M/Z: 526.3868

Hit 3 annotations: 3alpha-Acetomethoxy-11alpha-oxo-12-ursen-24-oic acid_[M-H2O+NH4]+; Contignasterol_[M+NH4]+; 3,4-dihydroxy-5-all-trans-hexaprenylbenzoate_[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 4 Reference Ions Near m/z 526.3868

NovoCell ID	m/z	Mass Window	Metabolite	Ranking	Anatomy Context
MSI_000057797 Reliable	526.3834	526.383 ~ 526.3839 MzDiff: `3.7 ppm`	Contignasterol (BioDeep_00000177646) Formula: C29H48O7 (508.34)	5.26 (72%)	DESI [NOVOCELL:BACKGROUND] blank
MSI_000008333 Reliable	526.3776	526.3774 ~ 526.3779 MzDiff: `2.1 ppm`	Ilmofosine (BioDeep_00000179956) Formula: C26H56NO5PS (525.3617)	9.64 (75%)	Rattus norvegicus [UBERON:0004360] cauda epididymis
MSI_000049640 Unreliable	526.3868	526.3868 ~ 526.3868 MzDiff: `none`	3alpha-Acetomethoxy-11alpha-oxo-12-ursen-24-oic acid (BioDeep_00000025613) Formula: C33H50O5 (526.3658)	1.74 (100%)	Mytilus edulis [UBERON:0009120] gill filament
MSI_000050805 Unreliable	526.3868	526.3868 ~ 526.3868 MzDiff: `none`	3alpha-Acetomethoxy-11alpha-oxo-12-ursen-24-oic acid (BioDeep_00000025613) Formula: C33H50O5 (526.3658)	0.96 (100%)	Mytilus edulis [UBERON:2001856] gill ray

Found 8 Sample Hits

Metabolite	Species	Sample
3alpha-Acetomethoxy-11alpha-oxo-12-ursen-24-oic acid Formula: C33H50O5 (526.3658) Adducts: [M-H2O+NH4]+ (Ppm: 11)	Homo sapiens (esophagus)	LNTO22_1_3 Resolution: 75μm, 121x68 Description
Contignasterol Formula: C29H48O7 (508.34) Adducts: [M+NH4]+ (Ppm: 18)	Homo sapiens (esophagus)	LNTO29_16_2 Resolution: 17μm, 95x101 Description
3alpha-Acetomethoxy-11alpha-oxo-12-ursen-24-oic acid Formula: C33H50O5 (526.3658) Adducts: [M-H2O+NH4]+ (Ppm: 8.9)	Homo sapiens (esophagus)	LNTO22_1_9 Resolution: 75μm, 89x74 Description
3,4-dihydroxy-5-all-trans-hexaprenylbenzoate Formula: C37H53O4 (561.3944) Adducts: [M+H-2H2O]+ (Ppm: 4)	Homo sapiens (esophagus)	TO39T Resolution: 17μm, 69x81 Description
3alpha-Acetomethoxy-11alpha-oxo-12-ursen-24-oic acid Formula: C33H50O5 (526.3658) Adducts: [M-H2O+NH4]+ (Ppm: 4.3)	Mytilus edulis (gill)	20190202_MS38_Crassostrea_Gill_350-1500_DHB_pos_A25_11um_305x210 Resolution: 11μm, 305x210 Description single cell layer `class_4` is the gill structure cells, metabolite ion 534.2956 is the top representive ion of this type of cell
Contignasterol Formula: C29H48O7 (508.34) Adducts: [M+NH4]+ (Ppm: 17.5)	Homo sapiens (esophagus)	LNTO29_16_3 Resolution: 17μm, 108x107 Description
Contignasterol Formula: C29H48O7 (508.34) Adducts: [M+NH4]+ (Ppm: 19.2)	Homo sapiens (esophagus)	LNTO22_1_7 Resolution: 75μm, 69x54 Description
3alpha-Acetomethoxy-11alpha-oxo-12-ursen-24-oic acid Formula: C33H50O5 (526.3658) Adducts: [M-H2O+NH4]+ (Ppm: 7.9)	Homo sapiens (esophagus)	LNTO22_2_2 Resolution: 75μm, 135x94 Description