(3,5-Dibromo-Tyr1)-Leu-Enkephalin (H-2575.0100) CAS 72601-98-0
| CAS No. | 72601-98-0 |
| Molecular Formula | C28H35Br2N5O7 |
| Molecular Weight | 713.41 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(3,5-Dibromo-Tyr1)-Leu-Enkephalin (H-2575.0100) (CAS 72601-98-0), molecular formula C28H35Br2N5O7 and molecular weight 713.41 g/mol, is a CATO reference standard with documented purity and traceability.
(3,5-Dibromo-Tyr1)-Leu-Enkephalin (H-2575.0100) (C28H35Br2N5O7) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, bromine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
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 | C28H35Br2N5O7 |
| Molecular Weight | 713.41 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1977 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 5 |
Related Dibromo Standards
- 5,8-Dibromo-2,3-bis(5-(2-ethylhexyl)thiophen-2-yl)-6,7-difluoroquinoxaline (CAS 1643416-18-5)
- 5,8-Dibromo-6-fluoro-2,3-bis(3-(octyloxy)phenyl)quinoxaline (CAS 1415800-22-4)
- 5,8-Dibromo-6-fluoro-2,3-bis(4-(octyloxy)phenyl)quinoxaline (CAS 1415801-20-5)
- 1,3-Dibromo-5,7-bis(2-butyloctyl)-4H,8H-benzo[1,2-c:4,5-c']dithiophene-4,8-dione (CAS 2093197-88-5)
- 3',6'-Dibromo-4',5'-bis(4-carboxyphenyl)-[1,1':2',1''-terphenyl]-4,4''-dicarboxylic acid (CAS 1206802-27-8)
- 2,6-Dibromo-4,8-bis(dodecyloxy)benzo[1,2-b:4,5-b']dithiophene (CAS 1044795-06-3)
- 2,6-Dibromo-4,8-bis[(2-butyl-n-octyl)oxy]benzo[1,2-b:4,5-b']dithiophene (CAS 1336893-15-2)
- 5,5'-Dibromo-3,3'-ditetradecyl-2,2'-bithiophene (CAS 2140172-24-1)
Recommended Standards
- Chloronitrosyl[N,N'-bis(3,5-di-tert-butylsalicylidene)-1,1,2,2-tetramethylethylenediaminato]ruthenium(IV) (CAS 386761-71-3)
- Samarium, (copper)[μ-[[3,3'-[1,2-cyclohexanediylbis[(nitrilo-κN)methylidyne]]bis[1,2-benzenediolato-κO1,κO2:κO2]](4-)]][4-(1,1-dimethylethyl)phenolato]- (CAS 937376-15-3)
- 2'/3'-O-Trinitrophenyl-adenosine-5'-triphosphate triethylammonium salt - 10mM aqueous Solution (CAS 61368-63-6)
- Lenvatinib Impurity N12 (CAS 2143930-75-8)
- 4-Methyl-1-piperazinesulfonyl Chloride Hydrochloride (CAS 33581-96-3)
- 5-(3-Amino-4-chloro-1h-pyrazol-1-yl)-2,2-dimethylpentanenitrile (CAS 1497949-34-4)
- n1-Cyclopropylbutane-1,2-diamine (CAS 1248722-18-0)
- 2-((2-Chlorobenzyl)(cyclopropyl)amino)acetic acid (CAS 1178122-46-7)
- 5-[3-Chloro-5-(trifluoromethyl)pyridin-2-yl]-2-(pyridin-4-yl)pyrimidine (CAS 344278-11-1)
- 3-Methoxypiperidin-4-one (CAS 1220039-57-5)
- 5-(piperidin-3-yl)-2,3-dihydro-1H-1,2,4-triazol-3-one hydrochloride (CAS 1803561-58-1)
- N-(4-acetyl-5-isobutyl-5-phenyl-4,5-dihydro-1,3,4-thiadiazol-2-yl)acetamide (CAS 355435-20-0)
- 2-(4-Chlorophenyl)-N-(2-methoxybenzyl)ethanamine (CAS 625408-34-6)
- α Bag Cell Peptide (1-9) (CAS 87549-52-8)
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