NPASS Compound

Natural Product: NPC305223

Natural Product ID	NPC305223
Common Name ? The InCHIKey will be temporarily assigned as the "Common Name" if no IUPAC name or alternative short name is available.	1-O-(11'z-Octadecenyl)-Sn-Glycero-3-Phosphocholine
IUPAC Name	[(2R)-2-hydroxy-3-[(Z)-octadec-11-enoxy]propyl] 2-(trimethylazaniumyl)ethyl phosphate
Synonyms
Synthetic Gene Cluster	n.a.
ChEMBL Identifier	CHEMBL480671
PubChem CID	21672239
Chemical Classification	CHEMONTID:0000000 [Organic compounds] [CHEMONTID:0000012] Lipids and lipid-like molecules [CHEMONTID:0000256] Glycerophospholipids [CHEMONTID:0002213] Glycerophosphocholines [CHEMONTID:0001414] Monoalkylglycerophosphocholines

The Chemical Classification was calculated by Classyfire, a software for chemical taxonomy calculation. Reference: DOI:10.1186/s13321-016-0174-y.

Chemical Representations

RDKit 3D 88 87 0 0 0 0 0 0 0 0999 V2000 13.1078 1.3404 1.8348 C 0 0 0 0 0 0 0 0 0 0 0 0 12.1771 1.8759 2.8947 C 0 0 0 0 0 0 0 0 0 0 0 0 11.2375 0.8368 3.4392 C 0 0 0 0 0 0 0 0 0 0 0 0 10.3804 0.2899 2.3148 C 0 0 0 0 0 0 0 0 0 0 0 0 9.4317 -0.7534 2.8173 C 0 0 0 0 0 0 0 0 0 0 0 0 8.5825 -1.2964 1.6711 C 0 0 0 0 0 0 0 0 0 0 0 0 7.7974 -0.2308 1.0579 C 0 0 0 0 0 0 0 0 0 0 0 0 6.4754 -0.2469 1.0252 C 0 0 0 0 0 0 0 0 0 0 0 0 5.6280 -1.3053 1.5836 C 0 0 0 0 0 0 0 0 0 0 0 0 4.7430 -1.9821 0.5306 C 0 0 0 0 0 0 0 0 0 0 0 0 3.8221 -0.9477 -0.1093 C 0 0 0 0 0 0 0 0 0 0 0 0 2.9361 -1.5716 -1.1498 C 0 0 0 0 0 0 0 0 0 0 0 0 2.0490 -0.5115 -1.7448 C 0 0 0 0 0 0 0 0 0 0 0 0 1.1227 -1.0947 -2.8136 C 0 0 0 0 0 0 0 0 0 0 0 0 0.2566 0.0214 -3.3698 C 0 0 0 0 0 0 0 0 0 0 0 0 -0.6857 -0.4434 -4.4211 C 0 0 0 0 0 0 0 0 0 0 0 0 -1.6547 -1.4938 -3.9749 C 0 0 0 0 0 0 0 0 0 0 0 0 -2.5476 -1.0569 -2.8435 C 0 0 0 0 0 0 0 0 0 0 0 0 -3.2840 0.0481 -3.2574 O 0 0 0 0 0 0 0 0 0 0 0 0 -4.1477 0.5293 -2.2759 C 0 0 0 0 0 0 0 0 0 0 0 0 -4.8710 1.7065 -2.8551 C 0 0 2 0 0 0 0 0 0 0 0 0 -5.8363 2.3627 -1.9205 C 0 0 0 0 0 0 0 0 0 0 0 0 -6.8555 1.4899 -1.5533 O 0 0 0 0 0 0 0 0 0 