Ojima:PR100383p

General Index

All Molecules KOX PR PBX COX

Ion Frequency

Prec.-Product

Neutral Loss

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2,5-dihydroxy benzoic acid

IDs and Links
MassBank	2,5-dihydroxy benzoic acid
CAS	490-79-9
Keio ID

Top 10 Similar Molecules of 2,5-dihydroxy benzoic acid

Ranking	About scoring
F008+ Score:11.33 N028+ Score:5.94 A191+ Score:5.94 G021+ Score:5.38 R041+ Score:5.38 F014+ Score:5.38 D055+ Score:5.38 B019+ Score:5.38	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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Page list for each fragment
Pages Related to Peak C6H5O2:   A191+  F008+  N028+   Pages Related to Peak C5H5O:   B019+  D055+  F008+  F014+  R041+  G021+

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。

PR100383p	155 C7H7O4	137 C7H5O3	109 C6H5O2	81 C5H5O
155 C7H7O4
137 C7H5O3	H2O
109 C6H5O2	CH2O2	CO
81 C5H5O	C2H2O3	C2O2	CO

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