133972-52-8 Big Endothelin-1 (1-31) (human, bovine) CAS 133972-52-8
| CAS No. | 133972-52-8 |
| Molecular Formula | C162H236N38O47S5 |
| Molecular Weight | 3628.16 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C162H236N38O47S5, 133972-52-8 Big Endothelin-1 (1-31) (human, bovine) 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 3628.16 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.
CATO supplies 133972-52-8 Big Endothelin-1 (1-31) (human, bovine) (CAS 133972-52-8), a certified reference material (molecular formula C162H236N38O47S5, MW 3628.16 g/mol) for analytical method development and quality control.
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), 133972-52-8 Big Endothelin-1 (1-31) (human, bovine) 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 | C162H236N38O47S5 |
| Molecular Weight | 3628.16 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) | 64.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1995 |
| Nitrogen Atoms | 38 |
| Sulfur Atoms | 5 |
Related Big Standards
- Big Endothelin-1 (1-38), human (CAS 121014-53-7)
- Endothelin-3 (human, mouse, rabbit, rat) (CAS 117399-93-6)
- Endothelin-2 (human, canine) (CAS 123562-20-9)
- (Ala1·3·11·1?)-Endothelin-1 (CAS 121204-87-3)
- Big Endothelin-3 (22-41) amide (human) (CAS 174283-52-4)
- Big Endothelin-1 (22-39), bovine (CAS 133474-20-1)
- Big Endothelin-1 (22-38), human (CAS 124932-61-2)
- Endothelin-1 (11-21) (CAS 144602-02-8)
Recommended Standards
- (Tyr?)-BNP-32 (human) (CAS 1815617-97-0)
- K-41498 (CAS 434938-41-7)
- (D-Trp12,Tyr34)-pTH (7-34) amide (bovine) trifluoroacetate salt (CAS 118102-98-0)
- CJC-1295 (CAS 446262-90-4)
- Cysteine-penicillamine disulfide (CAS 92077-05-9)
- 5-Bromo-2,3-diiodo-1-(phenylsulfonyl)-1H-pyrrolo[2,3-b]pyridine (CAS 1299607-59-2)
- (2R,4S,5R)-2,4,5,6-tetrahydroxyhexanoic acid (CAS 498-43-1)
- 4-Cycloheptylpiperidine (CAS 1493476-12-2)
- 2-(2,3-Dihydro-1,4-benzodioxin-6-yl)piperidine (CAS 96650-93-0)
- 3-((Dimethylamino)methyl)-1H-indole-4-carbonitrile (CAS 105907-63-9)
- 2-((3-(2-Methoxyethoxy)phenyl)carbamoyl)benzoic acid (CAS 925567-84-6)
- 2-(2-(Benzo[d]isoxazol-3-yl)acetyl)-N-(4-chlorophenyl)hydrazine-1-carbothioamide (CAS 860651-57-6)
- Diclofenac EP Impurity D (CAS 127792-23-8)
- Semaglutide Impurity 9 (CAS CATO-C4X-22269)
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