Chembase list of 866358 unique molecular structures

4-[3,3-dimethyl-2-(3-oxobutyl)cyclobutyl]pent-4-enenitrile

$$$$ Data

M. F.

C15H23NO

Suppliers	Catalog Number
Apollo Scientific	OR22810

Database	Data ID
PubChem	2775996

M. W.

233.34922

CAS

Similarity

N/A

ID: 80302

6-oxo-3-(prop-1-en-2-yl)heptanenitrile

$$$$ Data

M. F.

C10H15NO

Suppliers	Catalog Number
Apollo Scientific	OR22811

Database	Data ID
PubChem	2724743

M. W.

165.2322

CAS

Similarity

N/A

ID: 80303

[2-(acetyloxy)-3-[(acetyloxy)methyl]-5-methylphenyl]methyl acetate

$$$$ Data

M. F.

C15H18O6

Suppliers	Catalog Number
Apollo Scientific	OR22812

Database	Data ID
PubChem	2775997

M. W.

294.29982

CAS

Similarity

N/A

ID: 80304

6-bromo-4-(dibromomethyl)-5,5-dimethylbicyclo[2.1.1]hexane-1-carboxamide

$$$$ Data

M. F.

C10H14Br3NO

Suppliers	Catalog Number
Apollo Scientific	OR22813

Database	Data ID
PubChem	2775998

M. W.

403.93626

CAS

Similarity

N/A

ID: 80305

6-bromo-4-(dibromomethyl)-5,5-dimethyl-N-(1,3-thiazol-2-yl)bicyclo[2.1.1]hexane-...

$$$$ Data

M. F.

C13H15Br3N2OS

Suppliers	Catalog Number
Apollo Scientific	OR22814

Database	Data ID
PubChem	2775999

M. W.

487.048

CAS

Similarity

N/A

ID: 80306

(1H-1,3-benzodiazol-1-ylmethyl)diethylamine

$$$$ Data

M. F.

C12H17N3

Suppliers	Catalog Number
Apollo Scientific	OR22815

Database	Data ID
PubChem	2776000

M. W.

203.28348

CAS

Similarity

N/A

ID: 80307

(1-methyl-1H-1,3-benzodiazol-2-yl)(phenyl)phosphinic acid

$$$$ Data

M. F.

C14H13N2O2P

Suppliers	Catalog Number
Apollo Scientific	OR22816

Database	Data ID
PubChem	736450

M. W.

272.238981

CAS

Similarity

N/A

ID: 80308

8-bromonaphthalene-1-carbonyl 8-bromonaphthalene-1-carboxylate

$$$$ Data

M. F.

C22H12Br2O3

Suppliers	Catalog Number
Apollo Scientific	OR22817

Database	Data ID
PubChem	2776001

M. W.

484.13688

CAS

Similarity

N/A

ID: 80309

3-methylbenzoyl 3-methylbenzoate

$$$$ Data

M. F.

C16H14O3

Suppliers	Catalog Number
MP Biomedicals	05221531
Alfa Aesar	H32739
Apollo Scientific	OR22818

