M/Z: 821.6165

Hit 2 annotations: Thyroxine sulfate_[M+H-2H2O]+; PE(18:4(6Z,9Z,12Z,15Z)/24:1(15Z))_[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 3 Reference Ions Near m/z 821.6165

NovoCell ID	m/z	Mass Window	Metabolite	Ranking	Anatomy Context
MSI_000058065 Reliable	821.6166	821.6165 ~ 821.6168 MzDiff: `1.1 ppm`	PE(18:4(6Z,9Z,12Z,15Z)/24:1(15Z)) (BioDeep_00000030423) Formula: C47H84NO8P (821.5934)	3.22 (100%)	DESI [NOVOCELL:BACKGROUND] blank
MSI_000020874 Reliable	821.6239	821.6239 ~ 821.624 MzDiff: `0.3 ppm`	PE(18:4(6Z,9Z,12Z,15Z)/24:1(15Z)) (BioDeep_00000030423) Formula: C47H84NO8P (821.5934)	5.01 (62%)	Rattus norvegicus [UBERON:0004358] caput epididymis
MSI_000008345 Reliable	821.6245	821.6242 ~ 821.6247 MzDiff: `2.4 ppm`	Thyroxine sulfate (BioDeep_00000027845) Formula: C15H11I4NO7S (856.6435)	6.57 (100%)	Rattus norvegicus [UBERON:0004360] cauda epididymis

Found 10 Sample Hits

Metabolite	Species	Sample
Thyroxine sulfate Formula: C15H11I4NO7S (856.6435) Adducts: [M+H-2H2O]+ (Ppm: 6.3)	Rattus norvegicus (Epididymis)	epik_dhb_head_ito08_43 Resolution: 17μm, 298x106 Description
Thyroxine sulfate Formula: C15H11I4NO7S (856.6435) Adducts: [M+H-2H2O]+ (Ppm: 6.7)	Rattus norvegicus (Epididymis)	epik_dhb_head_ito08_46 Resolution: 17μm, 298x106 Description
PE(18:4(6Z,9Z,12Z,15Z)/24:1(15Z)) Formula: C47H84NO8P (821.5934) Adducts: [M-H2O+NH4]+ (Ppm: 0.2)	Homo sapiens (esophagus)	LNTO22_1_3 Resolution: 75μm, 121x68 Description
PE(18:4(6Z,9Z,12Z,15Z)/24:1(15Z)) Formula: C47H84NO8P (821.5934) Adducts: [M-H2O+NH4]+ (Ppm: 1)	Homo sapiens (esophagus)	LNTO29_16_2 Resolution: 17μm, 95x101 Description
PE(18:4(6Z,9Z,12Z,15Z)/24:1(15Z)) Formula: C47H84NO8P (821.5934) Adducts: [M-H2O+NH4]+ (Ppm: 1.1)	Homo sapiens (esophagus)	LNTO22_1_9 Resolution: 75μm, 89x74 Description
PE(18:4(6Z,9Z,12Z,15Z)/24:1(15Z)) Formula: C47H84NO8P (821.5934) Adducts: [M-H2O+NH4]+ (Ppm: 1.4)	Homo sapiens (esophagus)	LNTO29_16_3 Resolution: 17μm, 108x107 Description
PE(18:4(6Z,9Z,12Z,15Z)/24:1(15Z)) Formula: C47H84NO8P (821.5934) Adducts: [M-H2O+NH4]+ (Ppm: 1.3)	Homo sapiens (esophagus)	LNTO30_8M_5 Resolution: 75μm, 56x54 Description
PE(18:4(6Z,9Z,12Z,15Z)/24:1(15Z)) Formula: C47H84NO8P (821.5934) Adducts: [M-H2O+NH4]+ (Ppm: 0.1)	Homo sapiens (esophagus)	LNTO22_1_7 Resolution: 75μm, 69x54 Description
PE(18:4(6Z,9Z,12Z,15Z)/24:1(15Z)) Formula: C47H84NO8P (821.5934) Adducts: [M-H2O+NH4]+ (Ppm: 0.1)	Homo sapiens (esophagus)	LNTO22_1_8 Resolution: 75μm, 69x61 Description
PE(18:4(6Z,9Z,12Z,15Z)/24:1(15Z)) Formula: C47H84NO8P (821.5934) Adducts: [M-H2O+NH4]+ (Ppm: 2.8)	Homo sapiens (esophagus)	LNTO22_2_2 Resolution: 75μm, 135x94 Description