Organolithium
Medchemexpress LLC 1,2:3,5-di-O-isopropylidene-alpha-D-xylofuranose | 20881-04-3 | MFCD03002332 | 98.9% | 230.26 g/mol | C11H18O5 | 1 G
1,2:3,5-Di-O-isopropylidene-α-D-xylofuranose is a protected sugar derivative used as an intermediate and reagent in organic synthesis and carbohydrate chemistry. It is supplied as a white to off-white solid suitable for laboratory research and synthesis applications.
- Useful building block in carbohydrate and nucleoside synthesis.
- Acetal protection (isopropylidene) improves stability and chemoselectivity.
- High purity (98.9%) for reliable reaction performance.
- White to off-white solid, easy to handle and store.
- Molecular formula C11H18O5; CAS number 20881-04-3.
- Available in small research pack sizes, e.g. 1 g.
Medchemexpress LLC S -2- 2- tert-Buto 5g
(S)-2-(2-((tert-Butoxycarbonyl)amino)-3-(1-trityl-1H-imidazol-4-yl)propanamido)-2-methylpropanoic acid (Boc-his(trt)-aib-ohol) is a drug intermediate for synthesis of various active compounds
Medchemexpress LLC N-Fmoc-4-(tert-butoxycarbonylmethoxy)-L-phenylalanine | 181951-92-8 | MFCD07781259 | >98.0% | 517.57 g/mol | C30H31NO7 | 1 G
N-Fmoc-4-(tert-butoxycarbonylmethoxy)-L-phenylalanine is an Fmoc-protected phenylalanine derivative used as a protected amino acid building block for peptide synthesis and chemical research. It features a tert-butoxycarbonyl-protected methoxy substituent at the 4-position of the aromatic ring and is supplied as a solid with formula C30H31NO7 and molecular weight 517.57 g/mol. Typical purity is ≥98.0% and recommended storage is powder: -20°C (up to 3 years) or 4°C (up to 2 years); in solvent: -80°C (up to 6 months) or -20°C (up to 1 month).
- Fmoc-protected amino acid suitable for solid-phase peptide synthesis.
- Boc-protected methoxy group at the 4-position of the aromatic ring.
- Chemical formula C30H31NO7 and molecular weight 517.57 g/mol.
- Purity ≥98.0% by 1H NMR.
- Supplied as a solid; follow recommended powder and solvent storage conditions.
- Intended for research use only.