详情介绍
L-焦谷氨酸
H-Pyr-OH
Cas 号: 【98-79-3】 M D L: MFCD00005272
L-焦谷氨酸 分子式: C5H7NO3 分子量: 129.1
别 名: (S)-(-)-2-吡咯烷酮-5-羧酸,5-羧基吡咯烷酮
L-Pyroglutamic acid
(S)-(−)-2-Pyrrolidone-5-carboxylic acid
(S)-5-Oxo-2-pyrrolidinecarboxylic acid
99% 25g
99% 100g
99% 500g
97% 100g
97% 500g
性 状: 水中溶解度: 10-15% (20°C) ,溶于乙醇和丙酮。
熔点:160 ºC
[α]20D : -10 ° (C=10, H2O)
质量标准: 97%:
外观Appearance 白色至类白色结晶粉末
红外光谱鉴别Infrared spectrometry 和对照匹配
纯度Purity ≥97.0% (GC)
纯度Purity 96.5%-103.5% (中和滴定)
熔点Melting point 157°C - 164°C
比旋光度Specific rotation [a]20/D -8.0 ~ -12.0 °(C=5, H2O)
水分Water <0.5 % (K.F.)
重金属Heavy metals <10 ppm
99%:
外观Appearance 白色至类白色结晶粉末
红外光谱鉴别Infrared spectrometry 和对照匹配
纯度Purity ≥99.0% (GC)
纯度Purity 98.5%-101.5% (中和滴定)
熔点Melting point 160°C - 164°C
比旋光度Specific rotation [a]20/D -9.5 ~ -11.5 °(C=5, H2O)
水分Water <0.05 % (K.F.)
贮 存: 用途 非对称合成砌块。
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