MassBank:KOX00810p

General Index

All Molecules KOX PR PBX COX

Ion Frequency

Prec.-Product

Neutral Loss

Help

Nicotinamide

IDs and Links
MassBank	Nicotinamide
CAS	98-92-0
Keio ID	N001+

Top 10 Similar Molecules of Nicotinamide

Ranking	About scoring
KOX00760p Score:35.33 KOX00462p Score:28.81 KOX00847p Score:26 KOX00788p Score:23.85 KOX00757p Score:23.85 KOX00531p Score:20.57 KOX00826p Score:19.76 KOX00730p Score:19.76 KOX00840p Score:18.38 KOX00745p Score:14.51	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

Annotations

Precursor	Product	Comments
C6H7N2O (123)	C6H4NO (106)	b
C6H7N2O (123)	C5H6NO (96)	c
C6H7N2O (123)	C5H6N (80)	a
C6H7N2O (123)	C5H5N (79)	a,rad.
C6H7N2O (123)	C5H4N (78)	a

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。

KOX00810p	123 C6H7N2O	106 C6H4NO	96 C5H6NO	80 C5H6N	79 C5H5N	78 C5H4N	53 C4H5	52 C3H2N	51 C4H3
123 C6H7N2O
106 C6H4NO	H3N
96 C5H6NO	CHN
80 C5H6N	CHNO		O
79 C5H5N	CH2NO		HO	H
78 C5H4N	CH3NO	CO	H2O	H2	H
53 C4H5	C2H2N2O		CHNO	CHN	CN
52 C3H2N	C3H5NO	C3H2O	C2H4O	C2H4	C2H3	C2H2
51 C4H3	C2H4N2O	C2HNO	CH3NO	CH3N	CH2N	CHN	H2

(pos/neg)<<First Page   (pos/neg)<Previous Page

Next Page>(pos/neg)   Last Page>>(pos/neg)