Database	Data ID
PubChem	253301

M. W.

254.28056

CAS

21436-44-2

Similarity

N/A

ID: 80310

N-(2,2,2-trichloro-1-{[2-(ethylsulfanyl)pyrimidin-4-yl]oxy}ethyl)benzamide

$$$$ Data

M. F.

C15H14Cl3N3O2S

Suppliers	Catalog Number
Apollo Scientific	OR22819

Database	Data ID
PubChem	2776002

M. W.

406.71456

CAS

Similarity

N/A

ID: 80311

N-(2,2,2-trichloro-1-phenylethyl)benzamide

$$$$ Data

M. F.

C15H12Cl3NO

Suppliers	Catalog Number
Apollo Scientific	OR22820

Database	Data ID
PubChem	285785

M. W.

328.62088

CAS

Similarity

N/A

ID: 80312

3,3,4-trimethylpentane-1,4-diol

$$$$ Data

M. F.

C8H18O2

Suppliers	Catalog Number
Apollo Scientific	OR22821

Database	Data ID
PubChem	736454

M. W.

146.22732

CAS

Similarity

N/A

ID: 80313

N-[2,2,2-trichloro-1-(4-methyl-6-oxo-1,6-dihydropyrimidin-1-yl)ethyl]benzamide

$$$$ Data

M. F.

C14H12Cl3N3O2

Suppliers	Catalog Number
Apollo Scientific	OR22822

Database	Data ID
PubChem	2776004

M. W.

360.62298

CAS

Similarity

N/A

ID: 80314

3-(2-bromoethyl)adamantane-1-carboxylic acid

$$$$ Data

M. F.

C13H19BrO2

Suppliers	Catalog Number
Apollo Scientific	OR22823

Database	Data ID
PubChem	2776006

M. W.

287.19276

CAS

Similarity

N/A

ID: 80315

N-{2,2,2-trichloro-1-[(pyrimidin-2-yl)amino]ethyl}benzamide

$$$$ Data

M. F.

C13H11Cl3N4O

Suppliers	Catalog Number
Apollo Scientific	OR22824

Database	Data ID
PubChem	2776007

M. W.

345.61164

CAS

Similarity

N/A

ID: 80316

bicyclo[2.2.1]heptane-1-carboxylic acid

$$$$ Data

M. F.

C8H12O2

Suppliers	Catalog Number
Apollo Scientific	OR22825

Database	Data ID
PubChem	140414

M. W.

140.17968

CAS

Similarity

N/A

ID: 80317

3-(bromomethyl)-5-methyladamantane-1-carboxylic acid

$$$$ Data

M. F.

C13H19BrO2

Suppliers	Catalog Number
Apollo Scientific	OR22826

Database	Data ID
PubChem	2776008

M. W.

287.19276

CAS

Similarity

N/A

ID: 80318

3-(adamantan-1-yl)-2-bromopropanoic acid

$$$$ Data

M. F.

C13H19BrO2

Suppliers	Catalog Number
Apollo Scientific	OR22827

Database	Data ID
PubChem	2776009

M. W.

287.19276

CAS

Similarity

N/A

ID: 80319

5-(bromomethyl)bicyclo[3.3.1]nonane-1-carboxylic acid

$$$$ Data

M. F.

C11H17BrO2

Suppliers	Catalog Number
Apollo Scientific	OR22828

Database	Data ID
PubChem	736461

M. W.

261.15548

CAS

Similarity

N/A

ID: 80320

bicyclo[2.2.1]heptane-1-carboxamide

$$$$ Data

M. F.

C8H13NO

Suppliers	Catalog Number
Apollo Scientific	OR22829

Database	Data ID
PubChem	736462

M. W.

139.19492

CAS

Similarity

N/A

ID: 80321

tert-butyl N-(5-formylpyrazin-2-yl)carbamate

$$$$ Data

M. F.

C10H13N3O3

Suppliers	Catalog Number
Apollo Scientific	OR2283
A&J Pharmtech	AJA-O21146

Database	Data ID
PubChem	44118835

M. W.

223.22852

CAS

Similarity

N/A

ID: 80322

2-(2-methyl-5-nitro-1H-imidazol-1-yl)ethyl N-[2,2,2-trichloro-1-(dibenzylamino)e...

$$$$ Data

M. F.

C23H24Cl3N5O4

Suppliers	Catalog Number
Apollo Scientific	OR22830

Database	Data ID
PubChem	2776010

M. W.

540.82676

CAS

Similarity

N/A

ID: 80323

2-(4-oxo-4,5-dihydro-1,3-thiazol-2-yl)-2-(triphenyl-$l^{5}-phosphanylidene)aceto...

$$$$ Data

M. F.

C23H17N2OPS

Suppliers	Catalog Number
Apollo Scientific	OR22831

Database	Data ID
PubChem	2776011

M. W.

400.432641

CAS

Similarity

N/A

ID: 80324

2-(2-methyl-5-nitro-1H-imidazol-1-yl)ethyl N-{2,2,2-trichloro-1-[(pyridin-2-yl)a...

$$$$ Data

M. F.

C14H15Cl3N6O4

Suppliers	Catalog Number
Apollo Scientific	OR22832

Database	Data ID
PubChem	2776012

M. W.

437.6657

CAS

Similarity

N/A

ID: 80325

1,2,4,5-tetrachloro-3-nitrobenzene

$$$$ Data

M. F.

C6HCl4NO2

Suppliers	Catalog Number
Sigma Aldrich	T7802 40384 45672 (more...)
MP Biomedicals	05218654
Apollo Scientific	OR22833

