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Synthesis and insecticidal activity of nitroguanidine derivatives

✍ Scribed by Uneme, Hideki; Iwanaga, Koichi; Higuchi, Noriko; Kando, Yasuyuki; Okauchi, Tetsuo; Akayama, Atsuo; Minamida, Isao

Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
202 KB
Volume
55
Category
Article
ISSN
1526-498X

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✦ Synopsis

3 Results

The values (24 h) of dimethyl-and di-allyl-LD 50 thiosuünate were comparable, varying from 0.02 mg litre~1 against P. interpunctella to 0.25 mg litre~1 against C. maculatus, although those for thiosulünates were generally lower than those for disulüdes.

In comparison, 24-h values for some clas-LD 50 sical fumigants, tested in the same apparatus against three of the test species, were higher than those for the thiosulünate compounds : they varied from 0.72 mg litre~1 for dibromoethane/C. maculatus to 4.13 mg litre~1 for dichloroethane/S. oryzae and were c 3-40 times higher than those for thiosulünates. In all cases, Lepidoptera were more sensitive to the compounds than Coleoptera.

4 CONCLUSION

In addition to the known nematicidal activity of thiosulünates,15 the results indicate their potential in fumigation of stored products. They appear in fumigation of stored products. They appear to be possible substitutes for methyl bromide. These compounds need to be fully explored in terms of pungency and stability, as the lability of these active substances seem to exist only in the liquid state.16

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