spin 1

MS31 trihydrochloride (2366264-12-0 free base) 是一种有效的、高亲和力和选择性的片段样甲基赖氨酸阅读蛋白 spindlin 1 (SPIN1) 抑制剂。

The Survival of Motor Neurons (SMN) protein participates in RNA splicing. Decreases in SMN, typically a consequence of defects in the smn1 gene, result in the death of motor neurons and lead to the neurodegenerative disease, spinal muscular atrophy (SMA). Cuspin-1 is a small molecule upregulator of SMN that has been shown in vitro to increase levels of SMN in SMA patient fibroblasts by 50% at 18 μM. Its mechanism of action is thought to involve increased phosphorylation of ERK to initiate Ras-Raf-MEK signaling, which results in an increased rate of SMN translation.

RASP-IN-1（compound A）作为一种抗黄斑变性的亲脂性化合物，在兔视网膜中展现生物活性。通过IP途径给予小鼠14C-RASP-IN-1（10 mg kg）后30分钟，测得其眼杯的最大浓度（Cmax）为14.36 μg g。

PROTACKSP-IN-1 (Compound 21) 是一种 PROTAC 的纺锤体驱动蛋白 (KSP) 降解剂，能够在 HCT-116 细胞中以 DC50 为 114.8 nM 的浓度降解 KSP。该化合物抑制 HCT-116 细胞增殖的 IC50 为 10 nM，能够在 G2 M 期阻滞细胞周期，并诱导 HCT-116 细胞凋亡 (apoptosis)。同时，PROTACKSP-IN-1 在小鼠模型中展示了显著的抗肿瘤活性。

DMPO (5,5-Dimethyl-1-pyrroline N-oxide) 是一种亲水自旋诱捕剂，具有细胞渗透性。DMPO 可用于超氧化物检测，可检测超氧阴离子和羟自由基。

Cyclo(L-Leu-L-Trp) is a diketopiperazine metabolite initially derived from Penicillium, exhibiting antibacterial (MICs = 125-1000 µg/ml) and antifungal activities (MICs = 8-64 µg/ml). It also demonstrates antioxidant properties by reducing the production of hydroxy radicals, as evidenced in an electron spin resonance (ESR) spectroscopy assay (IC50 = 1.8 µM). Additionally, Cyclo(L-Leu-L-Trp) has been identified as a bitter compound capable of quickly crossing rat taste cell membranes ex vivo at a 1 mM concentration. Furthermore, it acts as a melatonin receptor agonist in X. laevis melanophores, suppressing cAMP accumulation at a 20 µM concentration, with this effect being negated by the melatonin receptor antagonist luzindole.

2,6-Dichloropurine-9-β-D-riboside is a building block.1,2It has been used in the synthesis of photoaffinity probes for nucleotide binding sites in proteins. 1.Wower, J., Hixson, S.S., Sylvers, L.A., et al.Synthesis of 2,6-diazido-9-(β-D-ribofuranosyl)purine 3',5'-bisphosphate: Incorporation into transfer RNA and photochemical labeling of Escherichia coli ribosomesBioconjug. Chem.5(2)158-161(1994) 2.Seiter, M.S., Bauer, M.P., Bogel, P.D., et al.Synthesis of novel spin-labeled photoaffinity derivatives of NAD+ and ATP and their characterization as coenzymes and substrates of several enzymesSynthesis2269-273(1996)

DEPMPO (5-(Diethoxyphosphoryl)-5-methyl-1-pyrroline-N-oxide) 是生物系统中自旋捕获剂，可用于检测脂质相中的自由基。

CYPMPO is a free radical spin trap with excellent trapping capabilities toward hydroxyl and superoxide radicals in biological and chemical systems. Decay of the superoxide adduct of CYPMPO proceeds in an apparent first order fashion with half-lives of 15 and 51 minutes in a UV-illuminated hydrogen peroxide solution and a hypoxanthine/xanthine oxidase system, respectively. CYPMPO traps superoxide radicals generated by bovine neutrophils as effectively as DEPMPO.[1] The high melting point (126°C), low hygroscopic properties, and long shelf-life in aqueous solutions offer significant practical advantages for use of CYPMPO over DEPMPO and DMPO.