0 0 0 -8.0956 2.4042 -0.8565 P 0 0 0 0 0 0 0 0 0 0 0 0 -9.2236 2.5969 -1.8668 O 0 0 0 0 0 0 0 0 0 0 0 0 -7.5555 3.9252 -0.3595 O 0 0 0 0 0 1 0 0 0 0 0 0 -8.6900 1.5924 0.4843 O 0 0 0 0 0 0 0 0 0 0 0 0 -9.9807 1.1427 0.2955 C 0 0 0 0 0 0 0 0 0 0 0 0 -10.5973 0.6183 1.5473 C 0 0 0 0 0 0 0 0 0 0 0 0 -9.9191 -0.4880 2.1545 N 0 0 0 0 0 4 0 0 0 0 0 0 -8.6197 -0.0949 2.6575 C 0 0 0 0 0 0 0 0 0 0 0 0 -10.7361 -0.8650 3.3204 C 0 0 0 0 0 0 0 0 0 0 0 0 -9.8357 -1.6481 1.2938 C 0 0 0 0 0 0 0 0 0 0 0 0 -5.5921 1.3261 -3.9901 O 0 0 0 0 0 0 0 0 0 0 0 0 12.8939 1.8842 0.8741 H 0 0 0 0 0 0 0 0 0 0 0 0 12.9916 0.2581 1.6464 H 0 0 0 0 0 0 0 0 0 0 0 0 14.1624 1.4973 2.1607 H 0 0 0 0 0 0 0 0 0 0 0 0 12.7694 2.2743 3.7504 H 0 0 0 0 0 0 0 0 0 0 0 0 11.5684 2.7271 2.4912 H 0 0 0 0 0 0 0 0 0 0 0 0 10.5642 1.3233 4.1463 H 0 0 0 0 0 0 0 0 0 0 0 0 11.8188 0.0243 3.9315 H 0 0 0 0 0 0 0 0 0 0 0 0 9.8207 1.1478 1.9020 H 0 0 0 0 0 0 0 0 0 0 0 0 11.0035 -0.1966 1.5302 H 0 0 0 0 0 0 0 0 0 0 0 0 8.7678 -0.3742 3.6273 H 0 0 0 0 0 0 0 0 0 0 0 0 9.9600 -1.6303 3.2433 H 0 0 0 0 0 0 0 0 0 0 0 0 8.0532 -2.1535 2.0703 H 0 0 0 0 0 0 0 0 0 0 0 0 9.3000 -1.6762 0.8996 H 0 0 0 0 0 0 0 0 0 0 0 0 8.3668 0.6017 0.6121 H 0 0 0 0 0 0 0 0 0 0 0 0 6.0280 0.6350 0.5245 H 0 0 0 0 0 0 0 0 0 0 0 0 4.8726 -0.7657 2.2423 H 0 0 0 0 0 0 0 0 0 0 0 0 6.0978 -2.0177 2.2536 H 0 0 0 0 0 0 0 0 0 0 0 0 5.3152 -2.5309 -0.2162 H 0 0 0 0 0 0 0 0 0 0 0 0 4.0893 -2.6915 1.0715 H 0 0 0 0 0 0 0 0 0 0 0 0 3.2326 -0.4125 0.6402 H 0 0 0 0 0 0 0 0 0 0 0 0 4.4894 -0.2164 -0.6191 H 0 0 0 0 0 0 0 0 0 0 0 0 2.3521 -2.3749 -0.6511 H 0 0 0 0 0 0 0 0 0 0 0 0 3.5146 -2.0495 -1.9641 H 0 0 0 0 0 0 0 0 0 0 0 0 2.6791 0.2883 -2.1543 H 0 0 0 0 0 0 0 0 0 0 0 0 1.4147 -0.0562 -0.9509 H 0 0 0 0 0 0 0 0 0 0 0 0 0.5582 -1.9401 -2.4240 H 0 0 0 0 0 0 0 0 0 0 0 0 1.7902 -1.4783 -3.6267 H 0 0 0 0 0 0 0 0 0 0 0 0 -0.2076 0.6196 -2.5682 H 0 0 0 0 0 0 0 0 0 0 0 0 0.9813 0.7231 -3.8787 H 0 0 0 0 0 0 0 0 0 0 0 0 -1.2384 0.4248 -4.8183 H 0 0 0 0 0 0 0 0 0 0 0 0 -0.0963 -0.8657 -5.2577 H 0 