MassBank:KOX00841p

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Ion Frequency

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Purine riboside

IDs and Links
MassBank	Purine riboside
CAS	550-33-4 9030-21-1
Keio ID	P081+

Top 10 Similar Molecules of Purine riboside

[show] Ranking	About scoring
KOX00829p Score:17.45 KOX00799p Score:15.75 KOX00429p Score:13.68 KOX00427p Score:13.68 KOX00245p Score:13.68 KOX00708p Score:11.97 KOX00004p Score:11.97 KOX00780p Score:11.92 KOX00451p Score:11.92 KOX00443p Score:11.92	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
C10H13N4O4 (253)	C5H5N4 (121)	b
C5H5N4 (121)	C4H4N3 (94)	IT

Precursor-Product Relationship

[show] 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。

[hide] KOX00841p	253 C10H13N4O4	121 C5H5N4	94 C4H4N3	69 C4H5O	67 C3H3N2	52 C3H2N
253 C10H13N4O4
121 C5H5N4	C5H8O4
94 C4H4N3	C6H9NO4	CHN
69 C4H5O	C6H8N4O3
67 C3H3N2	C7H10N2O4	C2H2N2	CHN
52 C3H2N	C7H11N3O4	C2H3N3	CH2N2		HN

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