Thais bitubercularis

Arsenic compounds were examined in three marine gastropods from Thailand, Thais bitubercularis, T. distinguenda, and Manila musiva [160], and the presence of arsenobetaine 54 (93-95% of total extractable arsenic), arsenocholine 55 (3.1-4.6%), tetramethylarsonium ion 53 (0.21-2.2%), a new natural product (67), one unknown arsenic compound (each approx. 0.1%), and an unresolved mixture of arsenic compounds (up to 1 %) were observed. 

Gastropod Thais bitubercularis 131-150 dry major minor tr/minor... 

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