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3068-32-4

Basic Information
CAS No.: 3068-32-4
Name: 2,3,4,6-Tetra-O-acetyl-alpha-D-galactopyranosyl bromide
Article Data: 325
Molecular Structure:
Molecular Structure of 3068-32-4 (2,3,4,6-Tetra-O-acetyl-alpha-D-galactopyranosyl bromide)
Formula: C14H19BrO9
Molecular Weight: 411.203
Synonyms: Galactopyranosylbromide, tetraacetate, a-D- (6CI,7CI,8CI);a-D-Galactopyranosyl bromide, tetraacetate (9CI);1-a-Bromo-2,3,4,6-tetraacetyl-D-galactopyranose;2,3,4,6-Tetra-O-acetyl-a-D-galactopyranosyl bromide;2,3,4,6-Tetra-O-acetyl-a-D-galactosyl bromide;2,3,4,6-Tetraacetyl-a-D-galactopyranosyl bromide;2,3,4,6-Tetraacetyl-a-D-galactosyl bromide;Acetobromo-a-D-galactose;Acetylbromogalactose;Tetra-O-acetyl-a-D-galactopyranosyl bromide;a-Acetobromogalactose;a-Bromotetraacetylgalactose;a-D-Acetobromogalactose;2,3,4,6-Tetra-O-acetyl-alpha-D-galactopyranosyl bromide;
EINECS: 221-324-0
Density: 1.49 g/cm3
Melting Point: 83-85 °C
Boiling Point: 412 °C at 760 mmHg
Flash Point: 203 °C
Solubility: Sparingly soluble in water
Appearance: White crystalline solid
Hazard Symbols: IrritantXi
Risk Codes: 36/37/38
Safety: 26-36-37/39
PSA: 114.43000
LogP: 0.46440
Synthetic route
4163-60-4

β-D-galactose peracetate

3068-32-4

1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside

Conditions
ConditionsYield
With hydrogen bromide; acetic acid at 0 - 20℃;100%
With hydrogen bromide In dichloromethane100%
With bismuth(III) bromide; triethyl-bromo-silane In dichloromethane at 20℃; for 3h;100%
25878-60-8

D-galactose pentaacetate

3068-32-4

1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside

Conditions
ConditionsYield
With hydrogen bromide; acetic acid at 0 - 10℃;100%
With bismuth(III) bromide; trimethylsilyl bromide In dichloromethane Ambient temperature;99%
With bismuth(III) bromide; trimethylsilyl bromide In dichloromethane at 20℃;99%
59-23-4

D-Galactose

64-19-7

acetic acid

3068-32-4

1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside

Conditions
ConditionsYield
With Acetyl bromide at 20℃;100%
2872-65-3, 14581-81-8, 17042-40-9, 84380-06-3, 105260-62-6

4-methoxyphenyl 2,3,4,6-tetra-O-acetyl-β-D-galactopyranoside

3068-32-4

1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside

Conditions
ConditionsYield
With Acetyl bromide; zinc dibromide In dichloromethane at 22℃; for 24h;98%
10257-28-0

D-Galactose

108-24-7

acetic anhydride

3068-32-4

1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside

Conditions
ConditionsYield
Stage #1: D-Galactose With Acetyl bromide In methanol
Stage #2: acetic anhydride With acetic acid
95%
With Acetyl bromide In methanol; acetic acid at 20℃; Darkness;90%
With phosphorus; perchloric acid; bromine81.2%
197158-78-4

1,2,3,4,6-penta-O-acetyl-D-galactopyranose

3068-32-4

1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside

Conditions
ConditionsYield
With hydrogen bromide In dichloromethane; acetic acid at 0 - 20℃;95%

C20H28O9S

3068-32-4

1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside

Conditions
ConditionsYield
With iodine(I) bromide In dichloromethane; toluene at 20℃; for 1h; Molecular sieve; Inert atmosphere;95%
3646-73-9

