18,21-didehydro-17-demethoxy-18,21-dideoxo-18,21-dihydroxy-15R-methoxy-geldanamycin 91700-91-3 CAS 91700-91-3
| CAS No. | 91700-91-3 |
| Molecular Formula | C29H42N2O9 |
| Molecular Weight | 562.65 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
18,21-didehydro-17-demethoxy-18,21-dideoxo-18,21-dihydroxy-15R-methoxy-geldanamycin 91700-91-3 (C29H42N2O9) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO supplies 18,21-didehydro-17-demethoxy-18,21-dideoxo-18,21-dihydroxy-15R-methoxy-geldanamycin 91700-91-3 (CAS 91700-91-3), a certified reference material (molecular formula C29H42N2O9, MW 562.65 g/mol) for analytical method development and quality control.
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.
CATO manufactures 18,21-didehydro-17-demethoxy-18,21-dideoxo-18,21-dihydroxy-15R-methoxy-geldanamycin 91700-91-3 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.
Physical & Chemical Properties
| Molecular Formula | C29H42N2O9 |
| Molecular Weight | 562.65 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1983 |
| Nitrogen Atoms | 2 |
Related didehydro Standards
- 12,13-Didehydro-6-methyl-4-phenyl-2H-benzo[c]pyrano[2,3-i][1]benzazocine-2,7(6H)-dione (CAS 1345138-69-3)
- 16,17-Didehydro 16-Demethyl Desoximetasone (CAS 1234572-33-8)
- (8|A)-9,10-Didehydro-2,3-dihydro-3-hydroxy-N,6-dimethyl-2-oxo-N-propylergoline-8-carboxamide 2-Oxo-3-hydroxy LAMPA 2-Oxo-3-hydroxy-N-methyl-N-propyl D-Lysergamide 2-Oxo-3-hydroxylysergic Acid Methyl Propyl Amide 249921-57-1 (CAS 249921-57-1)
- 2,3-Didehydro Gibberellin A9 (CAS 2531-21-7)
- 9-cis-4,5-Didehydro-5,6-dihydro Retinoic Acid (CAS 111957-72-3)
- 11,12-Didehydro Retinol (CAS 29443-88-7)
- 11-cis-3,4-Didehydro Retinal (CAS 41470-05-7)
- 【禁售不询】9,10-DIDEHYDRO-6-METHYL-ERGOLINE-8-CARBOXYLIC ACID (CAS 82-58-6)
Recommended Standards
- Nonacosan-15-ylbenzene (CAS 56247-97-3)
- Mycophenolate Mofetil EP Impurity B (CAS 1094322-91-4)
- Deglucohellebrin (CAS 20300-44-1)
- Fmoc-(α-Me)-L-Phe-(α-Me)-L-Phe-OH (CAS 2978738-77-9)
- 3-Bromo-8-nitroquinoline (CAS 5341-07-1)
- 6-(Piperidine-1-sulfonyl)-1h-1,3-benzodiazol-1-ol (CAS 730992-39-9)
- 5-(3-Chloro-4-methoxyphenyl)nicotinic acid (CAS 1261960-17-1)
- 2-(4-Benzylphenoxy)ethan-1-amine (CAS 138113-73-2)
- 2-(1-((Dichloromethyl)sulfonyl)-2-(2-fluorophenyl)vinyl)-5-nitrofuran (CAS 62429-96-3)
- 2,2,2-Trifluoroethyl 2-methyl-2,3-dihydro-1H-indole-1-carboxylate (CAS 1087798-15-9)
- 2-(4-Butylbenzamido)thiophene-3-carboxylic acid (CAS 1098375-06-4)
- NH2-PEG5-C6-Cl (CAS 1261238-22-5)
- 4-chlorofuran-2-carboxylic acid (CAS 4303-17-7)
- Insulin Degludec Impurity 17 (CAS CATO-C4X-215717)
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