610-05-5, 甲基-beta-木糖苷, Methyl beta-D-xylopyranoside, CAS:610-05-5

Appearance

White crystalline power

Positive

Solubility

Soluble in H₂O and

less soluble in petroleum ether

Complies

Appearance of solution

Dissolve 0.5 gin 10 ml of water,

and the solution should be clear

Complies

NMR and ESI-MS

Should comply

Complies

Identification

IR and TLC

Positive

Melting point

145℃ ~ 150℃

148℃ ~ 150℃

Optical Activity

[α]20/D (in water)

-64 ^o ~ -65^o

-65.4°

Loss Weight On Dryness

Max. 0.5%

Complies

Residue on ignition

Max. 0.5%

0.05%

Heavy metal

Max. 20ppm

Complies

TLC (15%H₂SO₄-C₂H₅OH)

One spot

Complies

Assay

Min. 98%

99.2%