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142717-59-7

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142717-59-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 142717-59-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,2,7,1 and 7 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 142717-59:
(8*1)+(7*4)+(6*2)+(5*7)+(4*1)+(3*7)+(2*5)+(1*9)=127
127 % 10 = 7
So 142717-59-7 is a valid CAS Registry Number.

142717-59-7Upstream product

142717-59-7Downstream Products

142717-59-7Relevant articles and documents

BIOTRANSFORMATION OF SESQUITERPENES BY CULTURED CELLS OF CURCUMA ZEDOARIA

Sakui, Norihiro,Kuroyanagi, Masanori,Ishitobi, Yoko,Sato, Makoto,Ueno, Akira

, p. 143 - 148 (2007/10/02)

The transformation of a 10-membered ring sesquiterpene, germacrone, into guaiane-type sesquiterpenes by suspension cultured cells of Curcuma zedoaria was investigated.Germacrone was converted into several sesquiterpenes, some of which were isolated from the Curcuma spp. plants through the key intermediate, (4R,5R)-germacrone 4,5-epoxide, and their structures were determined by spectral and chemical evidence.The configurations of some of the derivatives were opposite to those of the sesquiterpenes isolated from the Curcuma sp plants, C. aromatica, C. longa and C. zedoaria.An eudesmane-type product was also isolated and its structur e was determined.From the structure, the transformation of germacrone through the intermediate, (1S,10S)-germacrone 1,10-epoxide, was supposed and further confirmed by the transformation of germacrone 1,10-epoxide into the same product by acid treatment.The structures of two new products were also determined and their transformation mechanism through curcumenone and dihydrocurcumenone was deduced. Key Word Index - Curcuma zedoaria; Zingiberaceae; cell suspension culture; biotransformation; sesquiterpene; germacrone; guaiane; eudesmane.

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