0 0 0 0 0 0 0 0 0 0 0 -1.1670 -2.4649 -3.7537 H 0 0 0 0 0 0 0 0 0 0 0 0 -2.3296 -1.6999 -4.8510 H 0 0 0 0 0 0 0 0 0 0 0 0 -2.0364 -0.9128 -1.8946 H 0 0 0 0 0 0 0 0 0 0 0 0 -3.2896 -1.8814 -2.6902 H 0 0 0 0 0 0 0 0 0 0 0 0 -4.8945 -0.2534 -1.9836 H 0 0 0 0 0 0 0 0 0 0 0 0 -3.5659 0.7740 -1.3844 H 0 0 0 0 0 0 0 0 0 0 0 0 -4.1357 2.4857 -3.1697 H 0 0 0 0 0 0 0 0 0 0 0 0 -6.3044 3.2601 -2.3697 H 0 0 0 0 0 0 0 0 0 0 0 0 -5.3349 2.7270 -0.9812 H 0 0 0 0 0 0 0 0 0 0 0 0 -10.0376 0.3847 -0.5282 H 0 0 0 0 0 0 0 0 0 0 0 0 -10.6157 1.9934 -0.0601 H 0 0 0 0 0 0 0 0 0 0 0 0 -11.6727 0.4045 1.3650 H 0 0 0 0 0 0 0 0 0 0 0 0 -10.5901 1.4496 2.3033 H 0 0 0 0 0 0 0 0 0 0 0 0 -8.5408 1.0041 2.7332 H 0 0 0 0 0 0 0 0 0 0 0 0 -8.4829 -0.5103 3.6902 H 0 0 0 0 0 0 0 0 0 0 0 0 -7.7926 -0.5174 2.0459 H 0 0 0 0 0 0 0 0 0 0 0 0 -10.4291 -1.8762 3.6590 H 0 0 0 0 0 0 0 0 0 0 0 0 -11.7948 -0.8679 3.0078 H 0 0 0 0 0 0 0 0 0 0 0 0 -10.5974 -0.1014 4.1270 H 0 0 0 0 0 0 0 0 0 0 0 0 -10.6517 -1.6651 0.5443 H 0 0 0 0 0 0 0 0 0 0 0 0 -8.8844 -1.7237 0.7384 H 0 0 0 0 0 0 0 0 0 0 0 0 -9.9524 -2.5578 1.9426 H 0 0 0 0 0 0 0 0 0 0 0 0 -5.8323 2.1125 -4.5391 H 0 0 0 0 0 0 0 0 0 0 0 0 1 2 1 0 2 3 1 0 3 4 1 0 4 5 1 0 5 6 1 0 6 7 1 0 7 8 2 0 8 9 1 0 9 10 1 0 10 11 1 0 11 12 1 0 12 13 1 0 13 14 1 0 14 15 1 0 15 16 1 0 16 17 1 0 17 18 1 0 18 19 1 0 19 20 1 0 20 21 1 0 21 22 1 0 22 23 1 0 23 24 1 0 24 25 2 0 24 26 1 0 24 27 1 0 27 28 1 0 28 29 1 0 29 30 1 0 30 31 1 0 30 32 1 0 30 33 1 0 21 34 1 0 1 35 1 0 1 36 1 0 1 37 1 0 2 38 1 0 2 39 1 0 3 40 1 0 3 41 1 0 4 42 1 0 4 43 1 0 5 44 1 0 5 45 1 0 6 46 1 0 6 47 1 0 7 48 1 0 8 49 1 0 9 50 1 0 9 51 1 0 10 52 1 0 10 53 1 0 11 54 1 0 11 55 1 0 12 56 1 0 12 57 1 0 13 58 1 0 13 59 1 0 14 60 1 0 14 61 1 0 15 62 1 0 15 63 1 0 16 64 1 0 16 65 1 0 17 66 1 0 17 67 1 0 18 68 1 0 18 69 1 0 20 70 1 0 20 71 1 0 21 72 1 6 22 73 1 0 22 74 1 0 28 75 1 0 28 76 1 0 29 77 1 0 29 78 1 0 31 79 1 0 31 80 1 0 31 81 1 0 32 82 1 0 32 83 1 0 32 84 1 0 33 85 1 0 33 86 1 0 33 87 1 0 34 88 1 0 M CHG 2 26 -1 30 1 M END

