Hyoscine EP Impurity A CAS 4684-28-0
| CAS No. | 4684-28-0 |
| Molecular Formula | C16H19NO4 |
| Molecular Weight | 289.33 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Hyoscine EP Impurity A.
CATO supplies Hyoscine EP Impurity A (CAS 4684-28-0), a pharmacopoeial impurity reference standard (molecular formula C16H19NO4, MW 289.33 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Hyoscine EP Impurity A (C16H19NO4) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 289.33 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
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 | C16H19NO4 |
| Molecular Weight | 289.33 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 methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 1 |
Related Hyoscine Standards
- Hyoscine EP Impurity B (CAS 535-26-2)
- Hyoscine N-oxide (CAS 97-75-6)
- Hyoscine Butylbromide EP Impurity E (CAS 14861-14-4)
- Hyoscine EP Impurity C（R-isomer） (CAS 17126-67-9)
- Hyoscine Butylbromide EP Impurity E HCl (CAS 22235-98-9)
- Hyoscine Butylbromide EP Impurity C Bromide (CAS 155-41-9)
- Hyoscine Butylbromide EP Impurity F Iodine (CAS CATO-C4X-195812)
- Hyoscine Butylbromide EP Impurity D Bromide (CAS 30269-50-2)
Recommended Standards
- Dopamine Impurity 57 (CAS 16240-59-8)
- Selexipag Impurity 58 (CAS CATO-C4X-196158)
- Letrozole-d4 (CAS 1133712-96-5)
- Upadacitinib Impurity 153 (CAS CATO-C4X-2405153)
- Olaparib Impurity 66 (CAS 40019-44-1)
- Prasugrel EP Impurity A (CAS 1391194-45-8)
- Minoxidil Impurity 21 (CAS 128304-91-6)
- Clindamycin (2R-cis)-Diastereomer 2-Phosphate (CAS 1800297-62-4)
- NPS 2390 (CAS 226878-01-9)
- 6336-45-4 InChI=1/C10H21BO2/c1-4-7-9-12-11(6-3)13-10-8-5-2/h6H,3-5,7-10H2,1-2H boronic acid, ethenyl-, dibutyl ester dibutyl vinylboronate (CAS 6336-45-4)
- (S)-2,2'-Dimethyl-1,1'-binaphthyl (CAS 32587-64-7)
- 4'-Decyl-[1,1'-biphenyl]-4-carbonitrile (CAS 59454-35-2)
- N-(4-Cyclopropoxy-2-isopropylphenyl)methanesulfonamide (CAS 1243377-00-5)
- Human IgE Pentapeptide HEPP (CAS 62087-72-3)
Why CATO?
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