pTH (1-31) (human) CAS 157938-23-3
| CAS No. | 157938-23-3 |
| Molecular Formula | C162H269N49O47S2 |
| Molecular Weight | 3719.35 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), pTH (1-31) (human) 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.
pTH (1-31) (human) (CAS 157938-23-3) is a high-purity analytical reference standard with the molecular formula C162H269N49O47S2 and a molecular weight of 3719.35 g/mol.
The molecular framework of pTH (1-31) (human) (C162H269N49O47S2) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C162H269N49O47S2 |
| Molecular Weight | 3719.35 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) | 53.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2002 |
| Nitrogen Atoms | 49 |
| Sulfur Atoms | 2 |
Related pTH Standards
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Recommended Standards
- pTH (1-31) amide (human) (CAS 173833-08-4)
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