Items

Standards

Results

Appearance

A white or slightly yellowish syrup

Positive

Solubility

Soluble in CHCl₃ and

less soluble in petroleum ether

Complies

Appearance of solution

Dissolve0.5gin 10mL of CHCl₃,

and the solution should be clear

Complies

NMR and ESI-MS

Should comply

Complies

Identification

IR and TLC

Positive

Optical Activity

[α]^20/D (c = 3% in CHCl₃)

-58^o ~ -60 ^o

-59.2 ^o

Refractive Index

n20/D

1.4 ~ 1.5

1.46

Density

1.13 ~ 1.15

1.14

Residue on ignition

Max. 0.5%

0.05%

Heavy metal

Max. 20ppm

Complies

TLC (15%H₂SO₄-C₂H₅OH)

One spot

Complies

Assay

Min. 97%

99.2%