3,4-Dihydro-7-methoxy-2H-1-naphthalenone-O-tosyloxime CAS 99833-87-1
| CAS No. | 99833-87-1 |
| Molecular Formula | C18H19NO4S |
| Molecular Weight | 345.41 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 3,4-Dihydro-7-methoxy-2H-1-naphthalenone-O-tosyloxime 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.
3,4-Dihydro-7-methoxy-2H-1-naphthalenone-O-tosyloxime (CAS 99833-87-1), molecular formula C18H19NO4S and molecular weight 345.41 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 3,4-Dihydro-7-methoxy-2H-1-naphthalenone-O-tosyloxime (C18H19NO4S) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 345.41 g/mol, it falls into the moderately-high-molecular-weight range. 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.
Physical & Chemical Properties
| Molecular Formula | C18H19NO4S |
| Molecular Weight | 345.41 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Dihydro Standards
- 10,15-Dihydro-5H-diindolo[3,2-a:3',2'-c]carbazole (CAS 109005-10-9)
- 6,11-Dihydro-5H-diindolo[2,3-a:2',3'-c]carbazole (CAS 70381-95-2)
- 2-(2,3-Dihydro-1H-indene-5-carbonyl)-N-(furan-2-ylmethyl)benzamide (CAS 866132-91-4)
- 2,3-Dihydro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-indole-1-carboxylic Acid tert-Butyl Ester (CAS 837392-67-3)
- 1,3-Dihydro-1,3-dioxo-2H-isoindol-2-yl 4-bromobenzoate (CAS 413594-59-9)
- 1,3-Dihydro-1,3-dioxo-2H-isoindol-2-yl 1-[[(1,1-dimethylethoxy)carbonyl]amino]cyclopropanecarboxylate (CAS 2240185-66-2)
- 6,7-Dihydro Canrenone Lactol (CAS 52520-27-1)
- 9,10-Dihydro-9,10-[1,2]benzenoanthracene-2,3,6,7,14,15-hexaamine (CAS 58519-07-6)
Recommended Standards
- 2-[5-(4-Methoxybenzoyl)-2-thienyl]-3-phenylacrylonitrile (CAS 338966-79-3)
- 3-Chloro-5-(2,2,2-trichloroacetyl)-1h-pyrrole-2-sulfonyl chloride (CAS 930395-76-9)
- 2-[(3-Phenoxyphenyl)methylidene]-3,4-dihydro-2H-1,4-benzothiazin-3-one (CAS 452949-78-9)
- 3-Methyl-N-(9-oxo-9H-thioxanthen-2-yl)benzamide (CAS 478248-53-2)
- 1-(3-Bromothiophen-2-yl)-N-((tetrahydrofuran-2-yl)methyl)methanamine (CAS 1250914-16-9)
- (5-Cyclopropylfuran-2-yl)boronic acid (CAS 1693758-46-1)
- N-(4-(tert-Butyl)benzyl)acetamide (CAS 942433-35-4)
- 2-Picoline-3-boronic acid HCl (CAS 1072952-34-1)
- 3-Fluoro-1-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (CAS 2271472-69-4)
- (2Z)-2-Amino-3-[(E)-[(pyridin-3-yl)methylidene]amino]but-2-enedinitrile (CAS 58259-74-8)
- tert-Butyl N-[2-(3-methoxyphenyl)-2-oxoethyl]carbamate (CAS 912762-33-5)
- 2-Chloro-5-fluoropyridin-4-ol (CAS 1196153-96-4)
- Ethyl 1-phenyl-5-(phenylamino)-1H-imidazole-4-carboxylate (CAS 68695-58-9)
- Liraglutide Impurity 26 (CAS CATO-C4X-199226)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com