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90717-70-7

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90717-70-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 90717-70-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,7,1 and 7 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 90717-70:
(7*9)+(6*0)+(5*7)+(4*1)+(3*7)+(2*7)+(1*0)=137
137 % 10 = 7
So 90717-70-7 is a valid CAS Registry Number.

90717-70-7Downstream Products

90717-70-7Relevant articles and documents

Semi-synthesis and Structure–Activity Relationship of Neuritogenic Oleanene Derivatives

Bian, Linglin,Cao, Shining,Cheng, Lihong,Nakazaki, Atsuo,Nishikawa, Toshio,Qi, Jianhua

supporting information, p. 1972 - 1977 (2018/09/06)

(3S,4R)-23,28-Dihydroxyolean-12-en-3-yl (2E)-3-(3,4-dihydroxyphenyl)acrylate (1 a), which possesses significant neuritogenic activity, was isolated from the traditional Chinese medicine (TCM) plant, Desmodium sambuense. To confirm the structure and to assess biological activity, we semi-synthesized 1 a from commercially available oleanolic acid. A series of novel 1 a derivatives was then designed and synthesized for a structure–activity relationship (SAR) study. All synthetic derivatives were characterized by analysis of spectral data, and their neuritogenic activities were evaluated in assays with PC12 cells. The SAR results indicate that the number and position of the hydroxy groups on the phenyl ring and the triterpene moiety, as well as the length of the (saturated or unsaturated) alkyl chain that links the phenyl ring with the triterpene critically influence neuritogenic activity. Among all the tested compounds, 1 e [(3S,4R)-23,28-dihydroxyolean-12-en-3-yl (2E)-3-(3,4,5-trihydroxyphenyl)acrylate] was found to be the most potent, inducing significant neurite outgrowth at 1 μm.

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