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521-03-9

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521-03-9 Usage

Uses

22,23-Dihydrospinasterol is extracted from Citrullus colocynthis leaves and used as a pesticide against cabbage aphid Brevicoryne brassicae.

Check Digit Verification of cas no

The CAS Registry Mumber 521-03-9 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 5,2 and 1 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 521-03:
(5*5)+(4*2)+(3*1)+(2*0)+(1*3)=39
39 % 10 = 9
So 521-03-9 is a valid CAS Registry Number.
InChI:InChI=1/C29H50O/c1-7-21(19(2)3)9-8-20(4)25-12-13-26-24-11-10-22-18-23(30)14-16-28(22,5)27(24)15-17-29(25,26)6/h11,19-23,25-27,30H,7-10,12-18H2,1-6H3/t20-,21-,22+,23+,25-,26+,27+,28+,29-/m1/s1

521-03-9Downstream Products

521-03-9Relevant articles and documents

Studies on the constituents of Trichosanthes species. I. On the neutral ether extracts of the dried roots of Trichosanthes japonica Regel, Trichosanthes kirilowii Maxim. and Trichosanthes cucumeroides Maxim.

Kanaoka,Yoshizaki,Fujino

, p. 2570 - 2574 (1982)

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24β-ETHYLSTEROL BIOSYNTHESIS: INCORPORATION OF L-METHIONINE IN TISSUE CULTURES OF TRICHOSANTHES KIRILOWII

Uomori, Atsuko,Seo, Shujiro,Iwatani, Kouji,Nakagawa, Yuzo,Takeda, Ken'ichi,Sankawa, Ushio

, p. 3861 - 3864 (2007/10/02)

A maximum of five deuterium atoms was incorporated into the 24β-ethylsterols, 22-dihydro-25-dehydrochondrillasterol and 22-dihydrochondrillasterol, in tissue cultures of trichisanthes kirilowii incubated with L-methionine.The results proved that a 24-ethylidene intermediate is not involved in the biosynthesis of 24β-ethylsterols in T.kirilowii. Key Word Index: Trichosanthes kirilowii; Cucurbitaceae; tissue culture; biosynthesis, phytosterols; 22-dihydrochondrillasterol; 22-dihydro-25-dehydrochondrillasterol; methionine.

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