(D-Ala2)-Leu-Enkephalin CAS 64963-01-5
| CAS No. | 64963-01-5 |
| Molecular Formula | C29H39N5O7 |
| Molecular Weight | 569.65 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), (D-Ala2)-Leu-Enkephalin 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.
(D-Ala2)-Leu-Enkephalin (CAS 64963-01-5), molecular formula C29H39N5O7 and molecular weight 569.65 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, (D-Ala2)-Leu-Enkephalin is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 569.65 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C29H39N5O7 |
| Molecular Weight | 569.65 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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1975 |
| Nitrogen Atoms | 5 |
Recommended Standards
- (Ala2)-Leu-Enkephalin (CAS 60284-47-1)
- Fmoc-Ser(Trt)-OH (CAS 111061-56-4)
- 212631-67-9 5-Bromo-2-[(2-chloro-4-iodophenyl)amino]-N-(cyclopropylmethoxy)-3,4-difluoro-benzamide 5-Bromo-2-[(2-chloro-4-iodophenyl)amino]-N-(cyclopropylmethoxy)-3,4-difluorobenzamide PD-184161 PF-1529483 PF-3011370 UK-287074 (CAS 212631-67-9)
- (D-Ala2,D-Leu5)-Enkephalin (CAS 63631-40-3)
- Isovaleric Acid (CAS 503-74-2)
- N-(2,5-Dichlorobenzyl)-1-(pyrrolidin-2-yl)methanamine hydrochloride (CAS 1261232-22-7)
- Boc-Phe-Ser-Arg-AMC (CAS 73554-90-2)
- Methyl 2,6-dimethyl-4-(propan-2-yloxy)benzoate (CAS 1368216-66-3)
- 3-Methyl-5-morpholino-1-phenyl-1H-pyrazole-4-carbaldehyde (CAS 5547-00-2)
- 5-((2-Hydroxyethyl)amino)-1,2,4-triazin-3(2H)-one (CAS 293767-63-2)
- Famotidine impurity 62 (CAS CATO-C4X-139262)
- 6-Bromo-4-chloro-5-(difluoromethyl)pyridine-2-sulfonamide (CAS 1805237-57-3)
- Methyl 2-(1,2,3,4-tetrahydroisoquinolin-5-yl)acetate (CAS 960354-11-4)
- Liraglutide Impurity 26 (CAS CATO-C4X-199226)
Why CATO?
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- 130,000+ catalog items in stock, COA supplied with every batch
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