| 24小時(shí)熱門版塊排行榜 |
| 2 | 1/1 | 返回列表 |
| 查看: 313 | 回復(fù): 1 | ||
ddlong221金蟲 (小有名氣)
|
[求助]
七烯大環(huán)內(nèi)脂類抗生素怎么溶解??
|
|
七烯大環(huán)內(nèi)脂類抗生素怎么溶解??我買的古曲霉素(Hachimycin)和哈霉素(hamycin)在乙腈,甲醇中溶解不了。在堿性溶液中溶解,但是檢測(cè)不到。請(qǐng)各位幫忙分析下。有做過這方面檢測(cè)的請(qǐng)告知溶解方法! 另,誰有殺假絲菌素D(Candicidin D),可否貢獻(xiàn)點(diǎn)做標(biāo)品? 先謝謝大家了! |
版主 (文壇精英)
老痞
|
Hachimycin Properties: Yellow crystals. Acid reaction. Forms a water-sol sodium salt. Can be pptd as a water-insol salt by acridine derivs such as acriflavine, by sulfa drugs such as homosulfanilamide, by basic antibiotics such as streptomycin base, by enzymes such as papain and lysozyme, by dyes such as methylene blue, and by metallic salts such as CaCl2. LD50 i.p. in mice: 0.05 mg/10-12 g mouse (Hosoya). hamycin Properties: Yellow amorphous powder, no definite mp, decomp 160°. [a]D25+216°. uv max (80% methanol): 383 nm (E1%1cm 916). An amphoteric compd. Almost insol in water, benzene, chloroform, dry lower aliphatic alcohols, ether. Sol in basic solvents such as pyridine, collidine, and in aq lower alcohols. In concd H2SO4 gives stable blue color; no coloration with ferric chloride or with HCl. LD50 i.v. in mice (using sodium carboxymethyl cellulose as a vehicle): 6.16 mg/kg (Williams). Also reported as LD50 i.v. in Swiss mice (using a colloidal suspension): 1.20 mg/kg (Parekh, Dave). |

| 2 | 1/1 | 返回列表 |
| 最具人氣熱帖推薦 [查看全部] | 作者 | 回/看 | 最后發(fā)表 | |
|---|---|---|---|---|
|
[考研] 南京大學(xué)化學(xué)376求調(diào)劑 +3 | hisfailed 2026-03-19 | 6/300 |
|
|---|---|---|---|---|
|
[考研] 317求調(diào)劑 +7 | 申子申申 2026-03-19 | 12/600 |
|
|
[考研] 329求調(diào)劑 +9 | 想上學(xué)吖吖 2026-03-19 | 9/450 |
|
|
[考研] 本人考085602 化學(xué)工程 專碩 +19 | 不知道叫什么! 2026-03-15 | 21/1050 |
|
|
[考研]
|
簡(jiǎn)木ChuFront 2026-03-19 | 8/400 |
|
|
[考研] 一志愿北京化工大學(xué)0703化學(xué)318分,有科研經(jīng)歷,求調(diào)劑 +4 | 一瓶苯甲酸 2026-03-14 | 4/200 |
|
|
[考研] 085700資源與環(huán)境308求調(diào)劑 +11 | 墨墨漠 2026-03-18 | 12/600 |
|
|
[考研] 0703化學(xué)調(diào)劑 ,六級(jí)已過,有科研經(jīng)歷 +13 | 曦熙兮 2026-03-15 | 13/650 |
|
|
[考研] 工科材料085601 279求調(diào)劑 +7 | 困于星晨 2026-03-17 | 9/450 |
|
|
[考研] 0856調(diào)劑,是學(xué)校就去 +8 | sllhht 2026-03-19 | 9/450 |
|
|
[考研] 材料學(xué)碩318求調(diào)劑 +5 | February_Feb 2026-03-19 | 5/250 |
|
|
[考研] 0703化學(xué)調(diào)劑 +10 | 妮妮ninicgb 2026-03-15 | 14/700 |
|
|
[考研] 本科鄭州大學(xué)物理學(xué)院,一志愿華科070200學(xué)碩,346求調(diào)劑 +4 | 我不是一根蔥 2026-03-18 | 4/200 |
|
|
[考研] 0703化學(xué)調(diào)劑,求各位老師收留 +10 | 秋有木北 2026-03-14 | 10/500 |
|
|
[考研] 收復(fù)試調(diào)劑生 +4 | 雨后秋荷 2026-03-18 | 4/200 |
|
|
[考研] 268求調(diào)劑 +8 | 一定有學(xué)上- 2026-03-14 | 9/450 |
|
|
[碩博家園] 湖北工業(yè)大學(xué) 生命科學(xué)與健康學(xué)院-課題組招收2026級(jí)食品/生物方向碩士 +3 | 1喜春8 2026-03-17 | 5/250 |
|
|
[考研] 材料工程專碩274一志愿211求調(diào)劑 +6 | 薛云鵬 2026-03-15 | 6/300 |
|
|
[考研] 機(jī)械專碩325,尋找調(diào)劑院校 +3 | y9999 2026-03-15 | 5/250 |
|
|
[考研] 326求調(diào)劑 +3 | mlpqaz03 2026-03-15 | 3/150 |
|