M/Z: 522.3388

Hit 4 annotations: Polysorbate 20_[M]+; Caffeoylferuloylspermidine_[M+K]+; Chenodeoxycholylglutamic acid_[M+H]+; PA(10:0/13:0)_[M]+

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 522.3388

NovoCell ID	m/z	Mass Window	Metabolite	Ranking	Anatomy Context
MSI_000008151 Unreliable	522.3453	522.3452 ~ 522.3454 MzDiff: `0.9 ppm`	Chenodeoxycholylglutamic acid (BioDeep_00000171640) Formula: C29H47NO7 (521.3352)	6.78 (100%)	Rattus norvegicus [UBERON:0004360] cauda epididymis
MSI_000020698 Unreliable	522.3436	522.3432 ~ 522.3438 MzDiff: `2.6 ppm`	Polysorbate 20 (BioDeep_00000035258) Formula: C26H50O10 (522.3404)	4.61 (33%)	Rattus norvegicus [UBERON:0004360] cauda epididymis
MSI_000008499	522.3388	522.3388 ~ 522.3388 MzDiff: `none`	Caffeoylferuloylspermidine (BioDeep_00000023680) Formula: C26H33N3O6 (483.2369)	2.62 (100%)	Rattus norvegicus [UBERON:0004360] cauda epididymis
MSI_000028096 Unreliable	522.3466	522.3466 ~ 522.3466 MzDiff: `none`	Not Annotated	2 (0%)	Macropus giganteus [UBERON:0001891] midbrain

Found 8 Sample Hits

Metabolite	Species	Sample
Polysorbate 20 Formula: C26H50O10 (522.3404) Adducts: [M]+ (Ppm: 6.4)	Rattus norvegicus (Epididymis)	epik_dhb_head_ito03_17 Resolution: 17μm, 208x108 Description 1 male adult wild-type rat was obtained from Inserm U1085 - Irset Research Institute (University of Rennes1, France). Animals were age 60 days and were reared under ad-lib conditions. Care and handling of all animals complied with EU directive 2010/63/EU on the protection of animals used for scientific purposes. The whole epididymis was excised from each animal immediately post-mortem, loosely wrapped rapidly in an aluminum foil and a 2.5% (w/v) carboxymethylcellulose (CMC) solution was poured to embed the epididymis to preserve their morphology. To remove air bubbles, the filled aluminum molds was gently freezed by depositing it on isopentane or dry ice, then on the nitrogen vapors and finally by progressively dipping the CMC/sample coated with aluminum foil into liquid nitrogen (or only flush with liquid nitrogen). Frozen tissues were stored at -80 °C until use to avoid degradation.
m/z_522.3425 Formula: - (n/a) Adducts: (Ppm: 0)	Rattus norvegicus (Epididymis)	epik_dhb_head_ito08_43 Resolution: 17μm, 298x106 Description
Caffeoylferuloylspermidine Formula: C26H33N3O6 (483.2369) Adducts: [M+K]+ (Ppm: 7.9)	Rattus norvegicus (Epididymis)	epik_dhb_head_ito08_44 Resolution: 17μm, 299x111 Description
Chenodeoxycholylglutamic acid Formula: C29H47NO7 (521.3352) Adducts: [M+H]+ (Ppm: 4.6)	Rattus norvegicus (Epididymis)	epik_dhb_head_ito08_48 Resolution: 17μm, 294x107 Description
Polysorbate 20 Formula: C26H50O10 (522.3404) Adducts: [M]+ (Ppm: 6.3)	Rattus norvegicus (normal)	epik_dhb_head_ito01_05 Resolution: 17μm, 183x105 Description
PA(10:0/13:0) Formula: C26H51O8P (522.3321) Adducts: [M]+ (Ppm: 19.5)	Rattus norvegicus (Epididymis)	epik_dhb_head_ito01_06 Resolution: 17μm, 183x103 Description
m/z_522.3466 Formula: - (n/a) Adducts: (Ppm: 0)	Macropus giganteus (Brain)	170321_kangaroobrain-dan3-pos_maxof50.0_med1 Resolution: 50μm, 81x50 Description Sample information Organism: Macropus giganteus (kangaroo) Organism part: Brain Condition: Wildtype Sample growth conditions: Wild
Polysorbate 20 Formula: C26H50O10 (522.3404) Adducts: [M]+ (Ppm: 1.3)	Homo sapiens (esophagus)	LNTO22_1_4 Resolution: 17μm, 82x80 Description