Baricitinib Impurity 39 CAS 1146629-76-6
| CAS No. | 1146629-76-6 |
| Molecular Formula | C19H25N5O3 |
| Molecular Weight | 371.43 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Baricitinib Impurity 39 (CAS 1146629-76-6) is a certified pharmaceutical impurity reference standard with the molecular formula C19H25N5O3 and a molecular weight of 371.43 g/mol.
Baricitinib Impurity 39 (C19H25N5O3) contains a steroid core, 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
As a certified reference material (CRM), Baricitinib Impurity 39 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 | C19H25N5O3 |
| Molecular Weight | 371.43 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| 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 |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Nitrogen Atoms | 5 |
Related Baricitinib Standards
- Baricitinib (CAS 1187594-09-7)
- Baricitinib Impurity 100 (CAS CATO-C4X-2260100)
- Baricitinib Impurity 51 (CAS CATO-C4X-226051)
- Baricitinib Impurity 71 (CAS CATO-C4X-226071)
- Baricitinib Impurity 91 (CAS CATO-C4X-226091)
- Baricitinib-D3 (CAS 1564242-30-3)
- Baricitinib Impurity 58 (CAS CATO-C4X-226058)
- Baricitinib D5 (CAS CATO-C4X-2260107)
Recommended Standards
- Iguratimod Impurity 44 (CAS CATO-C4X-182644)
- Nemonoxacin Impurity 7 (CAS CATO-C4X-31287)
- Naltrexone impurity 45 (CAS CATO-C4X-147545)
- Nemonoxacin Impurity 8 (CAS 378746-65-7)
- Brivudine Impurity 13 (CAS 888-04-0)
- Deferiprone EP Impurity A (CAS CATO-C4X-1132117)
- Etomidate Impurity N15 (CAS 2433776-55-5)
- 5-Iodo-1-methyl-1H-indazole (CAS 1072433-59-0)
- 4-Chloro-N-{4-[(4-methylphenyl)sulfanyl]phenyl}benzamide (CAS 126584-81-4)
- 3-Bromo-5-fluoro-4-hydroxybenzaldehyde (CAS 185345-46-4)
- N,N-Dimethyldodecanamide (CAS 3007-53-2)
- 1,3-Dichlorocyclohexane (CAS 55887-78-0)
- methyl 3-{[(2-methoxyphenyl)methyl]sulfanyl}propanoate (CAS 180044-50-2)
- Insulin Degludec Impurity 10 (CAS CATO-C4X-215710)
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