Chembase list of 866358 unique molecular structures

ethyl 4-{13-chloro-5-cyano-4-azatricyclo[9.4.0.0³,⁸]pentad...

$$$$ Data

M. F.

C23H22ClN3O2

Suppliers	Catalog Number
TRC	C981800

Database	Data ID
PubChem	29976517

M. W.

407.89268

CAS

860010-31-7

Similarity

N/A

ID: 165102

ethyl 4-{13-chloro-7-cyano-4-azatricyclo[9.4.0.0³,⁸]pentad...

$$$$ Data

M. F.

C23H22ClN3O2

Suppliers	Catalog Number
TRC	C981805

Database	Data ID
PubChem	29976521

M. W.

407.89268

CAS

860010-33-9

Similarity

N/A

ID: 165103

1,5-dimethyl (2S)-2-[(4-{[(2,4-diamino-7-cyanopteridin-6-yl)methyl](methyl)amino...

$$$$ Data

M. F.

C23H25N9O5

Suppliers	Catalog Number
TRC	C981820

Database	Data ID
PubChem	13889753

M. W.

507.5019

CAS

112163-39-0

Similarity

N/A

ID: 165104

2-[1-hydroxy(3,3,4,4,5,5-²H₆)cyclohexyl]-2-(4-methoxypheny...

$$$$ Data

M. F.

C15H19NO2

Suppliers	Catalog Number
TRC	C981892

Database	Data ID
PubChem	45038742

M. W.

245.31686

CAS

1020719-31-6

Similarity

N/A

ID: 165105

3-(methylamino)-2,3,4,9-tetrahydro-1H-carbazole-6-carbonitrile

$$$$ Data

M. F.

C14H15N3

Suppliers	Catalog Number
TRC	C981900

Database	Data ID
PubChem	11085471

M. W.

225.289

CAS

147009-33-4

Similarity

N/A

ID: 165106

(3R)-3-(methylamino)-2,3,4,9-tetrahydro-1H-carbazole-6-carbonitrile

$$$$ Data

M. F.

C14H15N3

Suppliers	Catalog Number
TRC	C981901

Database	Data ID
PubChem	10959163

M. W.

225.289

CAS

247939-84-0

Similarity

N/A

ID: 165107

3-[(²H₃)methylamino]-2,3,4,9-tetrahydro-1H-carbazole-6-car...

$$$$ Data

M. F.

C14H15N3

Suppliers	Catalog Number
TRC	C981902

Database	Data ID
PubChem	71315045

M. W.

225.289

CAS

Similarity

N/A

ID: 165108

(3S)-3-(methylamino)-2,3,4,9-tetrahydro-1H-carbazole-6-carbonitrile

$$$$ Data

M. F.

C14H15N3

Suppliers	Catalog Number
TRC	C981905

Database	Data ID
PubChem	29941625

M. W.

225.289

CAS

1217755-82-2

Similarity

N/A

ID: 165109

tert-butyl 2-[(4S,6S)-6-(cyanomethyl)-2,2-dimethyl-1,3-dioxan-4-yl]acetate

$$$$ Data

M. F.

C14H23NO4

Suppliers	Catalog Number
TRC	C981910

Database	Data ID
PubChem	40423490

M. W.

269.33672

CAS

196085-85-5

Similarity

N/A

ID: 165110

tert-butyl 2-[(4S,6R)-6-(cyanomethyl)-2,2-dimethyl-1,3-dioxan-4-yl]acetate

$$$$ Data

M. F.

C14H23NO4

Suppliers	Catalog Number
TRC	C981911

Database	Data ID
PubChem	46781086

M. W.

269.33672

CAS

186508-95-2

Similarity

N/A

ID: 165111

2-[1-ethoxy(1,2-¹³C₂)ethylidene]propanedinitril...

