m-PEG9-SH CAS 651042-84-1
| CAS No. | 651042-84-1 |
| Molecular Formula | C19H40O9S |
| Molecular Weight | 444.58 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 444.58 g/mol gives m-PEG9-SH distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
m-PEG9-SH (CAS 651042-84-1), molecular formula C19H40O9S and molecular weight 444.58 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, m-PEG9-SH is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 444.58 g/mol — guide the selection of appropriate sample preparation and analytical techniques.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C19H40O9S |
| Molecular Weight | 444.58 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Stable under recommended storage conditions |
| Degree of Unsaturation (DBE) | 0.0 |
| CAS Registry Year (est.) | 1985 |
| Sulfur Atoms | 1 |
Recommended Standards
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- 2-[(4-tert-Butylphenyl)methanesulfonyl]-1-methyl-4,5-diphenyl-1H-imidazole (CAS 339277-29-1)
- 4-(Pyrrolidin-1-yl)butan-2-amine (CAS 138548-04-6)
- Ketobemidone impurity B (Y0000244) (CAS 64058-44-2)
- 3-(tert-Butyl)-1,2,4-oxadiazole-5-carboxylic Acid (CAS 944906-41-6)
- 5-(Aminomethyl)dihydrofuran-2(3H)-one hydrochloride (CAS 203196-68-3)
- 2-(Trimethylsilyl)ethyl 2-((4,6-dimethoxypyrimidin-2-yl)oxy)-6-morpholinobenzoate (CAS 185398-21-4)
- Pyrrolidine-1-carboximidamide hydrochloride (CAS 49755-46-6)
- Levodopa Impurity 12 (CAS 25520-73-4)
- (R)-tert-Butyl (4-chloro-3-oxo-1-phenylbutan-2-yl)carbamate (CAS 150935-37-8)
- Methyl ((S)-1-((R)-5-(7-(4-(2-((S)-4,4-difluoro-1-((methoxycarbonyl)-L-valyl)pyrrolidin-2-yl)-1H-imidazol-5-yl)phenyl)-1H-naphtho[1,2-d]imidazol-2-yl)-3,3-dimethyl-1,3-azasilolidin-1-yl)-3-methyl-1-oxobutan-2-yl)carbamate (CAS 1334312-52-5)
- Neuropeptide K (human, porcine, rat) trifluoroacetate salt (CAS 96827-05-3)
Why CATO?
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