2-Acetoxybenzoic-3,4,5,6-d4 Acid CAS 97781-16-3
| CAS No. | 97781-16-3 |
| Molecular Formula | - |
| Molecular Weight | 184.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-Acetoxybenzoic-3,4,5,6-d4 Acid (CAS 97781-16-3), molecular formula C9H4D4O4 and molecular weight 184.18 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 2-Acetoxybenzoic-3,4,5,6-d4 Acid (C9H4D4O4) contains deuterium isotope labeling, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. 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 184.18 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
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 | C9H4D4O4 |
| Molecular Weight | 184.18 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, 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1984 |
Related Acetoxybenzoic Standards
Recommended Standards
- Thiouric Acid (CAS 2002-60-0)
- Monomethyl Phthalate-d4 (CAS 1276197-40-0)
- pyridine-3-sulfonyl azide (CAS 2432-67-9)
- Methyl 3-ethoxy-1-methyl-1H-pyrazole-5-carboxylate (CAS 1005788-29-3)
- Diethyl 5,5-difluoro-1,3,7,9,10-pentamethyl-5H-4l4,5l4-dipyrrolo[1,2-c:2',1'-f][1,3,2]diazaborinine-2,8-dicarboxylate (CAS 21658-72-0)
- 5(6)-CR6G NHS Ester (CAS 349672-89-5)
- 2,3-Dimethoxy-11h-indeno[1,2-b]quinoline-10-carboxylic acid (CAS 154869-00-8)
- Vosoritide (CAS 1480724-61-5（free base）)
- 5-Chloro-4-hydroxy-2-methylbenzonitrile (CAS 1891175-05-5)
- (4-Ethoxy-phenyl)-(4-methyl-4,5-dihydro-thiazol-2-yl)-amine (CAS 565196-33-0)
- Ethyl 2-[4-(Boc-amino)phenyl]thiazole-4-carboxylate (CAS 494854-19-2)
- 1-Phenyl-1H-pyrrole-2-carbaldehyde (CAS 30186-39-1)
- 2-(3,4-Dimethoxybenzoyl)-1H-indene-1,3(2H)-dione (CAS 374722-15-3)
- Semaglutide Impurity 186 (CAS CATO-C4X-2226186)
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