Ojima:MT000142p

General Index

All Molecules KOX PR PBX COX

Ion Frequency

Prec.-Product

Neutral Loss

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Top 10 Similar Molecules of

Ranking	About scoring
G018+ Score:20.43 M025+ Score:15.59 G006+ Score:15.59 T020+ Score:15.59 T010+ Score:15.59 P092+ Score:15.59 O008+ Score:15.59 G043+ Score:15.59 G019+ Score:15.59 G005+ Score:15.59	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。

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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。

MT000142p	130 C5H8NO3	102 C4H8NO2	84 C4H6NO	74 C3H8NO	56 C3H6N
130 C5H8NO3
102 C4H8NO2	CO
84 C4H6NO	CH2O2	H2O
74 C3H8NO	C2O2	CO
56 C3H6N	C2H2O3	CH2O2	CO	H2O

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