Standard InCHIKey	HEEMBWYZIJABCR-ZXAYODBVSA-N
Standard InCHI	InChI=1S/C26H54NO6P/c1-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19-20-22-31-24-26(28)25-33-34(29,30)32-23-21-27(2,3)4/h10-11,26,28H,5-9,12-25H2,1-4H3/b11-10-/t26-/m1/s1
SMILES	CCCCCC/C=CCCCCCCCCCCOC[C@H](COP(=O)([O-])OCC[N+](C)(C)C)O

Calculated Properties

Physi-Chem Properties

Molecular Weight:	507.37	Volume:	539.181 ? Van der Waals volume.
Dense:	0.941	LogP:	1.741 ? The logarithm of the n-octanol/water distribution coefficients.
logD7.4:	2.144 ? The logarithm of the n-octanol/water distribution coefficient at pH=7.4.	LogS:	-0.814 ? The logarithm of aqueous solubility value.
Rotatable Bonds:	25.0	Rigid Bonds:	2.0
TPSA:	88.05 ? Topological Polar Surface Area.	H-Bond Acceptor:	7.0
H-Bond Donor:	1.0	Rings:	0.0
Heavy Atoms:	8.0

MedChem Properties

QED Drug-Likeness Score:	0.075	GASA:	1.0 ? GASA represents the probability of being difficult to synthesize, ranging from 0 to 1.
Synthetic Accessibility Score:	3.913	Fsp³:	0.923
MCE-18:	7.0 ? MCE-18 stands for medicinal chemistry evolution.MCE-18≥45 is considered a suitable value.	Lipinski Rule-of-5:	Rejected
Pfizer Rule:	Rejected	GSK Rule:	Accepted
Golden Triangle Rule:	Accepted	BMS Rule:	1
Chelating Alert:	0	PAINS Alert:	0
Colloidal aggregators:	0.413	Fluc inhibitor:	0.0 ? The fluc inhibitor value is the probability of being fLuc inhibitors, within the range of 0 to 1.
Blue fluorescence:	0.004 ? The blue fluorescence value is the probability of being blue fluorescence, within the range of 0 to 1	Green fluorescence:	0.0 ? The green fluorescence value is the probability of being green fluorescence, within the range of 0 to 1
Reactive compounds:	0.137	Promiscuous compounds:	0.256

ADMET Properties (ADMETlab3.0)

ADMET: Absorption

Caco-2 Permeability:	-5.443	MDCK Permeability:	-4.931
Pgp-inhibitor:	0.081	Pgp-substrate:	0.0
PAMPA:	0.0 ? The experimental data for Peff was logarithmically transformed (logPeff). Molecules with log Peff values below 2.0 were classified as low-permeability (Category 0), while those with log Peff values exceeding 2.5 were classified as high-permeability (Category 1).	Human Intestinal Absorption (HIA):	0.496
20% Bioavailability (F20%):	0.156	30% Bioavailability (F30%):	0.999
50% Bioavailability (F50%):	0.995

