Tri-O-Acetyl-D-galacta - Names and Identifiers
Name | tri-O-acetyl-D-galactal
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Synonyms | D- threeGalNAcene D-GALACTAL TRIACETATE Tri-O-Acetyl-D-galacta tri-O-acetyl-D-galactal TRI-O-ACETYL-D-GALACTAL Tri-O-Acetyl-D-galactose (-)-TRI-O-ACETYL-D-GALACTAL 3,4,6-tri-O-acetyl-D-galactal 3,4,6-TRI-O-ACETYL-D-GALACTAL (2R,3R,4R,5R,6R)-2-(acetoxymethyl)-5-azido-6-bromotetrahydro-2H-pyran-3,4-diyl diacetate
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CAS | 4098-06-0
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EINECS | 223-859-5 |
InChI | InChI=1/C12H16O7/c1-7(13)17-6-11-12(19-9(3)15)10(4-5-16-11)18-8(2)14/h4-5,10-12H,6H2,1-3H3/t10-,11-,12-/m1/s1 |
Tri-O-Acetyl-D-galacta - Physico-chemical Properties
Molecular Formula | C12H16O7
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Molar Mass | 272.25 |
Density | 1.23 |
Melting Point | 34-38°C(lit.) |
Boling Point | 138-140 °C |
Specific Rotation(α) | -20 º (c=1 CHCl3) |
Flash Point | >230°F |
Water Solubility | Insoluble |
Solubility | Soluble in chloroform at 10mg/ml |
Vapor Presure | 0mmHg at 25°C |
Appearance | Oil or Solid |
Color | Pale Yellow |
Storage Condition | Sealed in dry,2-8°C |
Refractive Index | 1.4645-1.4665 |
MDL | MFCD00064092 |
Use | Important intermediate for liquid and solid phase synthesis of oligosaccharides. |
Tri-O-Acetyl-D-galacta - Risk and Safety
Safety Description | S23 - Do not breathe vapour.
S24/25 - Avoid contact with skin and eyes.
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WGK Germany | 3 |
Tri-O-Acetyl-D-galacta - Introduction
tri-O-acetyl-D-galactal, the chemical formula is C14H18O9, an acetylated derivative of galactose.
Nature:
tri-O-acetyl-D-galactal is a colorless to pale yellow solid with a sweet taste. It has good solubility at room temperature, soluble in ethanol, chloroform and dimethyl sulfoxide and other organic solvents. Its melting point is about 145-149°C.
Use:
tri-O-acetyl-D-galactal is often used as a protecting group in organic synthesis to protect the hydroxyl group. It has a wide range of applications in drug synthesis and biochemical research. In addition, it can also be used as a food additive for providing sweetness.
Preparation Method:
The preparation method of tri-O-acetyl-D-galactal is more complicated, and it is generally necessary to start from galactose. The preparation process includes the steps of esterification, reduction and acetylation of acetic anhydride.
Safety Information:
tri-O-acetyl-D-galactal has relatively low toxicity to human health, but it is still necessary to follow laboratory safety practices and avoid contact with skin, eyes and respiratory tract. When in use, should wear appropriate laboratory protective equipment, avoid ingestion or inhalation. If exposure or ingestion occurs, seek medical attention immediately.
Last Update:2024-04-09 02:00:45