A chromene compound having a skeleton represented by the following formula (1) and exhibiting double peak characteristic:
wherein Z is a group represented by any one of the following formulas:
(R1 is an electron donor group having a Hammett constant σp of less than -0.20, with the proviso that when there are a plurality of R1's, R1's may be the same or different, and R2 is a group having a Hammett constant σp of -0.20 to 0, with the proviso that when there are a plurality of R2's, R2's may be the same or different)
and "a" is an integer of 1 to 3, with the proviso that when "a" is 2 or 3, Z's may be the same or different but
cannot be
[EN] MODIFIED THIOXANTHONE PHOTOINITIATORS<br/>[FR] PHOTO-INITIATEURS À THIOXANTHONE MODIFIÉS
申请人:LINTFIELD LTD
公开号:WO2021144582A1
公开(公告)日:2021-07-22
Latent photoinitiator compounds are described, as well as compositions containing such compounds and their uses in photoinitated methods for producing photoresist structured.
[EN] THIOXANTHONE DERIVATIVES, COMPOSITION COMPRISING THE SAME AND PATTERN FORMING METHOD COMPRISING SAID COMPOSITION<br/>[FR] DÉRIVÉS DE THIOXANTHONE, COMPOSITION LES COMPRENANT ET PROCÉDÉ DE FORMATION DE MOTIFS COMPRENANT LADITE COMPOSITION
申请人:LINTFIELD LTD
公开号:WO2020016389A1
公开(公告)日:2020-01-23
Latent photoinitiator compounds are described, as well as compositions containing such compounds and their uses in photoinitated methods for producing photoresist structures.
Orthoester compositions for affinity purification of oligonucleotides
申请人:Agilent Technologies, Inc.
公开号:US11299483B2
公开(公告)日:2022-04-12
Compounds and methods for purifying oligonucleotides such as RNA and DNA. A target oligonucleotide is reacted with an orthoester linker comprising an affinity tag to form an orthoester oligonucleotide-orthoester linker conjugate which is subjected to a purification technique to separate the target oligonucleotide from impurities such as truncated oligonucleotides. The orthoester linker can be then removed under mild conditions to generate the target oligonucleotide in high purity.
用于纯化 RNA 和 DNA 等寡核苷酸的化合物和方法。目标寡核苷酸与包含亲和性标签的正交酯连接体反应,形成正交酯寡核苷酸-正交酯连接体共轭物,该共轭物通过纯化技术从截短寡核苷酸等杂质中分离出目标寡核苷酸。然后在温和的条件下去除正交酯连接体,生成高纯度的目标寡核苷酸。
Cyclic orthoester functions as new protecting groups in nucleosides