ADMET: Distribution

Blood-Brain-Barrier Penetration (BBB):	0.0	MRP1:	0.912
Plasma Protein Binding (PPB):	98.014%	Volume Distribution (VD):	-0.236
Fu:	1.168% ? The fraction unbound in plasms.	OATP1B1 inhibitor:	1.0
OATP1B3 inhibitor:	1.0	BCRP inhibitor:	0.378
BSEP inhibitor:	1.0

ADMET: Metabolism

CYP1A2-inhibitor:	0.0	CYP1A2-substrate:	1.0
CYP2C19-inhibitor:	0.0	CYP2C19-substrate:	0.0
CYP2C9-inhibitor:	0.006	CYP2C9-substrate:	0.0
CYP2D6-inhibitor:	0.281	CYP2D6-substrate:	0.651
CYP3A4-inhibitor:	0.0	CYP3A4-substrate:	1.0
CYP2B6-substrate:	0.0	CYP2C8-inhibitor:	0.995
HLM stability:	0.003 ? Human liver microsomal (HLM) stability. Category 0: stable+ (HLM > 30 min); Category 1: unstable- (HLM ≤ 30 min). The output value is the probability of human liver microsomal instability, where a value closer to 1 indicates a higher likelihood of instability.

ADMET: Excretion

Clearance (CL):

5.016

Half-life (T1/2):

0.801

ADMET: Toxicity

hERG Blockers:	0.334	hERG Blockers (10um):	0.565
Human Hepatotoxicity (H-HT):	0.856	Drug-induced Liver Injury (DILI):	0.0
AMES Toxicity:	0.022	Rat Oral Acute Toxicity:	0.408
Maximum Recommended Daily Dose:	0.978	Skin Sensitization:	1.0
Carcinogencity:	0.444	Eye Corrosion:	1.0
Eye Irritation:	0.998	Respiratory Toxicity:	0.986
Drug-induced Neurotoxicity:	0.025	Ototoxicity:	0.005
Hematotoxicity:	0.003	Drug-induced Nephrotoxicity:	0.999
Genotoxicity:	0.01	RPMI-8226 Immunitoxicity:	0.024
A549 Cytotoxicity:	0.0	Hek293 Cytotoxicity:	0.025
BCF:	0.876 ? Bioconcentration factors are used for considering secondary poisoning potential and assessing risks to human health via the food chain. The unit is -log10[(mg/L)/(1000*MW)].	IGC50:	4.362 ? 48 hour Tetrahymena pyriformis IGC50. The unit of IGC50 is -log10[(mg/L)/(1000*MW)].
LC50DM:	6.094 ? 48 hour Daphnia magna LC50. The unit of LC50DM is -log10[(mg/L)/(1000*MW)].	LC50FM:	3.013 ? 96 hour fathead minnow LC50. The unit of LC50FM is -log10[(mg/L)/(1000*MW)].

Species Source

Organism ID	Organism Name	Taxonomy Level	Family	SuperKingdom	Isolation Part	Collection Location	Collection Time	Reference
NPO85	Spirastrella abata	Species	Spirastrellidae	Eukaryota	n.a.	n.a.	n.a.	PMID[10579872]
NPO85	Spirastrella abata	Species	Spirastrellidae	Eukaryota	n.a.	n.a.	n.a.	PMID[11325244]
NPO85	Spirastrella abata	Species	Spirastrellidae	Eukaryota	n.a.	n.a.	n.a.	PMID[12088447]
NPO85	Spirastrella abata	Species	Spirastrellidae	Eukaryota	n.a.	n.a.	n.a.	PMID[22182501]
NPO85	Spirastrella abata	Species	Spirastrellidae	Eukaryota	n.a.	n.a.	n.a.	Database[COCONUT]

