M/Z: 278.1805


Hit 2 annotations:  alpha-CEHC_[M-H2O+NH4]+; Leucylphenylalanine_[M-H2O+NH4]+


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 278.1805
NovoCell ID m/z Mass Window Metabolite Ranking Anatomy Context
MSI_000056492 Reliable 278.1843 278.1842 ~ 278.1844
MzDiff: 0.8 ppm		 Leucylphenylalanine (BioDeep_00000019170)
Formula: C15H22N2O3 (278.163)		 4.89 (100%) DESI
[NOVOCELL:BACKGROUND] blank
MSI_000057349 Unreliable 278.1866 278.1866 ~ 278.1866
MzDiff: none		 Amitriptyline (BioDeep_00000001424)
Formula: C20H23N (277.183)		 1.11 (100%) Homo sapiens
[UBERON:0007779] transudate

Found 3 Sample Hits
Metabolite Species Sample
alpha-CEHC

Formula: C16H22O4 (278.1518)
Adducts: [M-H2O+NH4]+ (Ppm: 19.5) 		Marker Pen (NA)
3ul_0.8Mpa_RAW_20241016-PAPER PNMK
Resolution: 30μm, 315x42

Description

By writing the four English letters “PNMK” on white paper with a marker pen, and then scanning with a DESI ion source to obtain the scanning result. The signal of the chemical substances on the marker pen used appears on the channel with an m/z value of 322.1918, 323.1953, 546.4010, and etc, from the single cell deconvolution sampling layer class_4. This test data was tested by chuxiaoping from PANOMIX’s R&D laboratory.
Leucylphenylalanine

Formula: C15H22N2O3 (278.163)
Adducts: [M-H2O+NH4]+ (Ppm: 6.8) 		Homo sapiens (esophagus)
LNTO29_16_2
Resolution: 17μm, 95x101

Description

Leucylphenylalanine

Formula: C15H22N2O3 (278.163)
Adducts: [M-H2O+NH4]+ (Ppm: 7.5) 		Homo sapiens (esophagus)
LNTO29_16_3
Resolution: 17μm, 108x107

Description