β-Endorphin (rat) CAS 309246-19-3
| CAS No. | 309246-19-3 |
| Molecular Formula | C157H254N42O44S |
| Molecular Weight | 3466.00 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including β-Endorphin (rat).
β-Endorphin (rat) (CAS 309246-19-3), molecular formula C157H254N42O44S and molecular weight 3466.00 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C157H254N42O44S, β-Endorphin (rat) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 3466.00 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
As a certified reference material (CRM), β-Endorphin (rat) 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 | C157H254N42O44S |
| Molecular Weight | 3466.00 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) | 52.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 42 |
| Sulfur Atoms | 1 |
Related Endorphin Standards
- β-Endorphin, rat (CAS 77367-63-6)
- b-Endorphin (human) (H-2700.0001) (CAS 61214-51-5)
- b-Endorphin (bovine, camel, mouse) (H-2705.0001) (CAS 59887-17-1)
- Acetyl-β-Endorphin (human) (CAS 80102-04-1)
- b-Endorphin (equine) (H-5636.0001) (CAS 79495-86-6)
- Acetyl-δ-Endorphin (bovine, camel, mouse, ovine) (CAS 78325-29-8)
- 66954-40-3 beta-Endorphin (1-27) beta-Endorphin, 28-de-L-lysine-29-de-L-lysine-30-deglycine-31-de-L-glutamine- beta-Endorphin(1-27) (CAS 66954-40-3)
- β-Endorphin (6-31) (human) (CAS 77761-27-4)
Recommended Standards
- Gly-Neuroendocrine Regulatory Peptide-3 (human, mouse, rat) trifluoroacetate salt (CAS 1815618-19-9)
- VIP Antagonist (CAS 125093-93-8)
- Nesiritide (CAS 124584-08-3)
- GRF (1-29) amide (rat) (CAS 91826-20-9)
- 4-[2-(Boc-amino)ethoxy]benzamide (CAS 1256633-40-5)
- Tert-butyl n-[2-amino-1-(2-methoxyphenyl)ethyl]carbamate (CAS 1016696-47-1)
- 1H-Indole-2,3-dicarboxylic acid (CAS 103030-09-7)
- 4-(3-(3,4-Dihydro-2H-pyrrol-5-yl)pyridin-2-yl)morpholine (CAS 1352529-18-0)
- 2-(bromomethyl)-1-chloro-3-ethoxybenzene (CAS 329980-82-7)
- 7-Amino-3-benzyl-2-(methylthio)quinazolin-4(3H)-one (CAS 916137-36-5)
- 2-(11-Hydroxy-3-oxo-3H-dibenzo[c,h]xanthen-7-yl)benzoic acid (CAS 51517-45-4)
- Bis(1,3-dithian-2-yl)methane-d (CAS 31401-53-3)
- Landiolol Impurity 57 (CAS CATO-C4X-262157)
- Ephrin-A2-Selective YSA-Peptide (CAS 532441-10-4)
Why CATO?
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