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The antirachitic activity of previtamin D3

✍ Scribed by K. H. Hanewald; M. P. Rappoldt; J. R. Roborgh

Book ID: 104586376
Publisher: Elsevier Science
Year: 2010
Tongue: English
Weight: 491 KB
Volume: 80
Category: Article
ISSN: 0165-0513
DOI: 10.1002/recl.19610800909

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m.p.= 123-125 "C] from 11. 12 reacts with trimethyloxonium tetrafluoroborate to yield 3,6-bis[bis(methylthio)methylenel-1,4-dimethyl-2,5-bis(methylthio)3,6-dihydropyrazindium bis(tetrafluorob0rate) 13 [83%, orange needles, blackens above 225 "C; UV/VIS (CH,CN): A, , , (lgE)=205 (4.15), 300 (sh, 4.09