異丙基-β-D-硫代半乳糖苷(IPTG,CAS: 367-93-1)是誘導(dǎo)大腸桿菌乳糖操縱子酶合成的強(qiáng)力誘導(dǎo)物. 在培養(yǎng)基中加入該物10-4克分子時(shí),即可通過(guò)存在于大腸桿菌細(xì)胞膜中的微量半乳糖苷滲透酶而被參入至細(xì)菌體內(nèi). 此外, 在高濃度下使用時(shí), 因它仍能透過(guò)缺少半乳糖苷滲透酶的細(xì)胞, 因而常被用于對(duì)缺少滲透酶的菌株的誘導(dǎo)實(shí)驗(yàn). IPTG的這種性質(zhì)決定了他在生物領(lǐng)域有著極為廣泛的應(yīng)用.
公司科研人員完全憑借自己的能力,經(jīng)過(guò)不斷的優(yōu)化組合,找到了最優(yōu)的工藝路線、最佳的物料配比、催化劑和工藝條件,歷時(shí)5年成功開(kāi)發(fā)了IPTG生產(chǎn)工藝技術(shù),并實(shí)現(xiàn)了工業(yè)化試生產(chǎn),產(chǎn)品質(zhì)量完全達(dá)到國(guó)際領(lǐng)先水平. 該項(xiàng)目填補(bǔ)了國(guó)內(nèi)IPTG的市場(chǎng)空白。
Product name: Isopropyl-beta-D-thiogalactopyranoside (free of dioxane), IPTG
CAS: 367-93-1 F.M.: C9H18O5S F.W.: 238.3
Items | Standards | Results |
Appearance | White crystalline power | Positive |
Solubility | Readily soluble in water, almost insoluble in ether | Complies |
pH (5% w/v in water) | 5 - 8 | 6 |
Appearance of solution | Dissolve 0.5g in 10mLof water, and the solution should be clourless | Complies |
Identification | IR and HPLC | Positive |
M.P. | 110℃ - 122℃ | 118℃ - 122℃ |
Specific optical rotation (C=1 in water) | -31o ~ -33 o | -31.5 o |
Alpha-isomer | Max.0.5% | 0.02% |
Residue on ignition | Max. 0.5% | Complies |
Loss weight on dryness | Max. 1% | Complies |
Heavy metals | Max.20ppm | Complies |
Assay by HPLC | Min. 98% | 99.2% |
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