$$$$ Data

M. F.

C7H8N2O

Suppliers	Catalog Number
TRC	C981917

Database	Data ID
PubChem	71315046

M. W.

138.13652968

CAS

Similarity

N/A

ID: 165112

2-(1H-indol-2-yl)acetonitrile

$$$$ Data

M. F.

C10H8N2

Suppliers	Catalog Number
TRC	C981920
A&J Pharmtech	AJA-O24570

Database	Data ID
PubChem	169731

M. W.

156.18392

CAS

7210-27-7

Similarity

N/A

ID: 165113

2-(4-cyclohexylnaphthalen-1-yl)acetonitrile

$$$$ Data

M. F.

C18H19N

Suppliers	Catalog Number
TRC	C981925

Database	Data ID
PubChem	23346483

M. W.

249.35016

CAS

71109-05-2

Similarity

N/A

ID: 165114

2-methyl-2H-indazole-3-carbonitrile

$$$$ Data

M. F.

C9H7N3

Suppliers	Catalog Number
TRC	C981930

Database	Data ID
PubChem	284698

M. W.

157.17198

CAS

31748-45-5

Similarity

N/A

ID: 165115

2-(4-cyclohexylnaphthalen-1-yl)(3,3,3-²H₃)propanenitrile

$$$$ Data

M. F.

C19H21N

Suppliers	Catalog Number
TRC	C981937

Database	Data ID
PubChem	71315047

M. W.

263.37674

CAS

1217072-99-5

Similarity

N/A

ID: 165116

2-methylpyridine-4-carbonitrile

$$$$ Data

M. F.

C7H6N2

Suppliers	Catalog Number
TRC	C981940

Database	Data ID
PubChem	11959073

M. W.

118.13594

CAS

2214-53-1

Similarity

N/A

ID: 165117

[(2R,3S,4S,5R,6S)-3,4,5-tris(acetyloxy)-6-[(cyanomethyl)sulfanyl]oxan-2-yl]methy...

$$$$ Data

M. F.

C16H21NO9S

Suppliers	Catalog Number
TRC	C981950

Database	Data ID
PubChem	18634526

M. W.

403.40424

CAS

61145-33-3

Similarity

N/A

ID: 165118

2-[(cyanomethyl)sulfanyl]acetic acid

$$$$ Data

M. F.

C4H5NO2S

Suppliers	Catalog Number
TRC	C981965
Enamine	EN300-33483

Database	Data ID
PubChem	12774323

M. W.

131.153

CAS

55817-29-3

Similarity

N/A

ID: 165119

3-oxo-1,3-dihydro-2-benzofuran-5-carbonitrile

$$$$ Data

M. F.

C9H5NO2

Suppliers	Catalog Number
TRC	C982080

Database	Data ID
PubChem	13289562

M. W.

159.1415

CAS

89877-62-3

Similarity

N/A

ID: 165120

(1S,2R,6S,14R,15R,16R)-16-(2-hydroxy-3,3-dimethylbutan-2-yl)-11,15-dimethoxy-13-...

$$$$ Data

M. F.

C27H36N2O4

Suppliers	Catalog Number
TRC	C982090

Database	Data ID
PubChem	23242430

M. W.

452.58574

CAS

16614-60-1

Similarity

N/A

ID: 165121

(1S,2R,6S,14R,15R,16R)-16-[2-hydroxy-3,3-bis(²H₃)methyl(4,...

$$$$ Data

M. F.

C27H36N2O4

Suppliers	Catalog Number
TRC	C982092

Database	Data ID
PubChem	71315048

M. W.

452.58574

CAS

Similarity

N/A

ID: 165122

2-(1-hydroxycyclohexyl)-2-(4-methoxyphenyl)acetonitrile

$$$$ Data

M. F.

C15H19NO2

Suppliers	Catalog Number
TRC	C982103
Bide Pharmatech	BD16043
A&J Pharmtech	AJA-O3556