α-D-galactopyranose

108-24-7

acetic anhydride

3068-32-4

1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside

Conditions
ConditionsYield
Stage #1: α-D-galactopyranose; acetic anhydride With perchloric acid at 5 - 45℃; Inert atmosphere;
Stage #2: With phosphorus; bromine at 20 - 30℃; Inert atmosphere;
94%
3068-32-4

1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside

Conditions
ConditionsYield
With pyridine; (PhO)3P*Br2 In dichloromethane for 0.166667h;90%
With tris(2,2'-bipyridyl)ruthenium dichloride; carbon tetrabromide; tetrabutylammomium bromide In N,N-dimethyl-formamide Schlenk technique; Sealed tube; Inert atmosphere; Irradiation;86%
With hydrogen bromide; acetic anhydride In dichloromethane at 20℃; for 4h;85%
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    Product name: 2,3,4,6-Tetra-O-Acetyl-Alpha-D-Galactopyranosyl Bromide CAS No.:3068-32-4 Molecule Formula:C14H19BrO9 Molecule Weight:411.19 Purity: 99.0% Package: 25kg/drum Description:White crystalline powder Manufacture Standards:Enterprise S

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    Product Name: 2,3,4,6-Tetra-O-acetyl-alpha-D-galactopyranosyl bromide Synonyms: acetobromo-ó-d-galactose;alpha-d-galactopyranosylbromide,tetraacetate;2,3,4,6-Tetra-O-acetyl-a-D-galacopyranosyl bromide;BroMo 2,3,4,6-Tetra-O-acetyl-α

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  • 3068-32-4  CAS NO.3068-32-4

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    3068-32-4 CAS NO.3068-32-4

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Chemistry

Product Name: Tetra-O-acetyl-alpha-D-galactopyranosyl bromide (CAS NO.3068-32-4)


Molecular Formula: C14H19BrO9
Molecular Weight: 411.2g/mol
Mol File: 3068-32-4.mol
Melting Point: 83-85 °C
Boiling point: 412 °C at 760 mmHg
Storage Temperature: -20°C
Flash Point: 203 °C
Density: 1.49 g/cm3
Water Solubility: Sparingly soluble
Surface Tension: 47.9 dyne/cm
Enthalpy of Vaporization: 66.46 kJ/mol
Vapour Pressure: 5.35E-07 mmHg at 25°C
XLogP3-AA: 1.5
H-Bond Donor: 0
H-Bond Acceptor: 9
Structure Descriptors of Tetra-O-acetyl-alpha-D-galactopyranosyl bromide (CAS NO.3068-32-4):
  IUPAC Name: [4,5-diacetyloxy-2-(acetyloxymethyl)-6-bromooxan-3-yl] acetate
  Canonical SMILES: CC(=O)OCC1C(C(C(C(O1)Br)OC(=O)C)OC(=O)C)OC(=O)C
  InChI: InChI=1S/C14H19BrO9/c1-6(16)20-5-10-11(21-7(2)17)12(22-8(3)18)13(14(15)24-10)23-9(4)19/h10-14H,5H2,1-4H3 
  InChIKey: CYAYKKUWALRRPA-UHFFFAOYSA-N
Product Categories: Sugars, Carbohydrates & Glucosides; 13C & 2H Sugars; Carbohydrates & Derivatives 

Safety Profile

Safety Information of Tetra-O-acetyl-alpha-D-galactopyranosyl bromide (CAS NO.3068-32-4):
Hazard Codes: XiIrritant
Risk Statements: 36/37/38 
36:  Irritating to the eyes 
37:  Irritating to the respiratory system 
38:  Irritating to the skin 
Safety Statements: 26-36-37/39
26:  In case of contact with eyes, rinse immediately with plenty of water and seek medical advice 
36:  Wear suitable protective clothing  
37:  Wear suitable gloves  
39:  Wear eye/face protection 
WGK Germany: 3
F: 8-10-21  

Specification

 Tetra-O-acetyl-alpha-D-galactopyranosyl bromide , its CAS NO. is 3068-32-4, the synonyms are EINECS 221-324-0 ; alpha-D-Galactopyranosyl bromide, tetraacetate .