Hippuryl-His-Leu-OH CAS 31373-65-6
| CAS No. | 31373-65-6 |
| Molecular Formula | C21H27N5O5 |
| Molecular Weight | 543.49 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Hippuryl-His-Leu-OH 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.
Hippuryl-His-Leu-OH (CAS 31373-65-6) is a high-purity analytical reference standard with the molecular formula C21H27N5O5 and a molecular weight of 543.49 g/mol.
Owing to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, Hippuryl-His-Leu-OH is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 543.49 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C21H27N5O5 |
| Molecular Weight | 543.49 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1965 |
| Nitrogen Atoms | 5 |
Related Hippuryl Standards
- Hippuryl-Phe-Arg-OH (CAS 73167-83-6)
- Hippuryl-Lys-Val-OH (CAS 315229-41-5)
- Hippuryl-Arg-Gly (CAS 96723-71-6)
- Hippuryl-Phe-OH (CAS 744-59-2)
- Hippuryl-Cys(2-aminoethyl)-OH (G-4490.0250) (CAS 219137-68-5)
- Hippuryl-Lys-OH (CAS 740-63-6)
- Hippuryl-Gly-Gly-OH (CAS 31384-90-4)
- Hippuryl-His-Leu.Acetate (CAS 103404-54-2)
Recommended Standards
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- Phosphoramidon (CAS 36357-77-4)
- 1-(3,5-Dichloropyrazin-2-yl)ethanol (CAS 136866-33-6)
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- Methyl 2-cyanopyrrolidine-1-carboxylate (CAS 130147-41-0)
- (4-Chloro-5-methoxypyridin-3-yl)methanol (CAS 1805632-12-5)
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Why CATO?
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