产品名称

L-焦谷氨酸

CAS NO

98-79-3

中文别名

5-羧基吡咯烷酮;(S)-(-)-2-吡咯烷酮-5-羧酸;5-氧代-L-脯氨酸;L-2-吡咯烷酮-5-羧酸;L-焦性胶氨酸;Α-氨基戊二酸内酰胺;氧化脯氨酸

英文名称

(S)-(-)-2-Pyrrolidone-5-carboxylic acid

英文别名

(S)-(-)-2-Pyrrolidone-5-carboxylic acid

分子式

C₅H₇NO₃

分子量

129.11

EINECS

202-700-3

熔点

160-163°C(lit.)

沸点

453.1oC at 760 mmHg

毒性

急性毒性：大鼠经口LD50：>1mg/kg；          大鼠皮下LD50：>2mg/kg；

Item Standard Appearance White crystalline powder Specific rotation(a)D20 (C=2,H2O) -11.0o to –12.0o Transmittance Not less than 98.0% Melting Point (oC) 158oC to 161 oC Chloride(C1) Not more than 0.02% Ammonium(NH4) Not more than 0.02% Sulfate(SO4) Not more than 0.02% Heavy metals(Pb) Not more than 10ppm Iron(Fe) Not more than 10ppm Arsenic(As2O3) Not more than 1 PPM Loss on drying Not more than 0.50% Residue on ignition Not more than 0.1% Assay 99.0-101.0%