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

D-erythro-Pentonic acid, 2-deoxy-4-C-ethynyl-, γ-lactone, 3,5-bis(4-methylbenzoate)

D-erythro-Pentonic acid, 2-deoxy-4-C-ethynyl-, γ-lactone, 3,5-bis(4-methylbenzoate) Struktur
2072080-27-2
CAS-Nr.
2072080-27-2
Englisch Name:
D-erythro-Pentonic acid, 2-deoxy-4-C-ethynyl-, γ-lactone, 3,5-bis(4-methylbenzoate)
Synonyma:
D-erythro-Pentonic acid, 2-deoxy-4-C-ethynyl-, γ-lactone, 3,5-bis(4-methylbenzoate)
CBNumber:
CB29926745
Summenformel:
C23H20O6
Molgewicht:
392.4
MOL-Datei:
2072080-27-2.mol

D-erythro-Pentonic acid, 2-deoxy-4-C-ethynyl-, γ-lactone, 3,5-bis(4-methylbenzoate) Eigenschaften

Siedepunkt:
558.0±50.0 °C(Predicted)
Dichte
1.28±0.1 g/cm3(Predicted)

Sicherheit

D-erythro-Pentonic acid, 2-deoxy-4-C-ethynyl-, γ-lactone, 3,5-bis(4-methylbenzoate) Chemische Eigenschaften,Einsatz,Produktion Methoden

Synthese

D-erythro-Pentonic acid, 2-deoxy-4-C-ethynyl-, γ-lactone, 3,5-bis(4-methylbenzoate) is synthesised by reacting D-erythro-Pentonic acid, 2-deoxy-4-C-ethynyl-, γ-lactone with 4-Methylbenzoyl chloride in a pyridine solution. Yield: 95%. The specific reaction process and steps are as follows[1]:
(1) Add toluoyl chloride (15.2 g) to a solution of (4S,5R)-5-ethynyl-4-hydroxy-5-(hydroxymethyl)dihydrofuran-2(3H)-one (7.5 g) in pyridine (38 mL) at 0 °C.
(2) Stir the resulting mixture for 2 hours at 0 °C.
(3) Add water (45 mL) slowly at 0-5 °C, causing the product to crystallize.
(4) Filter the reaction mixture.
(5) Wash the filter cake with ice water.
(6) Dry the product.
Synthesis of D-erythro-Pentonic acid, 2-deoxy-4-C-ethynyl-, γ-lactone, 3,5-bis(4-methylbenzoate)

D-erythro-Pentonic acid, 2-deoxy-4-C-ethynyl-, γ-lactone, 3,5-bis(4-methylbenzoate) Upstream-Materialien And Downstream Produkte

Upstream-Materialien

Downstream Produkte


D-erythro-Pentonic acid, 2-deoxy-4-C-ethynyl-, γ-lactone, 3,5-bis(4-methylbenzoate) Anbieter Lieferant Produzent Hersteller Vertrieb H?ndler.

Global( 3)Lieferanten
Firmenname Telefon E-Mail Land Produktkatalog Edge Rate
Jinan Carbotang Biotech Co.,Ltd.
+8615866703830
figo.gao@foxmail.com China 8497 58
Unibest Industrial Co.,Ltd.
+86-0574-27855777 +8618758850676
info@unibestcn.com China 271 58
Shanghai Boc Chemical Co.,Ltd 021-34975603-808 18721111801
sales@bocpharma.com China 994 64

  • D-erythro-Pentonic acid, 2-deoxy-4-C-ethynyl-, γ-lactone, 3,5-bis(4-methylbenzoate)
  • 2072080-27-2
Copyright 2019 ? ChemicalBook. All rights reserved
无棣县| 甘孜县| 泰安市| 娱乐| 伊金霍洛旗| 贵港市| 临猗县| 皋兰县| 佛学| SHOW| 山东省| 肥乡县| 洪湖市| 利辛县| 南丹县| 台山市| 佛学| 柳林县| 林州市| 库尔勒市| 文安县| 海门市| 珠海市| 申扎县| 六枝特区| 交城县| 张家川| 宁城县| 正蓝旗| 松原市| 开封市| 镇雄县| 交城县| 星座| 合肥市| 亳州市| 岳西县| 上饶县| 洮南市| 沙田区| 上犹县|