4-Acetyloxy Omeprazole CAS 1246814-65-2
| CAS No. | 1246814-65-2 |
| Molecular Formula | C18H19N3O4S |
| Molecular Weight | 373.43 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C18H19N3O4S, 4-Acetyloxy Omeprazole contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 373.43 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
4-Acetyloxy Omeprazole (CAS 1246814-65-2) is a high-purity analytical reference standard with the molecular formula C18H19N3O4S and a molecular weight of 373.43 g/mol.
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.
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 | C18H19N3O4S |
| Molecular Weight | 373.43 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
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- (3β,5α)-3-(Acetyloxy)-pregn-16-en-20-one (CAS 1169-20-6)
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Recommended Standards
- Omeprazole acid methyl ester sulfide (CAS 120003-82-9)
- (S)-2-(2-(Diphenylphosphanyl)phenyl)-4-isopropyl-4,5-dihydrooxazole (CAS 148461-12-5)
- Piroxicam O-Isopropyl Impurity (CAS 118854-49-2)
- (S)-iPr-Phox (CAS 148461-14-7)
- 4-Bromo-3-methyl-n-(6-methylpyridin-2-yl)benzenesulfonamide (CAS 796124-04-4)
- 1-(2-Nitrophenyl)-3-phenylthiourea (CAS 72602-73-4)
- 3-(5-Aminopyridin-2-yl)thiazolidin-2-one (CAS 1221791-94-1)
- 2,13-Dinitro-6,7,9,10,17,18,20,21-octahydrodibenzo[b,k][1,4,7,10,13,16]hexaoxacyclooctadecine (CAS 32082-45-4)
- 4-Methyl-N-(3-(pyrrolidin-1-yl)propyl)benzenesulfonamide (CAS 682733-74-0)
- 2-Methoxy-4-nitrobenzaldehyde (CAS 136507-15-8)
- N-(Thiazol-2-yl)-2-(thiophen-2-ylsulfonyl)acetamide (CAS 1021020-73-4)
- 2-(2-Oxo-2,3-dihydroimidazo[1,2-a]pyridin-3-yl)succinic acid (CAS 87202-81-1)
- 6-AMINO-2H-1,4-BENZOXAZIN-3(4H)-ONE 6-amino-2H-benzo[b][1,4]oxazin-3(4H)-one 89976-75-0 (CAS 89976-75-0)
- Atrial Natriuretic Polypeptide (4-28), human (CAS 95896-08-5)
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