(DHQD)2Pyr CAS 149725-81-5
| CAS No. | 149725-81-5 |
| Molecular Formula | C56H60N6O4 |
| Molecular Weight | 881.11 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(DHQD)2Pyr (CAS 149725-81-5), molecular formula C56H60N6O4 and molecular weight 881.11 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, (DHQD)2Pyr (C56H60N6O4) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 30.0, corresponding to approximately 30 ring(s) or double-bond equivalent(s). With a molecular weight of 881.11 g/mol, it falls into the 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.
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 | C56H60N6O4 |
| Molecular Weight | 881.11 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) | 30.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1999 |
| Nitrogen Atoms | 6 |
Related DHQD Standards
Recommended Standards
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- Ribociclib Impurity 42 (CAS CATO-C4X-310042)
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- Ethyl 3-amino-8-azabicyclo[3.2.1]Octane-8-carboxylate (CAS 638193-50-7)
- tert-butyl N-[4-bromo-2-(trifluoromethyl)phenyl]carbamate (CAS 1393442-28-8)
- 2-(Methylsulfonyl)pyridine (CAS 17075-14-8)
- 4-[(4-Methylbenzylamino)methyl]-3-nitrobenzoic Acid Methyl Ester (CAS 675602-57-0)
- 1-(3,5-Dimethylphenyl)-1H-1,2,3-triazole-4-carbaldehyde (CAS 1479268-46-6)
- 2-Amino-7-hydroxy-1,2,3,4-tetrahydronaphthalene-2-carboxylic acid (CAS 741614-51-7)
- 2-Bromo-5-fluoro-4-(trifluoromethoxy)aniline (CAS 1805503-39-2)
- 1-(4-Bromophenyl)-N,N-dimethylmethanamine (CAS 6274-57-3)
- N-Ethyl-4-methyl-2-nitroaniline (CAS 37637-58-4)
- Peptide Impurity 27 (CAS 1350456-68-6)
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