9H-Fluorene-9-thiol CAS 19552-08-0
| CAS No. | 19552-08-0 |
| Molecular Formula | C43H57N5O9 |
| Molecular Weight | 787.94 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 9H-Fluorene-9-thiol (CAS 19552-08-0), a certified reference material (molecular formula C43H57N5O9, MW 787.94 g/mol) for analytical method development and quality control.
Based on its molecular formula C43H57N5O9, 9H-Fluorene-9-thiol contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 787.94 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
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 | C43H57N5O9 |
| Molecular Weight | 787.94 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) | 18.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Nitrogen Atoms | 5 |
Related H Standards
- 4,4'-(9H-Fluorene-9,9-diyl)bis(N,N-di-p-tolylaniline) (CAS 159526-57-5)
- 9,9'-((9H-Fluorene-9,9-diyl)bis(3,1-phenylene))bis(9H-carbazole) (CAS 1431945-64-0)
- 9,9'-((9H-Fluorene-9,9-diyl)bis(4,1-phenylene))bis(9H-carbazole) (CAS 848679-72-1)
- (((9H-fluorene-9,9-diyl)bis(naphthalene-6,2-diyl))bis(oxy))bis(ethane-2,1-diyl) diacrylate (CAS 1170946-19-6)
- Fluorene methoxycarbonyl-O-tert-butyl-L-threonine L-phenylalanine benzyl ester (CAS CATO-CPTD788877)
- [[(9H-Fluorene-9,9-diyl)bis(4,1-phenylene)]bis(oxy)]bis(2-hydroxypropane-3,1-diyl) Diacrylate (CAS 143182-97-2)
- 2,2'-((((9H-fluorene-9,9-diyl)bis(naphthalene-6,2-diyl))bis(oxy))bis(methylene))bis(oxirane) (CAS 1238475-45-0)
- 2,2'-((((((9H-fluorene-9,9-diyl)bis(4,1-phenylene))bis(oxy))bis(ethane-2,1-diyl))bis(oxy))bis(methylene))bis(oxirane) (CAS 259881-39-5)
Recommended Standards
- Eravacycline impurity 24 (CAS CATO-C4X-293824)
- 2-(4-(10-(3-(9H-carbazol-9-yl)phenyl)anthracen-9-yl)phenyl)-1-phenyl-1H-phenanthro[9,10-d]imidazole (CAS 2506256-67-1)
- Paclitaxel Impurity 60 (CAS CATO-C4X-184260)
- N6-Benzoyl-2-O-tert-butyldimethylsilyl-5-O-DMT-adenosine (CAS 81265-93-2)
- 1,2,3,4,5,6,7,8-octahydroanthracene (CAS 1079-71-6)
- 1-(Azepan-1-yl)propan-2-ol (CAS 77883-50-2)
- 8-((4-(2-Hydroxyethyl)piperazin-1-yl)methyl)-1,3-dimethyl-3,7-dihydro-1H-purine-2,6-dione (CAS 65919-57-5)
- tert-Butyl (2-(2-chloro-2-phenylacetamido)ethyl)carbamate (CAS 1420800-29-8)
- Ethyl 3-Amino-5,6-dichloropyrazine-2-carboxylate (CAS 86882-92-0)
- Fudosteine Impurity 32 (CAS CATO-C4X-144732)
- 4-AMINO-2-(TERT-BUTYL)PHENOL TFA (CAS 1660153-64-9)
- 6-(Benzyloxy)-1,2,3,4-tetrahydronaphthalen-1-amine hydrochloride (CAS 1956321-32-6)
- Tafluprost impurity 23 (CAS CATO-C4X-216323)
- (9-D-Asp) Semaglutide X Sodium salt (CAS CATO-CPTD788617)
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