Cyclo(-Trp-Trp) CAS 20829-55-4
| CAS No. | 20829-55-4 |
| Molecular Formula | C22H20N4O2 |
| Molecular Weight | 372.42 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Cyclo(-Trp-Trp) under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
CATO supplies Cyclo(-Trp-Trp) (CAS 20829-55-4), a certified reference material (molecular formula C22H20N4O2, MW 372.42 g/mol) for analytical method development and quality control.
Structurally, Cyclo(-Trp-Trp) (C22H20N4O2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 15.0, corresponding to approximately 15 ring(s) or double-bond equivalent(s). With a molecular weight of 372.42 g/mol, it falls into the moderately-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.
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.
Physical & Chemical Properties
| Molecular Formula | C22H20N4O2 |
| Molecular Weight | 372.42 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°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) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Nitrogen Atoms | 4 |
Related Cyclo Standards
Recommended Standards
- Ac-Lys(Ac)-D-Ala-D-Ala-OH (CAS 24570-39-6)
- (5-Methyl-1-(1-methylpiperidin-3-yl)-3-(trifluoromethyl)-1H-pyrazol-4-yl)(3-methylpiperidin-1-yl)methanone (CAS 1203254-95-8)
- Tert-butyl 7-(2-hydroxy-4-oxo-4H-pyrido[1,2-a]pyrimidin-7-yl)-4,7-diazaspiro[2.5]octane-4-carboxylate (CAS 2133298-72-1)
- 2-(Allylthio)-1-(4-(difluoromethoxy)phenyl)-5-(p-tolyl)-1H-imidazole (CAS 1226455-63-5)
- 1-Iodohexane (CAS 638-45-9)
- 3-Bromo-2-fluoro-5-iodobenzonitrile (CAS 1160574-12-8)
- N1-(5-bromopyrimidin-2-yl)ethane-1,2-diamine (CAS 1232396-72-3)
- Ethyl 5-bromo-1-(3-chloro-4-methylphenyl)-1H-pyrazole-4-carboxylate (CAS 1399663-13-8)
- Ethyl 2-chlorobenzo[d]thiazole-7-carboxylate (CAS 1620128-74-6)
- 1-(2,4-Dichlorophenyl)pentan-1-one (CAS 61023-66-3)
- 8-Quinolinecarboxaldehyde (CAS 38707-70-9)
- 2,7-Dichloro-3-ethylquinoline (CAS 132118-51-5)
- 1-(4-Bromophenyl)imidazolidin-2-one (CAS 530081-14-2)
- D-Pro38-Tirzepatide (CAS CATO-CPTD788901)
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