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Table 2 Data for toad # 1 (truncated, see Sup. Info)

From: Alkaloids from single skins of the Argentinian toad Melanophryniscus rubriventris (ANURA, BUFONIDAE): An unexpected variability in alkaloid profiles and a profusion of new structures

Rt(obs.) Rt(corr.) Alkaloid Class Comments
4.63 3.66 169A * Unclass CI 170; C11H23N
5.96 5.02 183C Unclass CI 184; C12H25N; M-CH3 = C11H22N
6.73 5.80 193N * Tri CI 194; C13H23N
6.92 5.99 195G 5,6,8-I CI 196; C13H25N
7.59 6.68* 207N Unclass CI 208; C14H25N
IR νC=CH- 3015 cm-1
8.14 7.24 207X * Unclass C14H25N
8.29 7.39* 205G Iz C14H23N
8.74 7.85 205H Tri CI 206; C14H23N
8.84 7.95 193O * Tri CI 194; C13H23N analog of 193C
16.64 15.91 305B PTX  
16.71 15.99 305I * PTX C19H31NO2
16.84 16.12 307E PTX  
17.36 16.65 341A aPTX  
17.45 16.74 337D * PTX C20H35NO2
18.07 17.37 323A PTX