Item

Specifications

Description

White to off-white crystalline or crystalline powder

Solubility

Very soluble in dichloromethane, freely soluble in methanol, insoluble in water

Identification

HPLC: The retention time of the major peak of the solution should be consistent with the retention time of the major peak of the reference solution.

Crystal form

I crystal

Water  

≤0.5%

Melting point

131.0℃ ～ 136.0℃

Residue on ignition

≤0.2%

Heavy metals

≤10ppm

Related substances

Single impurity≤0.5%

Total impurities≤1.0%

Residual solvents

Dichloromethane≤600ppm

Acetonitrile≤410ppm

MTBE≤5000ppm

Assay

98.0% ～ 102.0%