H-His-Tyr-OH CAS 35979-00-1
| CAS No. | 35979-00-1 |
| Molecular Formula | C15H18N4O4 |
| Molecular Weight | 318.33 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 H-His-Tyr-OH.
H-His-Tyr-OH (CAS 35979-00-1), molecular formula C15H18N4O4 and molecular weight 318.33 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, H-His-Tyr-OH (C15H18N4O4) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 318.33 g/mol, it falls into the moderately-high-molecular-weight range. 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.
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 | C15H18N4O4 |
| Molecular Weight | 318.33 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1967 |
| Nitrogen Atoms | 4 |
Recommended Standards
- H-Gly-Trp-Gly-OH (CAS 23067-32-5)
- H-Trp-Asn-OH (CAS 175027-11-9)
- H-Gly-Gly-Trp-OH (CAS 20762-32-7)
- H-Tyr-His-OH (CAS 3788-44-1)
- 4-Amino-4'-methyl-[1,1'-biphenyl]-3-carbaldehyde (CAS 1426813-46-8)
- 2-Bromo-3,4,5,6-tetrafluorobenzotrifluoride (CAS 66820-64-2)
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- 4-(5-Amino-1,3-dioxoisoindolin-2-yl)butanoic acid (CAS 18595-81-8)
- 6-[2(Trimethylsilyl)-1-ethynyl]-1,3-benzodioxole-5-vinylmethanol (CAS 1346602-58-1)
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- D-Thr5-Tirzepatide (CAS CATO-CPTD788926)
Why CATO?
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