Guanosine Impurity 3 CAS 117723-13-4
| CAS No. | 117723-13-4 |
| Molecular Formula | C11H17N5O11P2 |
| Molecular Weight | 457.23 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Guanosine Impurity 3 (C11H17N5O11P2) contains a carbohydrate-derived structure, an amide group, a phosphate ester group. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 457.23 g/mol, it falls into the moderately-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.
CATO supplies Guanosine Impurity 3 (CAS 117723-13-4), a pharmacopoeial impurity reference standard (molecular formula C11H17N5O11P2, MW 457.23 g/mol) used for the identification and quantification of trace impurities in APIs.
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
As a certified reference material (CRM), Guanosine Impurity 3 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.
Physical & Chemical Properties
| Molecular Formula | C11H17N5O11P2 |
| Molecular Weight | 457.23 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| Storage | Store in a cool place (≤25°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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 5 |
Related Guanosine Standards
- Guanosine 5'-Diphosphate (CAS 146-91-8)
- Guanosine Impurity 1 (CAS 69281-33-0)
- Guanosine-<SUP>15</SUP>N<SUB>5</SUB>-5′-monophosphate sodium salt (CAS 1257650-86-4)
- 160385-87-5 guanosine,8-[(4-chlorophenyl)thio]-, cyclic 3',5'-[(s)-hydrogen phosphorothioate] (9ci) (CAS 160385-87-5)
- Guanosine, N-acetyl-, 2′,3′-diacetate (CAS 65360-02-3)
- Guanosine 5'-TriphosphateDISCONTINUED (CAS 86-01-1)
- Guanosine-5-O-(1-thiotriphosphate) (CAS 81570-50-5)
- Guanosine 3,5-cyclic Monophosphorothioate, β-Phenyl-1,N2-etheno-8-bromo-, Rp-Isomer, Sodium Salt - CAS 172806-20-1 - Calbiochem (CAS 172806-20-1)
Recommended Standards
- 3-(Trifluoromethyl)phenyl N-{1-[(2,6-dichlorophenyl)methyl]-2-oxo-1,2-dihydropyridin-3-yl}carbamate (CAS 400084-82-4)
- 8-Chloro-5-(2-((3-chloro-5-(trifluoromethyl)pyridin-2-yl)amino)ethyl)-1-methyl-[1,2,4]triazolo[4,3-a]quinoxalin-4(5H)-one (CAS 303986-22-3)
- 1-[(2,6-Dichlorophenyl)methyl]-6-oxo-N-[4-(trifluoromethoxy)phenyl]-1,6-dihydropyridine-3-carboxamide (CAS 339008-64-9)
- Trametinib impurity 12 (CAS 3018911-27-5)
- Testosterone Impurity 4 (CAS CATO-C4X-24324)
- Tadalafil Impurity 57 (CAS CATO-C4X-108757)
- Promethazine impurity 59 (CAS CATO-C4X-141859)
- tert-Butyl ((cis-4-hydroxycyclohexyl)methyl)carbamate (CAS 943722-09-6)
- Atogepant Impurity 83 (CAS CATO-C4X-328583)
- 2-Methyl-3-(thiophen-2-yl)aniline (CAS 546094-27-3)
- 4-Amino-8-methylthiochroman 1,1-dioxide (CAS 1184534-31-3)
- 2-(4-Isopropoxyphenyl)-5-oxotetrahydrofuran-3-carboxylic acid (CAS 1399663-30-9)
- (thiolan-3-yl)hydrazine dihydrochloride (CAS 1803582-82-2)
- Peptide Impurity 15 (CAS 1227750-69-7)
Why CATO?
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