异丙基-β-D-硫代半乳糖苷(IPTG,CAS: 367-93-1)是诱导大肠杆菌乳糖操纵子酶合成的强力诱导物. 在培养基中加入该物10-4克分子时,即可通过存在于大肠杆菌细胞膜中的微量半乳糖苷渗透酶而被参入至细菌体内. 此外, 在高浓度下使用时, 因它仍能透过缺少半乳糖苷渗透酶的细胞, 因而常被用于对缺少渗透酶的菌株的诱导实验. IPTG的这种性质决定了他在生物领域有着极为广泛的应用.
公司科研人员完全凭借自己的能力,经过不断的优化组合,找到了最优的工艺路线、最佳的物料配比、催化剂和工艺条件,历时5年成功开发了IPTG生产工艺技术,并实现了工业化试生产,产品质量完全达到国际领先水平. 该项目填补了国内IPTG的市场空白。
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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