Database	Data ID
PubChem	9899621

M. W.

245.31686

CAS

93413-76-4

Similarity

N/A

ID: 165123

7-methyl-2,3-dihydro-1H-indene-4-carbonitrile

$$$$ Data

M. F.

C11H11N

Suppliers	Catalog Number
TRC	C982105

Database	Data ID
PubChem	84783

M. W.

157.21174

CAS

15085-20-8

Similarity

N/A

ID: 165124

2-cyano-2-phenylbutanamide

$$$$ Data

M. F.

C11H12N2O

Suppliers	Catalog Number
TRC	C982106

Database	Data ID
PubChem	257232

M. W.

188.22578

CAS

80544-75-8

Similarity

N/A

ID: 165125

(²H₄)pyridine-3-carbonitrile

$$$$ Data

M. F.

C6H4N2

Suppliers	Catalog Number
TRC	C982108

Database	Data ID
PubChem	12218738

M. W.

104.10936

CAS

1020719-32-7

Similarity

N/A

ID: 165126

2,3-dioxo-1,2,3,4-tetrahydroquinoxaline-6-carbonitrile

$$$$ Data

M. F.

C9H5N3O2

Suppliers	Catalog Number
TRC	C982110

Database	Data ID
PubChem	5100691

M. W.

187.1549

CAS

61875-40-9

Similarity

N/A

ID: 165127

10H-phenothiazine-2-carbonitrile

$$$$ Data

M. F.

C13H8N2S

Suppliers	Catalog Number
TRC	C982115
Bide Pharmatech	BD20586
A&J Pharmtech	AJA-O4805

Database	Data ID
PubChem	98841

M. W.

224.28102

CAS

38642-74-9

Similarity

N/A

ID: 165128

1-(4-cyanophenyl)guanidine

$$$$ Data

M. F.

C8H8N4

Suppliers	Catalog Number
Alfa Aesar	H54761
TRC	C982120

Database	Data ID
PubChem	17747914

M. W.

160.17592

CAS

5637-42-3

Similarity

N/A

ID: 165129

ethyl 2-{[(4-cyanophenyl)amino]methyl}-1-(²H₃)methyl-1H-1,...

$$$$ Data

M. F.

C19H18N4O2

Suppliers	Catalog Number
TRC	C982132

Database	Data ID
PubChem	71315049

M. W.

334.37182

CAS

Similarity

N/A

ID: 165130

2-[3-(methoxymethoxy)piperidin-1-yl]benzonitrile

$$$$ Data

M. F.

C14H18N2O2

Suppliers	Catalog Number
TRC	C982140

Database	Data ID
PubChem	71315050

M. W.

246.30492

CAS

Similarity

N/A

ID: 165131

2-(3-hydroxypiperidin-1-yl)benzonitrile

$$$$ Data

M. F.

C12H14N2O

Suppliers	Catalog Number
TRC	C982150

Database	Data ID
PubChem	60677552

M. W.

202.25236

CAS

Similarity

N/A

ID: 165132

6-cyanopyridine-3-sulfonyl chloride

$$$$ Data

M. F.

C6H3ClN2O2S

Suppliers	Catalog Number
TRC	C982155
Enamine	EN300-64564
A&J Pharmtech	AJA-O37145

Database	Data ID
PubChem	47003190

M. W.

202.61822

CAS

928139-31-5

Similarity

N/A

ID: 165133

N-[4-cyano-3-(trifluoromethyl)phenyl]-2-oxopropanamide

$$$$ Data

M. F.

C11H7F3N2O2

Suppliers	Catalog Number
TRC	C982160

Database	Data ID
PubChem	9899821

M. W.

256.1806896

CAS

87310-69-8

Similarity

N/A

ID: 165134

2-(4-methyl-2-phenylpiperazin-1-yl)pyridine-3-carbonitrile

$$$$ Data

M. F.

C17H18N4

Suppliers	Catalog Number
TRC	C982165

Database	Data ID
PubChem	9864066

M. W.

278.35162

CAS

61337-88-0

Similarity

N/A

ID: 165135

[(2R,3R,4R,5R)-3,4-bis(acetyloxy)-5-(3-cyano-1H-1,2,4-triazol-1-yl)oxolan-2-yl]m...

