N-Acetyl-S-(2,5-dimethylbenzene)-L-cysteine CAS 581076-70-2
| CAS No. | 581076-70-2 |
| Molecular Formula | C13H17NO3S |
| Molecular Weight | 267.34 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), N-Acetyl-S-(2,5-dimethylbenzene)-L-cysteine 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.
N-Acetyl-S-(2,5-dimethylbenzene)-L-cysteine (CAS 581076-70-2), molecular formula C13H17NO3S and molecular weight 267.34 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, N-Acetyl-S-(2,5-dimethylbenzene)-L-cysteine (C13H17NO3S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. 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 267.34 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 analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C13H17NO3S |
| Molecular Weight | 267.34 g/mol |
| Purity | 97%+ |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1984 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Recommended Standards
- N-Acetyl-S-(2,4-dimethylbenzene)-L-cysteine (CAS 581076-69-9)
- N-Acetyl-S-(3,4-dimethylbenzene)-L-cysteine (CAS 581076-72-4)
- Etoricoxib Impurity 72 (CAS CATO-C4X-108072)
- 4-(3-Methoxypropyl)-5-((3-methyl-1h-pyrazol-1-yl)methyl)-4h-1,2,4-triazole-3-thiol (CAS 1002032-55-4)
- N-(benzo[b]thiophen-3-yl)acetamide (CAS 16810-40-5)
- Atrazine-Desethyl (CAS 6190-65-4)
- Benzyl-PEG4-THP (CAS 1027926-86-8)
- (2S,7S,E)-1,8-Bis((S)-4-benzyl-2-oxooxazolidin-3-yl)-2,7-diisopropyloct-4-ene-1,8-dione (CAS 173153-99-6)
- (2,2-Dimethoxyethyl)(2-methylpropyl)amine (CAS 1179210-15-1)
- tert-Butyl (S)-4-acetyl-2,2-dimethyloxazolidine-3-carboxylate (CAS 785828-28-6)
- 6,8-Dichloro-2-methylimidazo[1,2-a]pyridin-3-amine (CAS 1341633-68-8)
- (Anthracen-9-ylethynyl)trimethylsilane (CAS 104784-61-4)
- (E)-[(6-Bromo-2H-1,3-benzodioxol-5-yl)methylidene][(2,4-dichlorophenyl)methoxy]amine (CAS 477846-76-7)
- D-Thr5-Tirzepatide (CAS CATO-CPTD788926)
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