-[4-(5-Methyl-1,2,4-oxadiazol-3-yl)-1,3-dioxo-1H,2H,3H,5H,6H,7H,8H,9H-pyrimido[1,6-a]azepin-2-yl]-N-[(thiophen-2-yl)methyl]acetamide 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 | C19H21N5O4S |
| Molecular Weight | 415.47 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1994 |
| Nitrogen Atoms | 5 |
| Sulfur Atoms | 1 |
Related Methyl Standards
- 2-[4-(5-Ethyl-1,2,4-oxadiazol-3-yl)-1,3-dioxo-1H,2H,3H,5H,6H,7H,8H-pyrido[1,2-c]pyrimidin-2-yl]-N-[(thiophen-2-yl)methyl]acetamide (CAS 1775336-45-2)
- 2-((5-Phenyl-1,3,4-oxadiazol-2-yl)thio)-N-(2,4,6-trichlorophenyl)acetamide (CAS 333777-94-9)
- 4-(5-Ethyl-1,2,4-oxadiazol-3-yl)-2-[3-(4-fluorophenoxy)propyl]-1H,2H,3H,5H,6H,7H,8H-pyrido[1,2-c]pyrimidine-1,3-dione (CAS 1775345-18-0)
- 1-((5-Benzyl-1,2,4-oxadiazol-3-yl)methyl)-5-(3-(thiophen-3-yl)-1,2,4-oxadiazol-5-yl)pyridin-2(1H)-one (CAS 1396761-12-8)
- 2-[4-(5-Ethyl-1,2,4-oxadiazol-3-yl)-1,3-dioxo-1H,2H,3H,5H,6H,7H,8H-pyrido[1,2-c]pyrimidin-2-yl]-N-(3-fluorophenyl)acetamide (CAS 1775404-17-5)
- 4-(5-Ethyl-1,2,4-oxadiazol-3-yl)-2-{[3-(trifluoromethyl)phenyl]methyl}-1H,2H,3H,5H,6H,7H,8H-pyrido[1,2-c]pyrimidine-1,3-dione (CAS 1775402-65-7)
- 4-(5-Ethyl-1,2,4-oxadiazol-3-yl)-2-{[4-(trifluoromethyl)phenyl]methyl}-1H,2H,3H,5H,6H,7H,8H-pyrido[1,2-c]pyrimidine-1,3-dione (CAS 1775553-79-1)
- 4-(5-Ethyl-1,2,4-oxadiazol-3-yl)-2-({4-oxo-4H-pyrido[1,2-a]pyrimidin-2-yl}methyl)-1H,2H,3H,5H,6H,7H,8H-pyrido[1,2-c]pyrimidine-1,3-dione (CAS 1775353-81-5)
Recommended Standards
- 2-{[4-phenyl-5-(3,4,5-trimethoxyphenyl)-4h-1,2,4-triazol-3-yl]sulfanyl}acetohydrazide (CAS 70452-65-2)
- Oxacillin Impurity 57 (CAS CATO-C4X-232157)
- 5-(Benzo[d][1,3]dioxol-5-ylmethyl)-2-((2-(((5-methyl-1H-imidazol-4-yl)methyl)sulfinyl)ethyl)amino)pyrimidin-4(1H)-one (CAS 85643-17-0)
- Tegoprazan Impurity 81 (CAS CATO-C4X-229781)
- 2-Hydroxy-2-methyl-1-(p-tolyl)propan-1-one (CAS 15482-15-2)
- (3S,4S,5R,6R)-3,4,5-tris(benzyloxy)-6-((benzyloxy)methyl)tetrahydro-2H-pyran-2-one (CAS 82598-88-7)
- 2-(3-Bromophenyl)-5-(pentafluoro-λ6-sulfanyl)benzo[d]oxazole (CAS 1379812-03-9)
- Oxazol-2-ylamine 2-Aminoxazole 2-Aminooxazole 2-Oxazolamine 4570-45-0 (CAS 4570-45-0)
- Benzyl 2,4-di-O-benzoyl-α-D-xylopyranoside (CAS 18403-18-4)
- 5-Bromo-6,7-dihydrobenzo[c][1,2,5]oxadiazol-4(5H)-one (CAS 300574-36-1)
- 5-Methyl-2-hexene (cis- and trans- mixture) (CAS 7385-82-2)
- 1-(Thiazolidin-2-yl)ethanone hydrochloride (CAS 1993017-93-8)
- (S)-tert-Butyl 3-((6-ethoxy-2-(methylthio)pyrimidin-4-yl)amino)pyrrolidine-1-carboxylate (CAS 1354020-92-0)
- Insulin Degludec Impurity 18 (CAS CATO-C4X-215718)
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