少妇被猛男粗大的猛进出,亚洲 欧美 动漫 少妇 自拍,日韩免费视频,青春草在线视频免费观看

訂購(gòu)電話:4001650900

Ferulic acid

Cas:
1135-24-6
Molecular Structure:
MDL:
MFCD00004400
Molecular Formula:
C10H10O4;HOC6H3(OCH3)CH=CHCO2H
Molecular Weight:
194.18
Alias:
4-羥基-3-甲氧基肉桂酸,咖啡酸-3-甲醚,3-(4-羥基-3-甲氧基苯基)-2-丙烯酸 3-(4-hydroxy-3-methoxyphenyl)-2-Propenoic acid 4-Hydroxy-3-methoxycinnamic acid
Product order:
Name Specifications Packing Price Delivery
Ferulic acid 分析標(biāo)準(zhǔn)品,≥98% 20mg RMB 93.5 現(xiàn)貨
Ferulic acid 98% 10g RMB 94.6 現(xiàn)貨
Ferulic acid 99% 10g RMB 121 現(xiàn)貨
Ferulic acid 99% 50g RMB 412.5 現(xiàn)貨
Ferulic acid 99% 250g RMB 1485 現(xiàn)貨
Character:
阿魏酸有有順式和反式兩種,順式為黃色油狀物,最大吸收波長(zhǎng)(乙醇)316nm。反式為白色至微黃色正交針狀結(jié)晶,一般系指反式體。溶于乙醇、熱水和乙酸乙酯,稍溶于乙醚,微溶于苯和石油醚。最大吸收波長(zhǎng)(乙醇)236、322nm.有刺激性。
熔點(diǎn):169-173℃
Quality Standard:
本品為天然阿魏酸

項(xiàng)目                                    分析純  
                                        (AR)
外觀Appearance                          白色或類白色結(jié)晶性粉末,無臭無味
純度Purity                              ≥99.0%  
熔點(diǎn)Melting point                       170°C - 173°C
灼燒殘?jiān)麵gnition residue,%             ≤0.1
干燥失重Loss on drying ,%               ≤0.50
重金屬Heavy Metals,%                    ≤10ppm
砷鹽Arsenic,%                           ≤2ppm

項(xiàng)目                                    化學(xué)純  
                                         (CP)
含量assay                               ≥98.0%  
熔點(diǎn)Melting point/℃                    170.0~173.0(2.0)  
乙醇溶解試驗(yàn)Solubility(in alcohol)      合格  
灼燒殘?jiān)黂esidue ignition                ≤0.1%  

Storage:
密封保存。
Related Products
上海紫一試劑廠   ? 2025 All Rights Reserved      備案號(hào):滬ICP備19037119號(hào)-1     
網(wǎng)站地圖:
試劑CAS試劑分類試劑產(chǎn)品實(shí)驗(yàn)儀器耗材分類實(shí)驗(yàn)儀器耗材新聞資訊
   滬公網(wǎng)安備 31012002003055號(hào)