Acetaminophen Impurity 42 CAS 1075742-56-1
| CAS No. | 1075742-56-1 |
| Molecular Formula | C14H13NO3 |
| Molecular Weight | 243.26 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of Acetaminophen Impurity 42 (C14H13NO3) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Acetaminophen Impurity 42 (CAS 1075742-56-1) is a certified pharmaceutical impurity reference standard with the molecular formula C14H13NO3 and a molecular weight of 243.26 g/mol.
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 manufactures Acetaminophen Impurity 42 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C14H13NO3 |
| Molecular Weight | 243.26 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 chloroform, dichloromethane, ethyl acetate, DMSO |
| 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.) | 1988 |
| Nitrogen Atoms | 1 |
Related Acetaminophen Standards
- Acetaminophen Impurity 39 (CAS 93629-82-4)
- Acetaminophen Impurity 40 (CAS 483303-97-5)
- Acetaminophen Impurity 39 (CAS 51-00-3)
- 4-Acetaminophen-D3 Sulfate (CAS 1020718-78-8)
- Acetaminophen-cysteine (CAS 64014-06-8)
- 4-Acetaminophen Sulfate (CAS 10066-90-7)
- Acetaminophen Impurity 41 (CAS CATO-C4X-121141)
- Acetaminophen Impurity 21 (CAS 801215-24-7)
Recommended Standards
- Eltrombopag Impurity 95 (CAS 2230800-88-9)
- Perindopril Impurity 93 (CAS CATO-C4X-125293)
- Eltrombopag Impurity 94 (CAS 1176777-76-6)
- Ketorolac Impurity 27 (CAS 113502-54-8)
- Vilanterol Impurity 39 (CAS 452339-71-8)
- Osimertinib Impurity 24 (CAS CATO-C4X-204524)
- Trandolapril Impurity 8 (CAS CATO-C4X-17708)
- Hexachlorodimethyl-Sulfone (CAS 3064-70-8)
- Ethyl 8-[4-(morpholinomethyl)-phenyl]-8-oxooctanoate (CAS 898770-89-3)
- Ethoxyquin-D5 (CAS 2140327-71-3)
- 5-((4-Acetamidophenyl)amino)-8-amino-9,10-dioxo-9,10-dihydroanthracene-1,7-disulfonic acid (CAS 93892-19-4)
- 5-Bromo-3-methyl-1-(phenylsulfonyl)-1H-indole (CAS 151417-95-7)
- Methyl 2-(4-(aminomethyl)-2-fluorophenyl)acetate (CAS 2170478-31-4)
- Semaglutide impurity 23 (CAS CATO-C4X-222623)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com