74162-08-6

Basic information

• Product Name: Methyl2,4-Di-O-acetyl-beta-D-xylopyranoside
• Synonyms: Methyl 2,4-di-O-acetyl-b-D-xylopyranoside
• CAS NO: 74162-08-6
• Molecular Formula: C₁₀H₁₆O₇
• Molecular Weight: 248.23
• Mol File: 74162-08-6.mol
• Article Data: 3

Chemical Properties

• Boiling Point: 358.6±42.0 °C(Predicted)
• Appearance: /
• Density: 1.27±0.1 g/cm3(Predicted)
• PKA: 12.61±0.70(Predicted)
• CAS DataBase Reference: Methyl2,4-Di-O-acetyl-beta-D-xylopyranoside(CAS DataBase Reference)
• NIST Chemistry Reference: Methyl2,4-Di-O-acetyl-beta-D-xylopyranoside(74162-08-6)
• EPA Substance Registry System: Methyl2,4-Di-O-acetyl-beta-D-xylopyranoside(74162-08-6)

Safety Data

• Hazardous Substances Data: 74162-08-6(Hazardous Substances Data)

Upstream product

• 108-24-7 acetic anhydride 
• 91-09-8 methyl β-L-arabinopyranoside 
• 13007-37-9 methyl 2,3,4-tri-O-acetyl-β-D-xylopyranoside 
• 193209-35-7 2,2-Dimethyl-propionic acid (2R,3R,4S,5R)-3,5-diacetoxy-2-methoxy-tetrahydro-pyran-4-yl ester 

Downstream Products

• 41897-35-2 methyl 2-mono-O-acetyl-β-D-xylopyranoside 
• 612-05-5 methyl-β-D-xylopyranoside 
• 97133-50-1 Methyl-3-O-benzoyl-α-D-xylopyranosid 
• 86386-88-1 methyl 2,4-di-O-acetyl-3-O-benzoyl-β-D-xylopyranoside 

Relevant articles and documents

Positional specificity of Flavobacterium johnsoniae acetylxylan esterase and acetyl group migration on xylan main chain

A new Flavovacterium johnsoniae isolate encodes an enzyme that is essentially identical with a recently discovered novel acetylxylan esterase, capable of liberating 3-O-acetyl group from 4-O-methyl-D-glucuronic acid-substituted xylopyranosyl (Xylp) residues (Razeq et al., 2018). In addition to deesterification of the 2-O-MeGlcA-substituted Xylp residues in acetylglucuronoxylan, the enzyme acts equally well on doubly acetylated Xylp residues from which it liberates only the 3-O-acetyl groups, leaving the 2-O-acetyl groups untouched. 3-O-Monoacetylated Xylp residues are attacked with a significantly reduced affinity. The resulting 2-O-acetylated xylan was used to investigate for the first time the migration of the 2-O-acetyl group to position 3 within the polysaccharide. In contrast to easy acetyl group migration along the monomeric xylopyranosides or non-reducing-end terminal Xylp residues of xylooligosaccharides, such a migration in the polymer required much longer heating at 100 °C. The specificity of the xylan 3-O-deacetylase was, however, no so strict on acetylated methyl and 4-nitrophenyl xylopyranosides.

Partial acetylation of β-L(and D)-arabinose and methyl β-L(and D)-arabinopyranoside, and related 13C-n.m.r. studies

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