(D-Pen2,D-Pen5)-Enkephalin CAS 88373-73-3
| CAS No. | 88373-73-3 |
| Molecular Formula | C30H39N5O7S2 |
| Molecular Weight | 645.79 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, (D-Pen2,D-Pen5)-Enkephalin (C30H39N5O7S2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 14.0, corresponding to approximately 14 ring(s) or double-bond equivalent(s). With a molecular weight of 645.79 g/mol, it falls into the 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.
(D-Pen2,D-Pen5)-Enkephalin (CAS 88373-73-3), molecular formula C30H39N5O7S2 and molecular weight 645.79 g/mol, is a CATO reference standard with documented purity and traceability.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
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.
Physical & Chemical Properties
| Molecular Formula | C30H39N5O7S2 |
| Molecular Weight | 645.79 g/mol |
| 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1982 |
| Nitrogen Atoms | 5 |
| Sulfur Atoms | 2 |
Recommended Standards
- 5-(2,4-bis(benzyloxy)-5-isopropylphenyl)-N-ethyl-4-(4-(morpholinomethyl)phenyl)isoxazole-3-carboxamide (CAS 747414-24-0)
- [D-Pen2, Pen5] Enkephalin (CAS 88373-72-2)
- Fmoc-β-Ala-Lys(ivDde)-OH (CAS CATO-CPTD788753)
- (S)-2,5-bis((tert-Butoxycarbonyl)(3-((tert-butoxycarbonyl)amino)propyl)amino)pentanoic acid (CAS 119798-08-2)
- Methyl 4-(benzyloxy)-2-(((dimethylamino)methylene)amino)-5-methoxybenzoate (CAS 263149-09-3)
- 1-(Dimethylamino)-3-(2-(3-methoxyphenethyl)phenoxy)propan-2-ol hydrochloride (CAS 135261-74-4)
- N-(2-(2,2-Dibromovinyl)phenyl)methanesulfonamide (CAS 1259577-20-2)
- Diethyl 1,2,5-triphenyl-2,5-dihydro-1H-pyrrole-3,4-dicarboxylate (CAS 3339-86-4)
- 2-(Cyclopropylamino)-4-propylpyrimidine-5-carboxylic acid (CAS 1343172-25-7)
- 3-(Dimethylamino)-1-(2-(methyl(4-(trifluoromethyl)phenyl)amino)thiazol-5-yl)prop-2-en-1-one (CAS 1211883-38-3)
- (E)-N-(3-(3-(Dimethylamino)acryloyl)phenyl)-N-ethylacetamide (CAS 1227694-96-3)
- 3-Bromo-N-(1-(ethylamino)-1-oxopropan-2-yl)benzamide (CAS 1096428-22-6)
- 2-chloro-5-(chloromethyl)pyridine-3-carbonitrile (CAS 1360900-22-6)
- Semaglutide impurity 36 (CAS CATO-C4X-222636)
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