M/Z: 643.4443

Hit 2 annotations: Acetyl-pepstatin_[M-H2O+NH4]+; PA(14:0/18:1(12Z)-O(9S,10R))_[M+H-H2O]+

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 643.4443

NovoCell ID	m/z	Mass Window	Metabolite	Ranking	Anatomy Context
MSI_000008074 Reliable	643.4446	643.4446 ~ 643.4448 MzDiff: `0.8 ppm`	PA(14:0/18:1(12Z)-O(9S,10R)) (BioDeep_00000188006) Formula: C35H65O9P (660.4366)	14.66 (89%)	Rattus norvegicus [UBERON:0004360] cauda epididymis
MSI_000023808 Unreliable	643.4389	643.4389 ~ 643.4389 MzDiff: `none`	Not Annotated	1.13 (0%)	Mus musculus [UBERON:0004263] upper arm skin
MSI_000049527 Unreliable	643.4443	643.4443 ~ 643.4443 MzDiff: `none`	Acetyl-pepstatin (BioDeep_00000175684) Formula: C31H57N5O9 (643.4156)	2.11 (100%)	Mytilus edulis [UBERON:0009120] gill filament
MSI_000051005 Unreliable	643.4443	643.4443 ~ 643.4443 MzDiff: `none`	Acetyl-pepstatin (BioDeep_00000175684) Formula: C31H57N5O9 (643.4156)	0.32 (100%)	Mytilus edulis [UBERON:2001856] gill ray

Found 11 Sample Hits

Metabolite	Species	Sample
Acetyl-pepstatin Formula: C31H57N5O9 (643.4156) Adducts: [M-H2O+NH4]+ (Ppm: 9.2)	Rattus norvegicus (Epididymis)	epik_dhb_head_ito03_18 Resolution: 17μm, 208x104 Description
PA(14:0/18:1(12Z)-O(9S,10R)) Formula: C35H65O9P (660.4366) Adducts: [M+H-H2O]+ (Ppm: 17.7)	Rattus norvegicus (Epididymis)	epik_dhb_head_ito08_43 Resolution: 17μm, 298x106 Description
PA(14:0/18:1(12Z)-O(9S,10R)) Formula: C35H65O9P (660.4366) Adducts: [M+H-H2O]+ (Ppm: 17.5)	Rattus norvegicus (Epididymis)	epik_dhb_head_ito08_44 Resolution: 17μm, 299x111 Description
PA(14:0/18:1(12Z)-O(9S,10R)) Formula: C35H65O9P (660.4366) Adducts: [M+H-H2O]+ (Ppm: 17.5)	Rattus norvegicus (Epididymis)	epik_dhb_head_ito08_46 Resolution: 17μm, 298x106 Description
PA(14:0/18:1(12Z)-O(9S,10R)) Formula: C35H65O9P (660.4366) Adducts: [M+H-H2O]+ (Ppm: 17.5)	Rattus norvegicus (Epididymis)	epik_dhb_head_ito08_47 Resolution: 17μm, 301x111 Description
PA(14:0/18:1(12Z)-O(9S,10R)) Formula: C35H65O9P (660.4366) Adducts: [M+H-H2O]+ (Ppm: 17.5)	Rattus norvegicus (Epididymis)	epik_dhb_head_ito08_48 Resolution: 17μm, 294x107 Description
PA(14:0/18:1(12Z)-O(9S,10R)) Formula: C35H65O9P (660.4366) Adducts: [M+H-H2O]+ (Ppm: 17.5)	Rattus norvegicus (Epididymis)	epik_dhb_head_ito01_04 Resolution: 17μm, 178x91 Description
PA(14:0/18:1(12Z)-O(9S,10R)) Formula: C35H65O9P (660.4366) Adducts: [M+H-H2O]+ (Ppm: 17.5)	Rattus norvegicus (Epididymis)	epik_dhb_head_ito01_03 Resolution: 17μm, 159x110 Description
PA(14:0/18:1(12Z)-O(9S,10R)) Formula: C35H65O9P (660.4366) Adducts: [M+H-H2O]+ (Ppm: 17.7)	Rattus norvegicus (normal)	epik_dhb_head_ito01_05 Resolution: 17μm, 183x105 Description
Acetyl-pepstatin Formula: C31H57N5O9 (643.4156) Adducts: [M-H2O+NH4]+ (Ppm: 9.1)	Rattus norvegicus (Epididymis)	epik_dhb_head_ito03_14 Resolution: 17μm, 205x103 Description
Acetyl-pepstatin Formula: C31H57N5O9 (643.4156) Adducts: [M-H2O+NH4]+ (Ppm: 8.4)	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