Note for Reference:
In addition to directly collecting NP source organism data from primary literature (where reference will provided as NCBI PMID or DOI links), NPASS also integrated them from below databases:
☉ UNPD: Universal Natural Products Database [PMID: 23638153].
☉ StreptomeDB: a database of streptomycetes natural products [PMID: 33051671].
☉ TM-MC: a database of medicinal materials and chemical compounds in Northeast Asian traditional medicine [PMID: 26156871].
☉ TCM@Taiwan: a Traditional Chinese Medicine database [PMID: 21253603].
☉ TCMID: a Traditional Chinese Medicine database [PMID: 29106634].
☉ TCMSP: The traditional Chinese medicine systems pharmacology database and analysis platform [PMID: 24735618].
☉ HerDing: a herb recommendation system to treat diseases using genes and chemicals [PMID: 26980517].
☉ MetaboLights: a metabolomics database [PMID: 27010336].
☉ FooDB: a database of constituents, chemistry and biology of food species [www.foodb.ca].

NP Quantity Composition/Concentration

Organism ID	Organism Name	Organism Material Preparation	Organism Part	NP Quantity (Standard)	NP Quantity (Minimum)	NP Quantity (Maximum)	Quantity Unit	Reference

Note for Reference:
In addition to directly collecting NP quantitative data from primary literature (where reference will provided as NCBI PMID or DOI links), NPASS also integrated NP quantitative records for specific NP domains (e.g., NPS from foods or herbs) from domain-specific databases. These databases include:
☉ DUKE: Dr. Duke's Phytochemical and Ethnobotanical Databases.
☉ PHENOL EXPLORER: is the first comprehensive database on polyphenol content in foods [PMID: 24103452], its homepage can be accessed at here.
☉ FooDB: a database of constituents, chemistry and biology of food species [www.foodb.ca].

Biological Activity

Activity Type	# Activity
IC50	1

Activity Type	# Activity
Others	1

Molecular-level activity

Target ID	Target Type	Target Name	Target Organism	Activity Type	Activity Relation	Value	Unit	Reference

In vitro activity

Target ID	Target Type	Target Name	Target Organism	Activity Type	Activity Relation	Value	Unit	Reference
NPT2	Others	Unspecified	n.a.	IC50	=	125.0	ug.mL-1	PMID[26046820]

In vivo activity

Target ID	Target Type	Target Name	Target Organism	Activity Type	Activity Relation	Value	Unit	Reference

Experimental ADME

Experiment Model	Experiment Tissue	ADME Type	ADME Relation	ADME Value	ADME Unit	Reference

Experimental Toxicity

Quantitative toxicity

Experiment Model	Experiment Organism	Toxicity Type	Toxicity Relation	Toxicity Value	Toxicity Unit	Reference

Common Abbreviations:
LC: Lethal Concentration; LD: Lethal Dose; LT:Lethal Time; NOAEL: No-observed-adverse-effect Level; BMDL: Benchmark Dose Lower Confidence Limit; BMD: Benchmark Dose; BMC:Benchmark Concentration; LOAEL: Lowest Observed Adverse Effect Level; RfD:Reference Dose; RfC:Reference Concentration; MRL: Minimal Risk Level; MEG: Maximum Exposure Guideline; PAC: Protective Action Criteria

Categorical toxicity labels

Hepatotoxicity	Carcinogenicity	Mutagenicity	Cardiotoxicity	Respiratory Toxicity	Eye Irritation	Endocrine Disruption

Note for Reference:
In addition to directly collecting NP quantitative data from primary literature (where reference will provided as NCBI PMID or DOI links), NPASS also integrated NP toxicity records from domain-specific databases. These databases include:
☉ ToxValDB: a curated database that compiles quantitative toxicity values for chemicals from diverse public sources to support toxicological research and risk assessment.
☉ TOXRIC: a comprehensive, free-to-access, online database providing toxicological/feature data. The toxicity labels are retrieved from this database. [PMID: 36400569]

Chemically structural similarity

Similar Active Natural Products in NPASS

Top-200 similar NPs were calculated against the active-NP-set (includes approximately 50,000 NPs with experimentally-derived bioactivity available in NPASS)

Similarity is measured using the Tanimoto coefficient (Tc) , which compares the binary fingerprints of two molecules. Tc is calculated as the intersection divided by the union of '1' bits in the fingerprints, ranging from 0 to 1, with 1 indicating highest similarity.

