9-Methyl-6,7,8,9-tetrahydro-5H-benzo[7]annulen-5-one CAS 13554-78-4
| CAS No. | 13554-78-4 |
| Molecular Formula | C12H14O |
| Molecular Weight | 174.24 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 9-Methyl-6,7,8,9-tetrahydro-5H-benzo[7]annulen-5-one.
9-Methyl-6,7,8,9-tetrahydro-5H-benzo[7]annulen-5-one (CAS 13554-78-4), molecular formula C12H14O and molecular weight 174.24 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a hydroxyl group, an ether linkage, an aromatic ring system, 9-Methyl-6,7,8,9-tetrahydro-5H-benzo[7]annulen-5-one is typically off-white to pale yellow low-melting solid. Its solid-state physicochemical attributes — including a molecular weight of 174.24 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).
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.
As a certified reference material (CRM), 9-Methyl-6,7,8,9-tetrahydro-5H-benzo[7]annulen-5-one 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 | C12H14O |
| Molecular Weight | 174.24 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1960 |
Related Methyl Standards
- 6,7,8,9-Tetrahydro-5h-benzo[7]annulene-7-carbaldehyde (CAS 101955-04-8)
- 6'-Methyl-3,4,5,6-tetrahydro-2,2'-bipyridine (CAS 1355172-68-7)
- 4'-Methyl-3,4,5,6-tetrahydro-2,2'-bipyridine (CAS 1355179-94-0)
- 2'-Methyl-3,4,5,6-tetrahydro-2,3'-bipyridine (CAS 156743-54-3)
- 5'-Methyl-3,4,5,6-tetrahydro-2,3'-bipyridine (CAS 156743-56-5)
- 6'-Methyl-3,4,5,6-tetrahydro-2,3'-bipyridine (CAS 156743-57-6)
- (3R)-3-((Tetrahydro-2H-pyran-2-yl)oxy)butan-1-ol (CAS 77610-95-8)
- 2-Methyl-2-((tetrahydro-2H-pyran-2-yl)oxy)propan-1-ol (CAS 956079-44-0)
Recommended Standards
- (2R)-2-amino-4-(diethylamino)butanoic acid (CAS 1356618-52-4)
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- 6-Methoxy-1-methylene-1,2,3,4-tetrahydronaphthalene (CAS 13587-99-0)
- 1-Oxa-3,9-diazaspiro[5.5]undecan-2-one (CAS 54981-11-2)
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- 4-(Benzyloxy)-6-cyanopyridine-2-sulfonyl chloride (CAS 1393572-69-4)
- 7-(1-Ethyl-1h-pyrazol-3-yl)-[1,2,4]triazolo[1,5-a]pyrimidine-2-carboxylic acid (CAS 1171033-76-3)
- 2-bromo-N-(3-methylphenyl)butanamide (CAS 42276-53-9)
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