$$$$ Data

M. F.

C14H16N4O7

Suppliers	Catalog Number
TRC	C982175

Database	Data ID
PubChem	13456801

M. W.

352.29944

CAS

40371-99-1

Similarity

N/A

ID: 165136

2-[2-amino-4,5-dihydro(2-¹⁴C)-1H-imidazol-1-yl]acetic acid

$$$$ Data

M. F.

C5H9N3O2

Suppliers	Catalog Number
TRC	C982220

Database	Data ID
PubChem	45038744

M. W.

145.13640199

CAS

210110-93-3

Similarity

N/A

ID: 165137

sodium 2-cyano(1,2-¹³C₂)acetate

$$$$ Data

M. F.

C3H2NNaO2

Suppliers	Catalog Number
TRC	C987492

Database	Data ID
PubChem	71315051

M. W.

109.02855968

CAS

Similarity

N/A

ID: 165138

3-(2-cyanoacetyl)-1-(2-methylpropyl)urea

$$$$ Data

M. F.

C8H13N3O2

Suppliers	Catalog Number
TRC	C987500

Database	Data ID
PubChem	4345692

M. W.

183.20772

CAS

59341-75-2

Similarity

N/A

ID: 165139

4-acetyl(²H₄)benzonitrile

$$$$ Data

M. F.

C9H7NO

Suppliers	Catalog Number
TRC	C987507

Database	Data ID
PubChem	71315053

M. W.

145.15798

CAS

Similarity

N/A

ID: 165140

6-hydroxy-2-oxo-1,2-dihydropyridine-3-carbonitrile sodium

$$$$ Data

M. F.

C6H4N2NaO2

Suppliers	Catalog Number
TRC	C987510

Database	Data ID
PubChem	71315054

M. W.

159.09793

CAS

91467-46-8

Similarity

N/A

ID: 165141

ethyl (2Z)-2-cyano-3-methylpent-2-enoate

$$$$ Data

M. F.

C9H13NO2

Suppliers	Catalog Number
TRC	C987530

Database	Data ID
PubChem	6309073

M. W.

167.20502

CAS

759-51-3

Similarity

N/A

ID: 165142

ethyl (2Z)-2-cyano-3-methyl(5,5,5-²H₃)pent-2-enoate

$$$$ Data

M. F.

C9H13NO2

Suppliers	Catalog Number
TRC	C987532

Database	Data ID
PubChem	71315055

M. W.

167.20502

CAS

Similarity

N/A

ID: 165143

piperidine-2-carbonitrile

$$$$ Data

M. F.

C6H10N2

Suppliers	Catalog Number
TRC	C987545
Bide Pharmatech	BD20791
A&J Pharmtech	AJA-O34639

Database	Data ID
PubChem	155138

M. W.

110.157

CAS

42457-10-3

Similarity

N/A

ID: 165144

piperidine-2-carbonitrile

$$$$ Data

M. F.

C6H10N2

Suppliers	Catalog Number
TRC	C987547

Database	Data ID
PubChem	71315056

M. W.

111.14965484

CAS

Similarity

N/A

ID: 165145

2-hydroxy-2-(²H₃)methyl(²H₃)propanen...

$$$$ Data

M. F.

C4H7NO

Suppliers	Catalog Number
TRC	C987577

Database	Data ID
PubChem	10486800

M. W.

85.10448

CAS

40662-43-9

Similarity

N/A

ID: 165146

3-bromo-1-(3-chloropyridin-2-yl)-N-[4-cyano-2-methyl-6-(methylcarbamoyl)phenyl]-...

$$$$ Data

M. F.

C19H14BrClN6O2

Suppliers	Catalog Number
TRC	C987580

Database	Data ID
PubChem	11578610

M. W.

473.71046

CAS

736994-63-1

Similarity

N/A

ID: 165147

4-chloro-2-cyano-N,N-bis(²H₃)methyl-5-(4-methylphenyl)-1H-...

$$$$ Data

M. F.

C13H13ClN4O2S

Suppliers	Catalog Number
TRC	C987602

Database	Data ID
PubChem	71315057

M. W.

324.78592

CAS

Similarity

N/A

ID: 165148

methyl 2-{[2-(2-{2-[bis(2-methoxy-2-oxoethyl)amino]-6-[(1E)-2-cyanoeth-1-en-1-yl...

