Nonnatural amino acid 3-(4-thiazolyl)-D,L-alanine hydrochloride and its four intermediates were synthesized, their structures were detenmined by IR,NMR,elementary analysis and melting point.

合成了非天然氨基酸3-(4-噻唑基)-D，L-丙氨酸盐酸盐以及三个中间体，分别通过红外光谱、核磁共振、元素分析、点等测试手段得到确证。

The structure and working principle of the devices for melting point measurement by means of thin film comparative method of cryoscopy were introduced.

介绍凝固点下比较法测量点标准物质点的测量装置的成与工作原理。

Nonnatural amino acid 3-(4-thiazolyl)-D,L-alanine hydrochloride and its four intermediates were synthesized, their structures were detenmined by IR,NMR,elementary analysis and melting point.

合成了非天然氨基酸3-(4-噻唑基)-D，L-丙氨酸盐酸盐以及三个中间体，其结构分别通过红外光、共振、元素分析、点等测试手段证。

The structure and working principle of the devices for melting point measurement by means of thin film comparative method of cryoscopy were introduced.

介绍凝固点下降薄层比较法测量点标准物质点的测量装置的构成与工作原理。

Nonnatural amino acid 3-(4-thiazolyl)-D,L-alanine hydrochloride and its four intermediates were synthesized, their structures were detenmined by IR,NMR,elementary analysis and melting point.

合成了非天然氨基酸3-(4-噻唑基)-D，L-丙氨酸盐酸盐以及三个中，结构分别通过红外光谱、核磁共振、元素分析、点等测试手段得到确证。

The structure and working principle of the devices for melting point measurement by means of thin film comparative method of cryoscopy were introduced.

介绍凝固点下降薄法测量点标准物质点的测量装置的构成与工作原理。

Nonnatural amino acid 3-(4-thiazolyl)-D,L-alanine hydrochloride and its four intermediates were synthesized, their structures were detenmined by IR,NMR,elementary analysis and melting point.

合成了非天然酸3-(4-噻唑)-D，L-酸盐酸盐以及三个中间体，其结构分别通过红外光谱、核磁共振、元素分析、等测试手段得到确证。

The structure and working principle of the devices for melting point measurement by means of thin film comparative method of cryoscopy were introduced.

介绍凝固下降薄层比较法测量标准物质测量装置构成与工作原理。

Nonnatural amino acid 3-(4-thiazolyl)-D,L-alanine hydrochloride and its four intermediates were synthesized, their structures were detenmined by IR,NMR,elementary analysis and melting point.

合成了非天然氨基酸3-(4-噻唑基)-D，L-丙氨酸盐酸盐及三个中间体，其结构分别通过红外光谱、核磁共振、元素分析、点等测试手段得到确证。

The structure and working principle of the devices for melting point measurement by means of thin film comparative method of cryoscopy were introduced.

介绍凝固点下降薄层比较法测量点标准物质点的测量装置的构成与工作原理。

Nonnatural amino acid 3-(4-thiazolyl)-D,L-alanine hydrochloride and its four intermediates were synthesized, their structures were detenmined by IR,NMR,elementary analysis and melting point.

合成了非天然氨基酸3-(4-噻唑基)-D，L-丙氨酸盐酸盐以及三个中间体，其结构分别通过红外光谱、核磁共振、元素分析、点等测试手段得到确证。

The structure and working principle of the devices for melting point measurement by means of thin film comparative method of cryoscopy were introduced.

介绍凝固点下降薄层比较法测量点标准物质点的测量装置的构成与工作原理。

Nonnatural amino acid 3-(4-thiazolyl)-D,L-alanine hydrochloride and its four intermediates were synthesized, their structures were detenmined by IR,NMR,elementary analysis and melting point.

合成了非天然氨基酸3-(4-噻唑基)-D，L-丙氨酸盐酸盐个中间体，其结构分别通过红外光谱、核磁共振、元素分析、等测试手段得到确证。

The structure and working principle of the devices for melting point measurement by means of thin film comparative method of cryoscopy were introduced.

介绍凝固下降薄层比较法测标准物质的测装置的构成与工作原理。

Nonnatural amino acid 3-(4-thiazolyl)-D,L-alanine hydrochloride and its four intermediates were synthesized, their structures were detenmined by IR,NMR,elementary analysis and melting point.

合成了非天然氨基酸3-(4-噻唑基)-D，L-丙氨酸盐酸盐以及三个中间体，其结构分别通过红外光谱、核磁共振、元素分析、点等测试手段得到确证。

The structure and working principle of the devices for melting point measurement by means of thin film comparative method of cryoscopy were introduced.

介绍凝固点下降薄层比较法测量点标准物质点的测量装置的构成与工作原。

Nonnatural amino acid 3-(4-thiazolyl)-D,L-alanine hydrochloride and its four intermediates were synthesized, their structures were detenmined by IR,NMR,elementary analysis and melting point.

合成了非天然氨基3-(4-噻唑基)-D，L-丙氨以及三个中间体，其结构分别通过红外光谱、核磁共振、元素分析、点等测试手段得到确证。

The structure and working principle of the devices for melting point measurement by means of thin film comparative method of cryoscopy were introduced.

介绍凝固点下降薄层比较法测量点标点的测量装置的构成与工作原理。