Landiolol Impurity 136 CAS 1638771-94-4
| CAS No. | 1638771-94-4 |
| Molecular Formula | C19H19FN2O3 |
| Molecular Weight | 342.36 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Landiolol Impurity 136 (CAS 1638771-94-4) is a certified pharmaceutical impurity reference standard with the molecular formula C19H19FN2O3 and a molecular weight of 342.36 g/mol.
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution, Landiolol Impurity 136 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 342.36 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).
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
Physical & Chemical Properties
| Molecular Formula | C19H19FN2O3 |
| Molecular Weight | 342.36 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | ≥95% |
| Storage | Store at 2-8°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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1993 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 2 |
Related Landiolol Standards
- Landiolol Impurity 24 (CAS CATO-C4X-262124)
- Landiolol Impurity 15 (CAS 144256-12-2)
- Landiolol Impurity 64 (CAS CATO-C4X-262164)
- Landiolol Impurity 65 (CAS CATO-C4X-262165)
- Landiolol Impurity 66 (CAS CATO-C4X-262166)
- Landiolol Impurity 139 (CAS CATO-C4X-2621139)
- Landiolol Impurity 48 (CAS CATO-C4X-262148)
- Landiolol Impurity 76 (CAS CATO-C4X-262176)
Recommended Standards
- (4-BROMO-PHENYL)-DIPHENYL-AMINE 36809-26-4 4-(DIPHENYLAMINO)-1-BROMOBENZENE 4-BROMO-N,N-DIPHENYLANILINE 4-BROMOTRIPHENYLAMINE BC003214 RARECHEM FH 1G 0A02 (CAS 36809-26-4)
- Apalutamide impurity 82 (CAS 2393949-01-2)
- Sembragiline (CAS 676479-06-4)
- 6-(2-(3,4-Dimethoxyphenyl)thiazol-4-yl)picolinic acid (CAS 1027030-15-4)
- Tetra-O-Acetyl-Mannose Triflate For Radiopharmaceutical Preparations EP Impurity A (CAS 18968-05-3)
- Nafamostat impurity 81 (CAS CATO-C4X-133281)
- Ilaprazole Impurity 163 (CAS CATO-C4X-1130163)
- 2-(4-(1H-1,2,4-triazol-1-yl)phenyl)-2-((2-fluoro-5-methylphenyl)amino)acetonitrile (CAS 866157-63-3)
- 2-Bromo-4-(cyclohexyloxy)-1-methylbenzene (CAS 1369920-15-9)
- N-((5-methylfuran-2-yl)methyl)prop-2-yn-1-amine (CAS 933486-89-6)
- Propargyl-PEG5-PFP ester (CAS 2148295-92-3)
- (R)-5,7-difluoro-2,3-dihydro-1H-inden-1-amine (CAS 1213103-82-2)
- 2-(propan-2-yl)thiophene (CAS 4095-22-1)
- Insulin Degludec Impurity 11 (CAS CATO-C4X-215711)
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