M/Z: 644.4166


Hit 3 annotations:  PS(14:0/14:0)_[M+H-2H2O]+; O-Methylganoderic acid O_[M-H2O+NH4]+; Acetyl-pepstatin_[M+H]+


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 644.4166
NovoCell ID m/z Mass Window Metabolite Ranking Anatomy Context
MSI_000022483 Unreliable 644.4166 644.4166 ~ 644.4166
MzDiff: none		 PS(14:0/14:0) (BioDeep_00000032557)
Formula: C34H66NO10P (679.4424)		 1.68 (100%) Mus musculus
[UBERON:0004250] upper arm bone
MSI_000057027 Unreliable 644.4129 644.4129 ~ 644.4129
MzDiff: none		 Acetyl-pepstatin (BioDeep_00000175684)
Formula: C31H57N5O9 (643.4156)		 1.45 (100%) Homo sapiens
[UBERON:0007779] transudate

Found 3 Sample Hits
Metabolite Species Sample
PS(14:0/14:0)

Formula: C34H66NO10P (679.4424)
Adducts: [M+H-2H2O]+ (Ppm: 18.6) 		Mus musculus (Left upper arm)
357_l_total ion count
Resolution: 50μm, 97x131

Description

Diseased
O-Methylganoderic acid O

Formula: C37H56O9 (644.3924)
Adducts: [M-H2O+NH4]+ (Ppm: 10.1) 		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.
Acetyl-pepstatin

Formula: C31H57N5O9 (643.4156)
Adducts: [M+H]+ (Ppm: 15.5) 		Homo sapiens (esophagus)
LNTO22_1_4
Resolution: 17μm, 82x80

Description