Misoprostol EP Impurity A (mixture of isomers) CAS 1788085-78-8
| CAS No. | 1788085-78-8 |
| Molecular Formula | C22H38O5 |
| Molecular Weight | 382.53 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Misoprostol EP Impurity A (mixture of isomers) (CAS 1788085-78-8), a pharmacopoeial impurity reference standard (molecular formula C22H38O5, MW 382.53 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C22H38O5, Misoprostol EP Impurity A (mixture of isomers) contains a steroid core, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 382.53 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a certified reference material (CRM), Misoprostol EP Impurity A (mixture of isomers) 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 | C22H38O5 |
| Molecular Weight | 382.53 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1994 |
Related Misoprostol Standards
- Misoprostol Impurity 1 (CAS CATO-C4X-14591)
- Misoprostol EP Impurity B (CAS CATO-C4X-14592)
- Misoprostol EP Impurity E (CAS 58717-36-5)
- Misoprostol (CAS 59122-46-2)
- Misoprostol-d5 (CAS 1337917-44-8)
- Misoprostol Acid (CAS 112137-89-0)
- Misoprostol Acid (Mixture of Diastereomers) (CAS 66792-31-2)
- Misoprostol Impurity 7 (CAS CATO-C4X-14597)
Recommended Standards
- 4'-(4'-Ethyl-[1,1'-bi(cyclohexan)]-4-yl)-3,4-difluoro-1,1'-biphenyl (CAS 139195-63-4)
- (R)-Sulindac Methyl Ester (CAS 929081-61-8)
- Unoprostone (CAS 120373-36-6)
- (Z)-9-((1R,2R,3R,5S)-3,5-Dihydroxy-2-((S,E)-3-hydroxyoct-1-en-1-yl)cyclopentyl)non-7-enoic acid (CAS 57944-39-5)
- Camphor Impurity 12 (CAS 2094735-34-7)
- Brimonidine EP Impurity B (CAS 50358-63-9)
- Elagolix Impurity 108 (CAS 2486454-64-0)
- 2-(Benzo[d][1,3]dioxol-5-yl)-N-(4-methoxybenzyl)-1-oxo-3-(pyridin-3-yl)-1,2,3,4-tetrahydroisoquinoline-4-carboxamide (CAS 1024146-71-1)
- 3-(4-Acetyl-3,5-dimethyl-1H-pyrazol-1-yl)-1-morpholinopropan-1-one (CAS 1006320-23-5)
- tert-Butyl cyclopropylglycinate (CAS 78773-38-3)
- 6-Chloro-1H-pyrrolo[3,2-c]pyridine-3-carboxamide (CAS 1956327-45-9)
- 4-Bromomethyl-2-chloro-3-(trifluoromethyl)pyridine (CAS 1227579-53-4)
- 5-Methoxypyrazolo[1,5-a]pyridine (CAS 877994-06-4)
- Semaglutide impurity 233 (CAS CATO-C4X-2226233)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
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