$$$$ Data

M. F.

C30H35N3O10

Suppliers	Catalog Number
TRC	C987650

Database	Data ID
PubChem	71315058

M. W.

597.613

CAS

1076199-89-7

Similarity

N/A

ID: 165149

(3S,8aS)-3-(2-methylpropyl)-octahydropyrrolo[1,2-a]piperazine-1,4-dione

$$$$ Data

M. F.

C11H18N2O2

Suppliers	Catalog Number
TRC	C987660

Database	Data ID
PubChem	7074739

M. W.

210.27282

CAS

2873-36-1

Similarity

N/A

ID: 165150

N-(3-{3-cyanopyrazolo[1,5-a]pyrimidin-7-yl}phenyl)acetamide

$$$$ Data

M. F.

C15H11N5O

Suppliers	Catalog Number
TRC	C987670

Database	Data ID
PubChem	9993635

M. W.

277.28074

CAS

115931-01-6

Similarity

N/A

Part I: Carbon
- I.1: Carbon-Carbon Bonds
- I.1.1 Alkanes
- Primary carbon
- Secondary carbon
- Tertiary carbon
- Quaternary carbon
- I.1.2 C-C double and Triple Bonds
- Alkene
- Alkyne
- Allene
- I.2: One Carbon-Hetero Bond
- I.2.1 Alkyl Halogenides
- Alkylchloride
- Alkylfluoride
- Alkylbromide
- Alkyliodide
- I.2.2 Alcohols and Ethers
- Alcohol
- Primary alcohol
- Secondary alcohol
- Tertiary alcohol
- Dialkylether
- Dialkylthioether
- Alkylarylether
- Diarylether
- Alkylarylthioether
- Diarylthioether
- Oxonium
- I.2.3 Amines
- Amine
- Primary aliphatic amine
- Secondary aliphatic amine
- Tertiary aliphatic amine
- Quaternary aliphatic ammonium
- Primary aromatic amine
- Secondary aromatic amine
- Tertiary aromatic amine
- Quaternary aromatic ammonium
- Secondary mixed amine
- Tertiary mixed amine
- Quaternary mixed ammonium
- Ammonium
- I.2.4 Others
- Alkylthiol
- Dialkylthioether
- Alkylarylthioether
- Disulfide
- 1,2-Aminoalcohol
- 1,2-Diol
- 1,1-Diol
- Hydroperoxide
- Peroxo
- Organolithium compounds
- Organomagnesium compounds
- Organometallic compounds
- I.3: Two Carbon-Hetero Bonds (Carbonyl and Derivatives)
- I.3.1 Double Bond to Hetero
- Aldehyde
- Ketone
- Thioaldehyde
- Thioketone
- Imine
- Immonium
- Oxime
- Oximether
- I.3.2. Two Single Bonds to Hetero
- Acetal
- Hemiacetal
- Aminal
- Hemiaminal
- Thioacetal
- Thiohemiacetal
- Halogen acetal like
- Acetal like
- Halogenmethylen ester and similar
- NOS methylen ester and similar
- Hetero methylen ester and similar
- Cyanhydrine
- I.3.3 Single Bond to Hetero, C=C Double Bond (Enols and Similar)
- Chloroalkene
- Fluoroalkene
- Bromoalkene
- Iodoalkene
- Enol
- Endiol
- Enolether
- Enolester
- Enamine
- Thioenol
- Thioenolether
- I.4: Three Carbon-Hetero Bonds (Carboxyl and Derivatives)
- Acylchloride
- Acylfluoride
- Acylbromide
- Acyliodide
- Acylhalide
- Carboxylic acid
- Carboxylic ester
- Lactone
- Carboxylic anhydride
- Carboxylic acid derivative
- Carbothioic acid
- Carbothioic S ester
- Carbothioic S lactone
- Carbothioic O ester
- Carbothioic O lactone
- Carbothioic halide
- Carbodithioic acid
- Carbodithioic ester
- Carbodithiolactone
- Amide
- Primary amide
- Secondary amide
- Tertiary amide
- Lactam
- Alkyl imide
- N hetero imide
- Imide acidic
- Thioamide
- Thiolactam
- Oximester
- Amidine
- Hydroxamic acid
- Hydroxamic acid ester
- Imidoacid
- Imidoacid cyclic
- Imidoester
- Imidolactone
- Imidothioacid
- Imidothioacid cyclic
- Imidothioester
- Imidothiolactone
- Amidine
- Imidolactam
- Imidoylhalide
- Imidoylhalide cyclic
- Amidrazone
- Alpha aminoacid
- Alpha hydroxyacid
- Peptide middle
- Peptide C term
- Peptide N term
- Carboxylic orthoester
- Ketene
- Ketenacetal
- Nitrile
- Isonitrile
- Vinylogous carbonyl or carboxyl derivative
- Vinylogous acid