● The left chart: Distribution of similarity level between NPC305223 and all remaining natural products in the NPASS database.
● The right table: Most similar natural products (Tc>=0.5 or Top200).

range	Tanimoto Coefficient
0-0.1	23527
0.1-0.2	25221
0.2-0.3	1035
0.3-0.4	46
0.4-0.5	5
0.5-0.6	11
0.6-0.7	5
0.7-0.8	0
0.8-0.85	2
0.85-0.9	2
0.9-0.95	2
0.95-1	0

Similarity Score	Similarity Level	Natural Product ID
0.9167	High Similarity	NPC127145
0.9167	High Similarity	NPC475930
0.8696	High Similarity	NPC328786
0.8696	High Similarity	NPC201338
0.84	Intermediate Similarity	NPC137620
0.84	Intermediate Similarity	NPC474675
0.7451	Intermediate Similarity	NPC238646
0.7143	Intermediate Similarity	NPC474674
0.6909	Remote Similarity	NPC178758
0.6909	Remote Similarity	NPC192326
0.6909	Remote Similarity	NPC322769
0.6071	Remote Similarity	NPC474627
0.6042	Remote Similarity	NPC478931
0.5818	Remote Similarity	NPC170963
0.5818	Remote Similarity	NPC324165
0.5818	Remote Similarity	NPC114640
0.5818	Remote Similarity	NPC126366
0.5818	Remote Similarity	NPC608333
0.5417	Remote Similarity	NPC63804
0.5417	Remote Similarity	NPC482659
0.5306	Remote Similarity	NPC473872
0.5303	Remote Similarity	NPC325936
0.5161	Remote Similarity	NPC474702
0.5152	Remote Similarity	NPC82799

Similar Clinical/Approved Drugs

Similarity level is defined by Tanimoto coefficient (Tc) between two molecules.

● The left chart: Distribution of similarity level between NPC305223 and all drugs/candidates.
● The right table: Most similar clinical/approved drugs (Tc>=0.5 or Top200).

range	Tanimoto Coefficient
0-0.1	6621
0.1-0.2	2417
0.2-0.3	91
0.3-0.4	14
0.4-0.5	3
0.5-0.6	3
0.6-0.7	1
0.7-0.8	0
0.8-0.85	0
0.85-0.9	0
0.9-0.95	0
0.95-1	0

Similarity Score	Similarity Level	Drug ID	Developmental Stage
0.6042	Remote Similarity	NPD4840	Phase 4
0.5636	Remote Similarity	NPD6950	Phase 2
0.5614	Remote Similarity	NPD7347	Clinical (unspecified phase)
0.5179	Remote Similarity	NPD6949	Clinical (unspecified phase)

Bioactivity similarity

Similar Natural Products in NPASS

Similarity level is defined by Bioactivity similarity was calculated based on bioactivity descriptors of compounds. The bioactivity descriptors were calculated by a recently developed AI algorithm Chemical Checker (CC) [Nature Biotechnology, 38:1087–1096, 2020; Nature Communications, 12:3932, 2021], which evaluated bioactivity similarities at five levels:
☉ A: chemistry similarity;
☉ B: biological targets similarity;
☉ C: networks similarity;
☉ D: cell-based bioactivity similarity;
☉ E: similarity based on clinical data.
Those 5 categories of CC bioactivity descriptors were calculated and then subjected to manifold projection using UMAP algorithm, to project all NPs on a 2-Dimensional space. The current NP was highlighted with a small circle in the 2-D map. Below figures: left-to-right, A-to-E.

A: chemistry similarity

B: biological targets similarity

C: networks similarity

D: cell-based bioactivity similarity

E: similarity based on clinical data