DL-Lysine EP Impurity I CAS CATO-C4X-221128
| CAS No. | CATO-C4X-221128 |
| Molecular Formula | C15H20N2O5 |
| Molecular Weight | 308.33 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.
CATO supplies DL-Lysine EP Impurity I (CAS CATO-C4X-221128), a pharmacopoeial impurity reference standard (molecular formula C15H20N2O5, MW 308.33 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, DL-Lysine EP Impurity I (C15H20N2O5) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 308.33 g/mol, it falls into the moderately-high-molecular-weight range. 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), DL-Lysine EP Impurity I 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 | C15H20N2O5 |
| Molecular Weight | 308.33 g/mol |
| Appearance | Off-white to pale 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 2 |
Related DL Standards
- Lysine Impurity 30 (CAS CATO-C4X-221130)
- Dl-Lysine Acetylsalicylate EP Impurity I (CAS CATO-C4X-221135)
- Lysine Impurity 4 (CAS CATO-C4X-22114)
- Dl-Lysine Acetylsalicylate EP Impurity K (CAS CATO-C4X-22116)
- L-Lysine compound with butyric acid (1:1) (CAS 80407-71-2)
- Dl-Lysine Acetylsalicylate EP Impurity C (CAS 2924449-37-4)
- Lysine Impurity 39 (CAS 94613-75-9)
- Lysine Impurity 40 (CAS CATO-C4X-221140)
Recommended Standards
- Troxipide Impurity 9 (CAS 73448-94-9)
- Warfarin impurity 15 (CAS CATO-C4X-17815)
- Loxoprofen impurity 124 (CAS CATO-C4X-1488124)
- R-(+)-Warfarin (CAS 5543-58-8)
- N-nitroso Cyclen Impurity 130(Gadobutrol Impurity 130) (CAS CATO-C4X-2120130)
- Osimertinib Impurity 46 (CAS CATO-C4X-204546)
- Luliconazole Impurity 9 (CAS 1582735-58-7)
- (2E)-3-(2H-1,3-Benzodioxol-5-yl)-1-(3-methoxyphenyl)prop-2-en-1-one (CAS 508169-92-4)
- (2-Amino-6-methoxypyridin-4-yl)boronic acid (CAS 1225222-02-5)
- 5-(2-Fluorobenzyl)-2-(pyridin-2-yl)pyrimidine-4,6-diamine (CAS 338965-20-1)
- 2-(Difluoromethyl)-4-hydroxypyridine-5-methanol (CAS 1806777-57-0)
- 4-Methylbicyclo[4.1.0]heptane-3-carboxylic acid (CAS 2138147-10-9)
- 4,7-diazaspiro[2.5]octane; oxalic acid (CAS 1389264-25-8)
- Semaglutide impurity 247 (CAS CATO-C4X-2226247)
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