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 Nandrolone
434-22-0

Nandrolone synthesis

5synthesis methods
Nandrolone, 17β-hydroxyester-4-en-3-one (29.1.7), is made from estradiol (28.1.17). The phenol hydroxyl group undergoes methylation by dimethylsulfate in the presence of sodium hydroxide, forming the corresponding methyl ether (29.3.1), and then the aromatic ring is reduced by lithium in liquid ammonia, which forms an enol ether (29.3.2). Hydrolyzing this compound with a mixture of hydrochloric and acetic acids leads to the formation of a keto group, and simultaneous isomerization of the double bond from C5–C10 to position C4–C5 gives the desired nandrolone (29.3.3) [16–19]. Upon necessity of using it in the form of acid esters, the product is acylated by corresponding acid derivatives.

-

Yield:434-22-0 53%

Reaction Conditions:

with zygowilliopsis sp. WY7905 in aq. phosphate buffer at 30; pH=8; for 24 h;Enzymatic reaction;stereoselective reaction;

Steps:

2.9. Transformation of C-18, C-19 and C-21 steroids by the resting cells

General procedure: C-18, C-19 and C-21 steroids (0.75 g/l, 1.5 mg), such as estrone(3), 9-dehydroandrostenedione (7), norandrostenedione (9), estra-4,9-diene-3,17-dione (11), 19-hydroxyandrost-4-ene-3,17-dione(13), etc. separately dissolved in Tween 80 (1% w/v) were addedinto 2 ml of reaction mixtures containing glucose (10 g/l, 10 mg)and resting cells (0.2 g wet weight) resuspended in phosphate buffer(100 mM, pH 8.0). The mixture was shaken at 30 C for 24 h,then worked-up and analyzed as described in Section 2.5.

References:

Liu, Yuanyuan;Wang, Yu;Chen, Xi;Wu, Qiaqing;Wang, Min;Zhu, Dunming;Ma, Yanhe [Steroids,2017,vol. 118,p. 17 - 24]

Nandrolone Related Search:

新沂市| 周口市| 古浪县| 广东省| 铁岭市| 银川市| 迁安市| 淳安县| 长寿区| 开阳县| 灵寿县| 鄂温| 米泉市| 中西区| 广平县| 双城市| 秦皇岛市| 襄汾县| 岚皋县| 南阳市| 高青县| 时尚| 贵定县| 虞城县| 鹤岗市| 永仁县| 乾安县| 红河县| 句容市| 陇西县| 盈江县| 江都市| 延庆县| 吴江市| 南澳县| 乳源| 奉新县| 华池县| 斗六市| 拜泉县| 武汉市|