M/Z: 797.6895

Hit 2 annotations: SM(d18:1/24:0)_[M+H-H2O]+; SM(d19:0/18:1(12Z)-O(9S,10R))_[M+K]+

在BioDeep NovoCell知识数据库中，参考离子总共被划分为4个级别。

Confirmed: 这个参考离子已经通过手动审计得到确认和验证。
Reliable: 这个参考离子可能在特定的解剖组织环境中高度保守。
Unreliable: 这个参考离子具有较高的排名价值，但缺乏可重复性。
Unavailable: 由于排名价值低且缺乏可重复性，这个参考离子不应用于注释。

Found 2 Reference Ions Near m/z 797.6895

NovoCell ID	m/z	Mass Window	Metabolite	Ranking	Anatomy Context
MSI_000052961 Unreliable	797.6808	797.6808 ~ 797.6808 MzDiff: `none`	SM(d19:0/18:1(12Z)-O(9S,10R)) (BioDeep_00000215631) Formula: C42H83N2O7P (758.5938)	3.12 (100%)	DESI [NOVOCELL:BACKGROUND] blank
MSI_000025629 Unreliable	797.6961	797.6961 ~ 797.6961 MzDiff: `none`	Not Annotated	2.27 (0%)	Mus musculus [UBERON:0000913] interstitial fluid

Found 3 Sample Hits

Metabolite	Species	Sample
SM(d18:1/24:0) Formula: C47H95N2O6P (814.6927) Adducts: [M+H-H2O]+ (Ppm: 0.1)	Mus musculus (Lung)	image1 Resolution: 40μm, 187x165 Description Fig. 2 MALDI-MSI data from the same mouse lung tissue analyzed in Fig. 1. A: Optical image of the post-MSI, H&E-stained tissue section. B–D, F–G: Ion images of (B) m/z 796.6855 ([U13C-DPPC+Na]+), (C) m/z 756.5514 ([PC32:0+Na]+), (D) m/z 765.6079 ([D9-PC32:0+Na]+), (F) m/z 754.5359 ([PC32:1+Na]+), and (G) m/z 763.5923 ([D9-PC32:1+Na]+). E, H: Ratio images of (E) [D9-PC32:0+Na]+:[PC32:0+Na]+ and (H) [D9-PC32:1+Na]+:[PC32:1+Na]+. Part-per-million (ppm) mass errors are indicated in parentheses. All images were visualized using total-ion-current normalization and using hotspot removal (high quantile = 99%). DPPC = PC16:0/16:0. U13C-DPPC, universally 13C-labeled dipalmitoyl PC; PC, phosphatidylcholine; MSI, mass spectrometry imaging; H&E, hematoxylin and eosin. Fig 1-3, Fig S1-S3, S5
SM(d19:0/18:1(12Z)-O(9S,10R)) Formula: C42H83N2O7P (758.5938) Adducts: [M+K]+ (Ppm: 10.8)	Homo sapiens (colorectal adenocarcinoma)	439TopL, 409TopR, 429BottomL, 419BottomR-profile Resolution: 17μm, 157x136 Description The human colorectal adenocarcinoma sample was excised during a surgical operation performed at the Imperial College Healthcare NHS Trust. The sample and procedures were carried out in accordance with ethical approval (14/EE/0024).
m/z_797.6815 Formula: - (n/a) Adducts: (Ppm: 0)	Homo sapiens (NA)	160TopL,130TopR,150BottomL,140BottomR-profile Resolution: 17μm, 142x136 Description

Metabolite

Species

Sample

SM(d18:1/24:0)

Formula: C47H95N2O6P (814.6927)
Adducts: [M+H-H2O]+ (Ppm: 0.1)

Mus musculus (Lung)

image1

Resolution: 40μm, 187x165

Description

Fig. 2 MALDI-MSI data from the same mouse lung tissue analyzed in Fig. 1. A: Optical image of the post-MSI, H&E-stained tissue section. B–D, F–G: Ion images of (B) m/z 796.6855 ([U13C-DPPC+Na]+), (C) m/z 756.5514 ([PC32:0+Na]+), (D) m/z 765.6079 ([D9-PC32:0+Na]+), (F) m/z 754.5359 ([PC32:1+Na]+), and (G) m/z 763.5923 ([D9-PC32:1+Na]+). E, H: Ratio images of (E) [D9-PC32:0+Na]+:[PC32:0+Na]+ and (H) [D9-PC32:1+Na]+:[PC32:1+Na]+. Part-per-million (ppm) mass errors are indicated in parentheses. All images were visualized using total-ion-current normalization and using hotspot removal (high quantile = 99%). DPPC = PC16:0/16:0. U13C-DPPC, universally 13C-labeled dipalmitoyl PC; PC, phosphatidylcholine; MSI, mass spectrometry imaging; H&E, hematoxylin and eosin. Fig 1-3, Fig S1-S3, S5

SM(d19:0/18:1(12Z)-O(9S,10R))

Formula: C42H83N2O7P (758.5938)
Adducts: [M+K]+ (Ppm: 10.8)

Homo sapiens (colorectal adenocarcinoma)

439TopL, 409TopR, 429BottomL, 419BottomR-profile

Resolution: 17μm, 157x136

Description

The human colorectal adenocarcinoma sample was excised during a surgical operation performed at the Imperial College Healthcare NHS Trust. The sample and procedures were carried out in accordance with ethical approval (14/EE/0024).

m/z_797.6815

Formula: - (n/a)
Adducts: (Ppm: 0)

Homo sapiens (NA)

160TopL,130TopR,150BottomL,140BottomR-profile

Resolution: 17μm, 142x136

Description