Aciclovir Impurity 33 CAS CATO-C4X-101033
| CAS No. | CATO-C4X-101033 |
| Molecular Formula | C8H10N6O4 |
| Molecular Weight | 254.20 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
As a process- or degradation-related impurity, Aciclovir Impurity 33 (CAS CATO-C4X-101033, C8H10N6O4) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, Aciclovir Impurity 33 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 254.20 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 | C8H10N6O4 |
| Molecular Weight | 254.20 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 6 |
Related Aciclovir Standards
- Aciclovir Impurity 29 (CAS CATO-C4X-101029)
- Aciclovir Impurity Q (CAS CATO-C4X-101038)
- Aciclovir Impurity 37 (CAS CATO-C4X-101037)
- Aciclovir Impurity 40 (CAS 97151-29-6)
- Aciclovir Impurity 7 (CAS 80685-23-0)
- Aciclovir EP Impurity F (CAS 110104-37-5)
- Aciclovir Impurity 6 (CAS 80685-22-9)
- Aciclovir EP Impurity L (CAS 3056-33-5)
Recommended Standards
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- Caffeine Impurity N5 (CAS 10184-35-7)
- Atorvastatin EP Impurity F(Calcium Salt) (CAS 1105067-87-5)
- Celecoxib Impurity 18 (CAS 2247197-67-5)
- Avatrombopag Impurity 91 (CAS CATO-C4X-223491)
- 2,4-Dimethylpyrrolo[1,2-a]pyrimidine-8-carboxylic acid (CAS 1919049-95-8)
- 4-(Difluoromethoxy)-3-nitrobenzonitrile (CAS 1260776-40-6)
- [(1S)-3,3-difluorocyclopentyl]methanol (CAS 1407991-23-4)
- 【禁售不询】Anthranilic acid (CAS 118-92-3)
- Bisoprolol Impurity 62 Formate (CAS 109791-18-6(free base))
- 2-Amino-1-(4-ethynylphenyl)ethan-1-one (CAS 2229292-26-4)
- [α-Glu](Sidechain trans-position)-Liraglutide (CAS CATO-C4X-199240)
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