- Vinylogous ester
- Vinylogous amide
- Vinylogous halide
- I.5: Four Carbon-Hetero Bonds (Carbonic Acid and Derivatives)
- Carbonic acid dieester
- Carbonic acid esterhalide
- Carbonic acid monoester
- Carbonic acid derivatives
- Thiocarbonic acid dieester
- Thiocarbonic acid esterhalide
- Thiocarbonic acid monoester
- Urea
- Thiourea
- Isourea
- Isothiourea
- Guanidine
- Carbaminic acid
- Urethan(Carbamate ester)
- Biuret
- Semicarbazide
- Carbazide
- Semicarbazone
- Carbazone
- Thiosemicarbazide
- Thiocarbazide
- Thiosemicarbazone
- Thiocarbazone
- Isocyanate
- Cyanate
- Isothiocyanate
- Thiocyanate
- Carbodiimide
- Orthocarbonic derivatives
- I.6 Aromatics
- Phenol
- 1,2-Diphenol
- Arylchloride
- Arylfluoride
- Arylbromide
- Aryliodide
- Arylthiol
- Iminoarene
- Oxoarene
- Thioarene
- Hetero N basic H
- Hetero N basic no H
- Hetero N nonbasic
- Hetero O
- Hetero S
- Heteroaromatic
Part II: N, S, P, Si, B
- II.1 Nitrogen
- Nitrite
- Thionitrite
- Nitrate
- Nitro
- Nitroso
- Azide
- Acylazide
- Diazo
- Diazonium
- Nitrosamine
- Nitrosamide
- N-Oxide
- Hydrazine
- Hydrazone
- Hydroxylamine
- II.2 Sulfur
- Sulfon
- Sulfoxide
- Sulfonium
- Sulfuric acid
- Sulfuric monoester
- Sulfuric diester
- Sulfuric monoamide
- Sulfuric diamide
- Sulfuric esteramide
- Sulfuric derivative
- Sulfonic acid
- Sulfonamide
- Sulfonic ester
- Sulfonic halide
- Sulfonic derivative
- Sulfinic acid
- Sulfinic amide
- Sulfinic ester
- Sulfinic halide
- Sulfinic derivative
- Sulfenic acid
- Sulfenic amide
- Sulfenic ester
- Sulfenic halide
- Sulfenic derivative
- II.3 Phosphorous
- Phosphine
- Phosphine oxide
- Phosphonium
- Phosphorylen
- Phosphonic acid
- Phosphonic monoester
- Phosphonic diester
- Phosphonic monoamide
- Phosphonic diamide
- Phosphonic esteramide
- Phosphonic acid derivative
- Phosphoric acid
- Phosphoric monoester
- Phosphoric diester
- Phosphoric triester
- Phosphoric monoamide
- Phosphoric diamide
- Phosphoric triamide
- Phosphoric monoestermonoamide
- Phosphoric diestermonoamide
- Phosphoric monoesterdiamide
- Phosphoric acid derivative
- Phosphinic acid
- Phosphinic ester
- Phosphinic amide
- Phosphinic acid derivative
- Phosphonous acid
- Phosphonous monoester
- Phosphonous diester
- Phosphonous monoamide
- Phosphonous diamide
- Phosphonous esteramide
- Phosphonous derivatives
- Phosphinous acid
- Phosphinous ester
- Phosphinous amide
- Phosphinous derivatives
- II.4 Silicon
- Quart silane
- Non-quart silane
- Silylmonohalide
- Het trialkylsilane
- Dihet dialkylsilane
- Trihet alkylsilane
- Silicic acid derivative
- II.5 Boron
- Trialkylborane
- Boric acid derivatives
- Boronic acid derivative
- Borohydride
- Quaternary boron
Part III: Some Special Patterns
- III.1 Chains
- III.2 Rings
- Aromatic
- Heterocyclic
- Epoxide
- NH aziridine
- Spiro
- Annelated rings
- Bridged rings
- III.3 Sugars and Nucleosides/Nucleotides, Steroids
- Sugar pattern 1
- Sugar pattern 2
- Sugar pattern combi
- Sugar pattern 2 reducing
- Sugar pattern 2 alpha
- Sugar pattern 2 beta
- III.4 Everything else...
- Conjugated double bond
- Conjugated tripple bond
- Cis double bond
- Trans double bond
- Mixed anhydrides
- Halogen on hetero
- Halogen multi subst
- Trifluoromethyl
- C ONS bond
- Charged
- Anion
- Kation
- Salt
- 1,3-Tautomerizable
- 1,5-Tautomerizable
- Rotatable bond
- Michael acceptor
- Dicarbodiazene
- CH-acidic
- CH-acidic strong
- Chiral center specified