MassBank:KOX00429p

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All Molecules KOX PR PBX COX

Ion Frequency

Prec.-Product

Neutral Loss

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7-Methylguanine

IDs and Links
MassBank	7-Methylguanine
CAS	578-76-7
Keio ID	M043+

Top 10 Similar Molecules of 7-Methylguanine

Ranking	About scoring
KOX00427p Score:44.3 KOX00111p Score:25.49 KOX00846p Score:21.93 KOX00443p Score:21.79 KOX00721p Score:21.37 KOX00780p Score:19.95 KOX00315p Score:16.42 KOX00876p Score:16.05 KOX00799p Score:15.56 KOX00841p Score:13.68	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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Annotations

Precursor	Product	Comments
C6H8N5O (166)	C6H5N4O (149)	b
C6H8N5O (166)	C5H6N3O (124)	a,-NH3
C6H8N5O (166)	C5H5N4 (121)	d,NH3
C6H8N5O (166)	C5H3N2O (107)	e
C6H8N5O (166)	C4H3N2 (79)	c

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。

KOX00429p	166 C6H8N5O	149 C6H5N4O	124 C5H6N3O	121 C5H5N4	107 C5H3N2O	94 C4H4N3	79 C4H3N2	69 C3H5N2	67 C3H3N2	55 C2H3N2	54 C3H4N	53 C2HN2
166 C6H8N5O
149 C6H5N4O	H3N
124 C5H6N3O	CH2N2
121 C5H5N4	CH3NO	CO
107 C5H3N2O	CH5N3	CH2N2	H3N
94 C4H4N3	C2H4N2O	C2HNO	CH2O	CHN
79 C4H3N2	C2H5N3O	C2H2N2O	CH3NO	CH2N2	CO	HN
69 C3H5N2	C3H3N3O	C3N2O	C2HNO	C2N2
67 C3H3N2	C3H5N3O	C3H2N2O	C2H3NO	C2H2N2	C2O	CHN	C	H2
55 C2H3N2	C4H5N3O	C4H2N2O	C3H3NO	C3H2N2	C3O	C2HN	C2	CH2	C
54 C3H4N	C3H4N4O	C3HN3O	C2H2N2O	C2HN3		CN2		HN
53 C2HN2	C4H7N3O	C4H4N2O	C3H5NO	C3H4N2	C3H2O	C2H3N	C2H2	CH4	CH2	H2

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