M/Z: 674.4411

Hit 3 annotations: 13-Demethylspirolide C_[M+H-H2O]+; DG(13:0/LTE4/0:0)_[M+H-2H2O]+; Fasciculic acid C_[M+H-2H2O]+

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 674.4411

NovoCell ID	m/z	Mass Window	Metabolite	Ranking	Anatomy Context
MSI_000023702 Unreliable	674.4453	674.4453 ~ 674.4453 MzDiff: `none`	PE(14:0/20:5(5Z,8Z,11Z,14Z,17Z)) (BioDeep_00000030095) Formula: C39H68NO8P (709.4682)	1.25 (100%)	Mus musculus [UBERON:0004263] upper arm skin
MSI_000024495 Unreliable	674.4397	674.4397 ~ 674.4397 MzDiff: `none`	Fasciculic acid C (BioDeep_00000018926) Formula: C38H63NO11 (709.4401)	1.78 (100%)	Mus musculus [UBERON:0004269] upper arm connective tissue

Found 6 Sample Hits

Metabolite	Species	Sample
13-Demethylspirolide C Formula: C42H61NO7 (691.4448) Adducts: [M+H-H2O]+ (Ppm: 3.2)	Vitis vinifera (Fruit)	grape_dhb_91_1 Resolution: 50μm, 120x114 Description Grape berries fruit, condition: Ripe
DG(13:0/LTE4/0:0) Formula: C39H67NO8S (709.4587) Adducts: [M+H-2H2O]+ (Ppm: 9.4)	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
Fasciculic acid C Formula: C38H63NO11 (709.4401) Adducts: [M+H-2H2O]+ (Ppm: 20)	Mus musculus (Left upper arm)	357_l_total ion count Resolution: 50μm, 97x131 Description Diseased
m/z_674.4341 Formula: - (n/a) Adducts: (Ppm: 0)	Mus musculus (Lung)	image5 Resolution: 40μm, 163x183 Description Supplementary Figure S8. MALDI-MSI data of mouse lung tissue administered with D9-choline and U 13C-DPPC–containing Poractant alfa surfactant (labels administered 18 h prior to sacrifice). Ion images of (a) m/z 796.6856 ([U13C-DPPC+Na]+), (b) m/z 756.5154 [PC32:0+Na]+ and (c) m/z 765.6079 ([D9-PC32:0+Na]+). (d) Overlay image of [U13C-DPPC+Na]+ (red) and [D9-PC32:0+Na]+ (green). Parts per million (ppm) mass errors are indicated in parentheses. All images were visualised using totalion-current normalisation and using hotspot removal (high quantile = 99%). DPPC = PC16:0/16:0.
13-Demethylspirolide C Formula: C42H61NO7 (691.4448) Adducts: [M+H-H2O]+ (Ppm: 0.3)	Mus musculus (Lung)	image5 Resolution: 40μm, 163x183 Description Supplementary Figure S8. MALDI-MSI data of mouse lung tissue administered with D9-choline and U 13C-DPPC–containing Poractant alfa surfactant (labels administered 18 h prior to sacrifice). Ion images of (a) m/z 796.6856 ([U13C-DPPC+Na]+), (b) m/z 756.5154 [PC32:0+Na]+ and (c) m/z 765.6079 ([D9-PC32:0+Na]+). (d) Overlay image of [U13C-DPPC+Na]+ (red) and [D9-PC32:0+Na]+ (green). Parts per million (ppm) mass errors are indicated in parentheses. All images were visualised using totalion-current normalisation and using hotspot removal (high quantile = 99%). DPPC = PC16:0/16:0.
13-Demethylspirolide C Formula: C42H61NO7 (691.4448) Adducts: [M+H-H2O]+ (Ppm: 0.6)	Homo sapiens (esophagus)	LNTO22_2_1 Resolution: 75μm, 89x88 Description