一二三四区视频,亚洲少妇熟女色,日本久热无码视频网,欧美国产日韩大尺度,亚洲a视频,久久少妇一区二区,日韩999无码视频,刺激久久久久久久,啊啊啊啊不要啊在线

Welcome to chemicalbook!
Chinese English Japanese Germany Korea
010-86108875
Try our best to find the right business for you.
Do not miss inquiry messages Please log in to view all inquiry messages.

Welcome back!

ChemicalBook CAS DataBase List 1314003-47-8
1314003-47-8

1314003-47-8 synthesis

6synthesis methods
1383804-99-6

1383804-99-6
0 suppliers
inquiry

22669-27-8 Synthesis
4-AMINOBENZOIC ACID HCL

22669-27-8
30 suppliers
$77.50/250mg

1314003-47-8

1314003-47-8
10 suppliers
inquiry

-

Yield:-

Reaction Conditions:

with trifluoroacetic acid in tetrahydrofuran at 35 - 40; for 22 h;

Steps:

4

Example 4Coupling of the Acyl Imidazole Derivative of Meptazinol with 4-Aminobenzoic Acid 0.1 g of the acyl imidazole derivative of meptazinol and 1.2 eq 4-aminobenzoic acid (hydrochloride salt) were suspended in 10 vol of THF, TFA (2 eq) was added and the mixture was heated at 35 to 40° C. for 22 hours. This provided meptazinol PABA carbamate with 90.4% conversion as determined by HPLC.

References:

US2012/165520,2012,A1 Location in patent:Page/Page column 17

1314003-47-8 Related Search:

诸暨市| 乐山市| 石楼县| 华亭县| 越西县| 洛宁县| 峨边| 神农架林区| 蓬安县| 安达市| 南澳县| 平湖市| 桑植县| 白朗县| 巍山| 集安市| 长泰县| 陆丰市| 米易县| 松潘县| 花垣县| 南阳市| 吉安市| 义乌市| 阿拉善右旗| 石城县| 松阳县| 唐山市| 桂平市| 英山县| 洪泽县| 凯里市| 定州市| 海口市| 和平区| 夏邑县| 图木舒克市| 响水县| 道孚县| 石阡县| 寿宁县|