Ojima:KOX00426n

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Ion Frequency

Prec.-Product

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3-Methylguanine

IDs and Links
MassBank	3-Methylguanine
CAS	2958-98-7
Keio ID	M042-

Top 10 Similar Molecules of 3-Methylguanine

Ranking	About scoring
A071+ Score:9.38 X012+ Score:5.38 P157+ Score:5.38 G088+ Score:5.38 G015+ Score:5.38 D057+ Score:5.38 T027+ Score:4 P081+ Score:4 P049+ Score:4 M110+ Score:4	The similarity score between two molecules is defined as the sum of Shannon entropy of ionic formulas shared by the molecules: $\textstyle - \sum_{p\in shared} \log(\mbox{frequency}(p))$ 代謝物間の類似度スコアは、それらのスペクトルで共有される（アノテートされた）イオン式のシャノン情報量の総和です。

Links

Page list for each fragment
Pages Related to Peak C5H3N4O:   A071+  D057+  G015+  G088+  P157+  X012+   Pages Related to Peak C4H4N3:   A007+  A071+  A237+  C033+  C119+  D055+  F014+  H014+  M035+  M042+  M043+  M054+  M074+  M104+  P075+  Z001+  Z002+  D067+  D069+  D082+  D183+  M030+  M051+  M110+  P049+  P081+  T027+

Annotations

Precursor-Product Relationship

About the PP Table (行列表示について)
The matrix is viewed columnwise. The topmost precursor ion in bold face produces the product ions beneath it. Each formula in matrix cells corresponds to the neutral loss. Blackout cells indicate products that cannot be derived, and orange cells indicate a structurally plausible link produced by cleaving a single chemical bond (in cases of ring-opening, two bonds).	行列は列方向に見ます。最上段太字の前駆イオン(precursor ion)が直下の生成イオン群(product ions)になると解釈します。 行列要素に書かれている組成式はニュートラルロスです。黒は前駆イオンから生成しえない関係、オレンジは分子構造における共有結合1本の切断（開環の場合は2本）で生じる関係を意味します。

KOX00426n	164 C6H6N5O	135 C5H3N4O	122 C5H4N3O	107 C4HN3O	94 C4H4N3	79 C3HN3
164 C6H6N5O
135 C5H3N4O	CH3N
122 C5H4N3O	CH2N2
107 C4HN3O	C2H5N2	CH2N	CH3
94 C4H4N3	C2H2N2O		CO
79 C3HN3	C3H5N2O	C2H2NO	C2H3O	CO	CH3

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