H-Leu-Ser-Lys-Leu-OH CAS 162559-45-7
| CAS No. | 162559-45-7 |
| Molecular Formula | C21H41N5O6 |
| Molecular Weight | 459.58 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, H-Leu-Ser-Lys-Leu-OH (C21H41N5O6) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 459.58 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.
H-Leu-Ser-Lys-Leu-OH (CAS 162559-45-7), molecular formula C21H41N5O6 and molecular weight 459.58 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures H-Leu-Ser-Lys-Leu-OH 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 | C21H41N5O6 |
| Molecular Weight | 459.58 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2003 |
| Nitrogen Atoms | 5 |
Recommended Standards
- Glycodehydrocholic acid (CAS 3415-45-0)
- Ser-Leu-Leu-Lys-NH2 (CAS 464924-27-4)
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- AM-461, >98% (HPLC) (CAS 1203503-64-3)
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Why CATO?
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