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1562421-66-2

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1562421-66-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1562421-66-2 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,5,6,2,4,2 and 1 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1562421-66:
(9*1)+(8*5)+(7*6)+(6*2)+(5*4)+(4*2)+(3*1)+(2*6)+(1*6)=152
152 % 10 = 2
So 1562421-66-2 is a valid CAS Registry Number.

1562421-66-2Downstream Products

1562421-66-2Relevant articles and documents

4 α-acyloxy -2 the [...] (2 the [...], the 6 [...] ), 2 α-halogenated podophyllotoxin derivatives, and their preparation and use

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Paragraph 0092-0095, (2017/02/28)

The invention discloses a series of new 4alpha-acyloxy-2'(2',6'),2alpha-polyhalogenated podophyllotoxin derivatives and a preparation method thereof. The chemical general formula of the series of 4alpha-acyloxy-2'(2',6'),2alpha-polyhalogenated podophyllot

Stereoselective synthesis of 2α-chloropicropodophyllotoxins and insecticidal activity of their esters against oriental armyworm, mythimna separata walker

Fan, Lingling,Guo, Yong,Zhi, Xiaoyan,Yu, Xiang,Xu, Hui

, p. 3726 - 3733 (2014/05/20)

As part of ongoing efforts to discover new natural-product-based insecticidal agents, in the present study, an efficient method for the stereoselective α-chlorination at the C-2 position of 2′(2′, 6′)-(di)halogenopodophyllotoxin derivatives was first developed. Subsequently, a series of novel esters of 2α-chloro-2′(2′, 6′)-(di)halogenopicropodophyllotoxin with modified C, D, and E rings of podophyllotoxin were smoothly obtained. Finally, all of the title compounds were tested against the pre-third-instar larvae of oriental armyworm (Mythimna separata Walker) at 1 mg/mL. It was found that besides their 2′-halogen-substituted E ring, the stereoselective α-chlorination at the C-2 position of 2′(2′,6′)-(di)halogenopodophyllotoxins was also related to the chlorination reagents. Especially 2α-chloro- 4α-(benzoyl)oxy-2′-chloropicropodophyllotoxin (6e) and 2α-chloro-4α-(2-chlorophenylacyl)oxy-2′- bromopicropodophyllotoxin (8f) showed the most potent insecticidal activities, with final mortality rates of >60%. For 4α-(alkylacyl)oxy derivatives of 2α-chloro-2′(2′,6′)-(di)halogenopicropodophyllotoxin, the effect of the length of their side chain at the C-4 position of podophyllotoxin skeleton on the insecticidal activity was not very obvious. For 4α-(arylacyl)oxy derivatives of 2α-chloro-2′-chloro/ bromopicropodophyllotoxin, an electronic effect of the substituents on their phenyl ring at the C-4 position of podophyllotoxin skeleton on the insecticidal activity was observed.

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