8,9-Dihydro-7H-cyclopenta[h]isoquinoline-5,6-diol CAS 739320-29-7
| CAS No. | 739320-29-7 |
| Molecular Formula | C12H11NO2 |
| Molecular Weight | 201.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
8,9-Dihydro-7H-cyclopenta[h]isoquinoline-5,6-diol (CAS 739320-29-7), molecular formula C12H11NO2 and molecular weight 201.22 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 8,9-Dihydro-7H-cyclopenta[h]isoquinoline-5,6-diol (C12H11NO2) is characterized by an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
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 | C12H11NO2 |
| Molecular Weight | 201.22 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.) | 1986 |
| Nitrogen Atoms | 1 |
Related Dihydro Standards
- 5-(2,3-Dihydro-1h-inden-5-yl)-1,3,4-oxadiazol-2-amine (CAS 1016733-47-3)
- 5,6-Dihydro-4H-pyrrolo[3,2,1-ij]quinoline-2-carboxylic acid (CAS 117273-45-7)
- 5,6-Dihydro-4H-pyrrolo[3,2,1-ij]quinoline-1-carboxylic Acid (CAS 124730-56-9)
- 5-(2,3-Dihydro-1h-inden-5-yl)-1,2,4-oxadiazol-3-amine (CAS 1340362-30-2)
- 3,4-Dihydro-2H-pyrano[2,3-b]quinolin-5(10H)-one (CAS 88696-55-3)
- 3,5-Dihydro-2H-thieno[2,3-c]pyrrole-4-carboxylic Acid 1,1-Dioxide (CAS 1554303-12-6)
- 6,7-Dihydro-5H-thiazolo[4,5-f]indole-2-carbonitrile (CAS 1247879-14-6)
- Methyl (5,6-dihydro-1,4-dioxine-2-carbonyl)glycinate (CAS 1156430-28-2)
Recommended Standards
- 8-(1,3-Dioxolan-2-yl)quinoline (CAS 773092-97-0)
- 8-acetÂoxyÂquinaldine (CAS 27037-61-2)
- 7-Methylquinoline-2-carbohydrazide (CAS 78224-52-9)
- 8-Amino-1,4-dioxaspiro[4.5]decane-8-carboxylic Acid (CAS 54621-18-0)
- 4-Hydroxy Trimethoprim (CAS 112678-48-5)
- 1,2,2-Tris[(S)-4-isopropyl-4,5-dihydro-2-oxazolyl]propane (CAS 458563-75-2)
- tert-butyl 5-(2-methylpyrazol-3-yl)-2-oxo-3,9-diazaspiro[5.5]undecane-9-carboxylate (CAS 2412927-77-4)
- Methyl 5-chloro-2-methyl-4-nitrobenzoate (CAS 143034-83-7)
- 4-[(3-Chlorophenyl)methoxy]-6-{[(4-chlorophenyl)sulfanyl]methyl}-2-methylpyrimidine (CAS 338960-41-1)
- DL-Phenylalanine-4-sulfofluoride hydrochloride (CAS 1184173-25-8)
- 3-(1H-Indol-3-yl)isobenzofuran-1(3H)-one (CAS 6936-87-4)
- 4-Methyl-6-(pyridin-3-yl)-1,3,5-triazin-2-amine (CAS 119294-49-4)
- 4-Chloro-8-fluoro-6-methoxyquinoline-3-carbonitrile (CAS 1823500-08-8)
- (Ser(PO3H2)202,Thr(PO3H2)205)-Tau Peptide (194-213) trifluoroacetate salt (CAS 2022956-55-2)
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