Database	Data ID
PubChem	8330

M. W.

260.88964

CAS

117-18-0

Similarity

N/A

ID: 80326

bicyclo[3.3.1]nonan-1-ol

$$$$ Data

M. F.

C9H16O

Suppliers	Catalog Number
Apollo Scientific	OR22834

Database	Data ID
PubChem	566190

M. W.

140.22274

CAS

Similarity

N/A

ID: 80327

pentachloropyridine

$$$$ Data More

M. F.

C5Cl5N

Suppliers	Catalog Number
Sigma Aldrich	138002
Alfa Aesar	A13842
Apollo Scientific	OR22835

Database	Data ID
PubChem	16584

M. W.

251.3252

CAS

2176-62-7

Similarity

N/A

ID: 80328

2,6-dichloro-3-(trichloromethyl)pyridine

$$$$ Data

M. F.

C6H2Cl5N

Suppliers	Catalog Number
Apollo Scientific	OR22836

Database	Data ID
PubChem	108701

M. W.

265.35178

CAS

Similarity

N/A

ID: 80329

hexachloro-1-benzothiophene

$$$$ Data

M. F.

C8Cl6S

Suppliers	Catalog Number
Apollo Scientific	OR22837

Database	Data ID
PubChem	2776013

M. W.

340.8686

CAS

Similarity

N/A

ID: 80330

pentachloropyridin-1-ium-1-olate

$$$$ Data

M. F.

C5Cl5NO

Suppliers	Catalog Number
Apollo Scientific	OR22838

Database	Data ID
PubChem	140250

M. W.

267.3246

CAS

Similarity

N/A

ID: 80331

5-chloro-2-(1H-1,2,3,4-tetrazol-1-yl)benzoic acid

$$$$ Data

M. F.

C8H5ClN4O2

Suppliers	Catalog Number
Apollo Scientific	OR2284
Enamine	EN300-35197
A&J Pharmtech	AJA-O24162

Database	Data ID
PubChem	11715561

M. W.

224.6039

CAS

449758-26-3

Similarity

N/A

ID: 80332

2,3,4,5-tetrachlorophenol

$$$$ Data

M. F.

C6H2Cl4O

Suppliers	Catalog Number
Sigma Aldrich	48153
Apollo Scientific	OR22841

Database	Data ID
PubChem	21013

M. W.

231.89148

CAS

4901-51-3

Similarity

N/A

ID: 80333

2,3,4,5-tetrachloroaniline

$$$$ Data

M. F.

C6H3Cl4N

Suppliers	Catalog Number
Sigma Aldrich	33657
Apollo Scientific	OR22842

Database	Data ID
PubChem	12466

M. W.

230.90672

CAS

634-83-3

Similarity

N/A

ID: 80334

tetrachloropyridin-2-amine

$$$$ Data

M. F.

C5H2Cl4N2

Suppliers	Catalog Number
Apollo Scientific	OR22843

Database	Data ID
PubChem	186651

M. W.

231.89478

CAS

Similarity

N/A

ID: 80335

pentabromopyridine

$$$$ Data

M. F.

C5Br5N

Suppliers	Catalog Number
Apollo Scientific	OR22844

Database	Data ID
PubChem	1627808

M. W.

473.5802

CAS

Similarity

N/A

ID: 80336

hexachlorobenzene

$$$$ Data

M. F.

C6Cl6

Suppliers	Catalog Number
Sigma Aldrich	171050 45522 52100 (more...)
Apollo Scientific	OR22845

Database	Data ID
Wikipedia	Hexachlorobenzene
PubChem	8370

M. W.

284.7822

CAS

118-74-1

Similarity

N/A

ID: 80337

1,2,3,4,5-pentachloro-6-nitrobenzene

$$$$ Data More

M. F.

C6Cl5NO2

Suppliers	Catalog Number
Sigma Aldrich	P3395 P8556 P2205 (more...)
MP Biomedicals	05220907
Apollo Scientific	OR22846

