Cytarabine Impurity 38 CAS 104105-73-9
| CAS No. | 104105-73-9 |
| Molecular Formula | C14H17N5O5 |
| Molecular Weight | 335.32 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
Cytarabine Impurity 38 (CAS 104105-73-9) is a high-purity analytical reference standard with the molecular formula C14H17N5O5 and a molecular weight of 335.32 g/mol.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, Cytarabine Impurity 38 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 335.32 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C14H17N5O5 |
| Molecular Weight | 335.32 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
| Nitrogen Atoms | 5 |
Related Cytarabine Standards
- Cytarabine Impurity 26 (CAS 10212-22-3)
- Cytarabine Monophosphate (CAS 7075-11-8)
- Cytarabine Impurity 2 (CAS 14057-18-2)
- Cytarabine Impurity 31 (CAS 169687-80-3)
- Cytarabine impurity 37 (CAS CATO-C4X-200537)
- Cytarabine Impurity 33 (CAS CATO-C4X-200533)
- Cytarabine Impurity 34 (CAS CATO-C4X-200534)
- Cytarabine Impurity 13 (CAS CATO-C4X-200513)
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