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TERCEIRÂ REUNIÄO BRASILEIRA CIENCIA DO SOLO

TERCEIRÂ REUNIÄO BRASILEIRA CIENCIA DO SOLO

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186 ANAIS DA TERCEIRA REUNIÂO <strong>BRASILEIRA</strong> DE CIÊNCIA <strong>DO</strong> <strong>SOLO</strong><br />

27 — Derivado da pirimidina<br />

Citosina — isolado por SHOREY e SCHREINER<br />

N = C — NH2<br />

O = C CH<br />

I II<br />

HN — CH<br />

• 28 — Derivado da Piridina — BERTHELOT e ANDRÉ foram os primeiros<br />

a verificar sua presença no solo.<br />

29 — Compostes fosforados orgânicos<br />

a) Acidos nucléicos (Soluçâo a 1 % de NaOH)<br />

H2C — OR<br />

HC — OR O<br />

//<br />

H2C — O — P — OC2H4 — N (CH3)2OH<br />

OH<br />

30 — Derivados do Inositol, isolado da fraçâo "alfa humus", solûvel<br />

em alcalis, por YOSHIDA (116).<br />

a) Inositol<br />

CHOH<br />

b) Acido fitico<br />

BUHC<br />

HUHC<br />

(OH)_pOHc<br />

O<br />

Vo -<br />

«c) Monofosfato de inosita<br />

CHOH<br />

HOHC<br />

CHQH<br />

CHOtf<br />

CHOH

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