天堂VA视频一区二区_色卡网站PROC免费_国产真实乱了露脸在线观看_变态拳头交视频一区二区_国产精品无码A∨精品影院APP_亚洲国产精品无码久久_成年无码AV片在线_亚洲欧美综合国产不卡

聚合物是一個(gè)大型的分子或高分子,很多重復(fù)的子單元組成。聚合物,無(wú)論是天然的還是合成的,都是通過(guò)許多被稱為單體的小分子聚合而產(chǎn)生的。

清空選項(xiàng)
26444-49-5 Diphenyl p-tolyl phosphate
BD12238926444-49-599% (mixture of analogue)
¥71.00100g常備現(xiàn)貨
87630-35-1 1-(Triisopropylsilyl)-1H-pyrrole
BD5191687630-35-195%
¥1587.00100g常備現(xiàn)貨
632-79-1 Tetrabromophthalic anhydride
BD153230632-79-198%
¥78.00100g常備現(xiàn)貨
2467-02-9 2,2'-Methylenediphenol
BD2479392467-02-999%
¥839.001g常備現(xiàn)貨
4415-87-6 Cyclobuta[1,2-c:3,4-c']difuran-1,3,4,6(3aH,3bH,6aH,6bH)-tetraone
BD1225824415-87-695%
¥826.00100g常備現(xiàn)貨
2399-48-6 (Tetrahydrofuran-2-yl)methyl acrylate
BD1534722399-48-698% (GC)(stabilized with MEHQ)
¥142.00500g常備現(xiàn)貨
2455-24-5 (Tetrahydrofuran-2-yl)methyl methacrylate
BD1534792455-24-598% (stabilized with MEHQ)
¥78.00100g常備現(xiàn)貨
582-17-2 2,7-Dihydroxynaphthalene
BD68634582-17-297%
¥163.00100g常備現(xiàn)貨
16218-28-3 2,7-Diiodo-9H-fluorene
BD6863716218-28-398%
¥299.005g常備現(xiàn)貨
6542-37-6 (Tetrahydro-1H-oxazolo[3,4-c]oxazol-7a-yl)methanol
BD564976542-37-697%
¥768.001g常備現(xiàn)貨
126-86-3 2,4,7,9-Tetramethyl-5-decyne-4,7-diol
BD17905126-86-397%
¥79.00100g常備現(xiàn)貨
40307-15-1 2,8-Dibromodibenzo[b,d]thiophene 5,5-dioxide
BD36093840307-15-195%
¥435.001g常備現(xiàn)貨
101-43-9 Cyclohexyl methacrylate
BD122764101-43-998% (stabilized with MEHQ)
¥124.00500g常備現(xiàn)貨
499-81-0 Pyridine-3,5-dicarboxylic acid
BD4459499-81-098% (contains <5%H2O)
¥51.0025g常備現(xiàn)貨
1078-61-1 3-(3,4-Dihydroxyphenyl)propionic acid
BD66871078-61-195%
¥119.005g常備現(xiàn)貨
36978-41-3 2,3,3,4-biphenyl tetracarboxylic dianhydride
BD6473536978-41-398%
¥248.0025g常備現(xiàn)貨
34052-90-9 1,3-Bis(4,5-dihydrooxazol-2-yl)benzene
BD2031934052-90-995%
¥514.00500g常備現(xiàn)貨
128055-74-3 2,2',7,7'-Tetrabromo-9,9'-spirobifluorene
BD17926128055-74-398%
¥1383.00100g常備現(xiàn)貨
596820-83-6 2,5-Dioxopyrrolidin-1-yl 3-(2-(2-(5-(2-oxohexahydro-1H-thieno[3,4-d]imidazol-4-yl)pentanamido)ethoxy)ethoxy)propanoate
BD599562596820-83-698%
¥2149.001g常備現(xiàn)貨
3102-87-2 2,3,5,6-Tetramethyl-1,4-phenylenediamine
BD123153102-87-298%
¥668.0025g常備現(xiàn)貨
32281-36-0 Benzo[1,2-b:4,5-b']dithiophene-4,8-dione
BD22652832281-36-097%
¥49.001g常備現(xiàn)貨
620-93-9 4,4'-Dimethyldiphenylamine
BD15396620-93-998%
¥163.00100g常備現(xiàn)貨
352-87-4 2,2,2-Trifluoroethyl methacrylate
BD63885352-87-498% GC(stabilized with MEHQ)
¥102.00100g常備現(xiàn)貨
131-53-3 (2-Hydroxy-4-methoxyphenyl)(2-hydroxyphenyl)methanone
BD64469131-53-398%
¥77.005g常備現(xiàn)貨
835-11-0 Bis(2-hydroxyphenyl)methanone
BD64471835-11-099%
¥170.005g常備現(xiàn)貨
3458-28-4 (2S,3S,4R,5R)-2,3,4,5,6-Pentahydroxyhexanal
BD203463458-28-495%
¥89.00100g常備現(xiàn)貨
4546-95-6 1H-1,2,3-Triazole-4,5-dicarboxylic acid
BD527984546-95-697%
¥223.001g常備現(xiàn)貨
72707-66-5 2-(Bromomethyl)acrylic acid
BD226672707-66-598%
¥1987.005g常備現(xiàn)貨
138529-46-1 N-(2-(2-(2-Aminoethoxy)ethoxy)ethyl)-5-((3aS,4S,6aR)-2-oxohexahydro-1H-thieno[3,4-d]imidazol-4-yl)pentanamide
BD226669138529-46-198%
¥1639.00250mg常備現(xiàn)貨
539-48-0 1,4-Phenylenedimethanamine
BD5361539-48-098%
¥90.005g常備現(xiàn)貨
1 2 3 4 5 6 7 8 9 ... 38