Database	Data ID
Wikipedia	Pentachloronitrobenzene
PubChem	6720

M. W.

295.3347

CAS

82-68-8

Similarity

N/A

ID: 80338

2,3,5,6-tetrachloro-4-iodopyridine

$$$$ Data

M. F.

C5Cl4IN

Suppliers	Catalog Number
Apollo Scientific	OR22847

Database	Data ID
PubChem	2776018

M. W.

342.77667

CAS

30332-35-5

Similarity

N/A

ID: 80339

1,2,3,4,6,7-hexabromonaphthalene

$$$$ Data

M. F.

C10H2Br6

Suppliers	Catalog Number
Apollo Scientific	OR22848

Database	Data ID
PubChem	53288

M. W.

601.54688

CAS

Similarity

N/A

ID: 80340

hexabromobenzene

$$$$ Data More

M. F.

C6Br6

Suppliers	Catalog Number
Sigma Aldrich	107131 45524 442605
MP Biomedicals	05201570
Alfa Aesar	B23295

Database	Data ID
PubChem	6905

M. W.

551.4882

CAS

87-82-1

Similarity

N/A

ID: 80341

5-bromo-2-[4-(methylsulfanyl)phenoxy]benzaldehyde

$$$$ Data

M. F.

C14H11BrO2S

Suppliers	Catalog Number
Apollo Scientific	OR2285

Database	Data ID
PubChem	23378710

M. W.

323.20494

CAS

Similarity

N/A

ID: 80342

1,2,3,4,5-pentabromo-6-chlorobenzene

$$$$ Data

M. F.

C6Br5Cl

Suppliers	Catalog Number
Apollo Scientific	OR22850

Database	Data ID
PubChem	2776021

M. W.

507.0372

CAS

Similarity

N/A

ID: 80343

1,2,3-tribromo-5-(3,4,5-tribromophenyl)benzene

$$$$ Data

M. F.

C12H4Br6

Suppliers	Catalog Number
Apollo Scientific	OR22851

Database	Data ID
PubChem	104942

M. W.

627.58416

CAS

Similarity

N/A

ID: 80344

1-[(2,5-dimethoxy-4-{1,3,5,7-tetraazatricyclo[3.3.1.1^{3,7}]decan-1-ium-1-ylmeth...

$$$$ Data

M. F.

C22H36Cl2N8O2

Suppliers	Catalog Number
Apollo Scientific	OR22852

Database	Data ID
PubChem	2776022

M. W.

515.47964

CAS

Similarity

N/A

ID: 80345

6-bromo-4-(dibromomethyl)-5,5-dimethyl-N-(pyridin-2-yl)bicyclo[2.1.1]hexane-1-ca...

$$$$ Data

M. F.

C15H17Br3N2O

Suppliers	Catalog Number
Apollo Scientific	OR22853

Database	Data ID
PubChem	2776024

M. W.

481.02028

CAS

Similarity

N/A

ID: 80346

bis(bromomethyl)pyrazine-2,3-dicarbonitrile

$$$$ Data

M. F.

C8H4Br2N4

Suppliers	Catalog Number
Apollo Scientific	OR22854
Enamine	EN300-77567

Database	Data ID
PubChem	2776025

M. W.

315.95216

CAS

Similarity

N/A

ID: 80347

2-[2-(phenylsulfanyl)phenyl]acetic acid

$$$$ Data

M. F.

C14H12O2S

Suppliers	Catalog Number
Maybridge	BTB15078
Apollo Scientific	OR22855

Database	Data ID
PubChem	15211

M. W.

244.30888

CAS

1527-17-9

Similarity

N/A

ID: 80348

methyl 2-{[2-(methoxycarbonyl)phenyl]disulfanyl}benzoate

$$$$ Data

M. F.

C16H14O4S2

Suppliers	Catalog Number
Apollo Scientific	OR22856

Database	Data ID
PubChem	79574

M. W.

334.40996

CAS

Similarity

N/A

ID: 80349

1-nitro-2-(phenyldisulfanyl)benzene

$$$$ Data

M. F.

C12H9NO2S2

Suppliers	Catalog Number
Apollo Scientific	OR22857

Database	Data ID
PubChem	2776027

M. W.

263.33536

CAS

Similarity

N/A

ID: 80350

N,N-dibenzyl-2,5,7-trinitro-9-oxo-9H-fluorene-4-carboxamide

$$$$ Data

M. F.

C28H18N4O8

Suppliers	Catalog Number
Apollo Scientific	OR22858

Database	Data ID
PubChem	2776029

M. W.

538.46452

CAS

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