Chembase list of 866358 unique molecular structures

4-[2-(4-hydroxy-3,5-dimethylphenyl)pentan-2-yl]-2,6-dimethylphenol

$$$$ Data

M. F.

C21H28O2

Suppliers	Catalog Number
Apollo Scientific	OR30356

Database	Data ID
PubChem	2801681

M. W.

312.44582

CAS

Similarity

N/A

ID: 87102

4,6-dimethyl-2-oxo-1,2-dihydropyridine-3-carbonitrile

$$$$ Data

M. F.

C8H8N2O

Suppliers	Catalog Number
Apollo Scientific	OR30357
Enamine	EN300-14166

Database	Data ID
PubChem	69856

M. W.

148.16192

CAS

769-28-8

Similarity

N/A

ID: 87103

piperazine-2,5-dione

$$$$ Data More

M. F.

C4H6N2O2

Suppliers	Catalog Number
Sigma Aldrich	G7251 G6406 50080
MP Biomedicals	05206035 02101824
Alfa Aesar	A18822

Database	Data ID
PubChem	7817

M. W.

114.10264

CAS

106-57-0

Similarity

N/A

ID: 87104

1-[(4-chlorophenyl)sulfanyl]propan-2-one

$$$$ Data

M. F.

C9H9ClOS

Suppliers	Catalog Number
Sigma Aldrich	653594
Apollo Scientific	OR3036

Database	Data ID
PubChem	321746

M. W.

200.68516

CAS

25784-83-2

Similarity

N/A

ID: 87105

4-[1-(4-hydroxy-3-methylphenyl)cyclohexyl]-2-methylphenol

$$$$ Data

M. F.

C20H24O2

Suppliers	Catalog Number
Apollo Scientific	OR30360

Database	Data ID
PubChem	75386

M. W.

296.40336

CAS

Similarity

N/A

ID: 87106

cyclopropyl(2,5-dimethylphenyl)methanol

$$$$ Data

M. F.

C12H16O

Suppliers	Catalog Number
Apollo Scientific	OR30361

Database	Data ID
PubChem	98997

M. W.

176.25484

CAS

Similarity

N/A

ID: 87107

1-(4-hydroxyphenyl)dodecan-1-one

$$$$ Data

M. F.

C18H28O2

Suppliers	Catalog Number
Apollo Scientific	OR30362
Enamine	EN300-114546

Database	Data ID
PubChem	585917

M. W.

276.41372

CAS

Similarity

N/A

ID: 87108

3-(prop-2-en-1-yl)-2,3-dihydro-1,3-benzothiazol-2-one

$$$$ Data

M. F.

C10H9NOS

Suppliers	Catalog Number
Apollo Scientific	OR30363

Database	Data ID
PubChem	2801692

M. W.

191.24956

CAS

Similarity

N/A

ID: 87109

1-(2,3,4-trihydroxyphenyl)hexan-1-one

$$$$ Data

M. F.

C12H16O4

Suppliers	Catalog Number
Apollo Scientific	OR30366

Database	Data ID
PubChem	2801698

M. W.

224.25304

CAS

43043-26-1

Similarity

N/A

ID: 87110

2-chloro-N-[chloro(2-chlorophenyl)methylidene]benzene-1-carbohydrazonoyl chlorid...

$$$$ Data

M. F.

C14H8Cl4N2

Suppliers	Catalog Number
Apollo Scientific	OR30367

Database	Data ID
PubChem	9577122

M. W.

346.03872

CAS

Similarity

N/A

ID: 87111

1-[3-(benzyloxy)phenyl]ethan-1-one

$$$$ Data More

M. F.

C15H14O2

Suppliers	Catalog Number
Alfa Aesar	B25084
Apollo Scientific	OR30368
TRC	B285845

Database	Data ID
PubChem	98689

M. W.

226.27046

CAS

34068-01-4

Similarity

N/A

ID: 87112

1-methyl-5-nitro-1H-pyrazole-4-carboxylic acid

$$$$ Data

M. F.

C5H5N3O4

Suppliers	Catalog Number
Apollo Scientific	OR3037

Database	Data ID
PubChem	270609

M. W.

171.1109

CAS

Similarity

N/A

ID: 87113

ethyl 2-cyano-2-phenylacetate

$$$$ Data More

M. F.

C11H11NO2

Suppliers	Catalog Number
Sigma Aldrich	E45201
MP Biomedicals	05212172
Alfa Aesar	L03929

Database	Data ID
PubChem	95298

M. W.

189.21054

CAS

4553-07-5

Similarity

N/A

ID: 87114

3-chloroadamantan-1-ol

$$$$ Data

M. F.

C10H15ClO

Suppliers	Catalog Number
Apollo Scientific	OR30371

Database	Data ID
PubChem	2801705

M. W.

186.6785

CAS

Similarity

N/A

ID: 87115

3-(prop-2-en-1-yloxy)-1$l^{6}-thiolane-1,1-dione

$$$$ Data

M. F.

C7H12O3S

Suppliers	Catalog Number
Apollo Scientific	OR30372

Database	Data ID
PubChem	2801708

M. W.

176.23338

CAS

Similarity

N/A

ID: 87116

N-cyclobutylidenehydroxylamine

$$$$ Data

M. F.

C4H7NO

Suppliers	Catalog Number
Apollo Scientific	OR30375
Enamine	EN300-79824

Database	Data ID
PubChem	546078

M. W.

85.10448

CAS

Similarity

N/A

ID: 87117

N-cyclopentylidenehydroxylamine

$$$$ Data More

M. F.

C5H9NO

Suppliers	Catalog Number
Sigma Aldrich	C112437
MP Biomedicals	05213918
Alfa Aesar	B24961

Database	Data ID
PubChem	14500

M. W.

99.13106

CAS

1192-28-5

Similarity

N/A

ID: 87118

decahydronaphthalen-2-one

$$$$ Data

M. F.

C10H16O

Suppliers	Catalog Number
Sigma Aldrich	110272
MP Biomedicals	05224229
Apollo Scientific	OR30379

Database	Data ID
PubChem	100328

M. W.

152.23344

CAS

4832-17-1

Similarity

N/A

ID: 87119

2,3-dibromo-3-(4-methylphenyl)propanoic acid

$$$$ Data

M. F.

C10H10Br2O2

Suppliers	Catalog Number
Apollo Scientific	OR30380

Database	Data ID
PubChem	2801720

M. W.

321.9932

CAS

Similarity

N/A

ID: 87120

1,3-diethyl 2-[2-(pyridin-4-yl)ethyl]propanedioate

$$$$ Data

M. F.

C14H19NO4

Suppliers	Catalog Number
Apollo Scientific	OR30381

Database	Data ID
PubChem	2801722

M. W.

265.30496

CAS

Similarity

N/A

ID: 87121

1,3-diethyl 2-(propan-2-ylidene)propanedioate

$$$$ Data More

M. F.

C10H16O4

Suppliers	Catalog Number
Sigma Aldrich	278033 59536
Alfa Aesar	L11195
Apollo Scientific	OR30382

Database	Data ID
PubChem	81255

M. W.

200.23164

CAS

6802-75-1

Similarity

N/A

ID: 87122

1,3-diethyl 2-[(2-nitrophenyl)methyl]propanedioate

$$$$ Data

M. F.

C14H17NO6

Suppliers	Catalog Number
Apollo Scientific	OR30383

Database	Data ID
PubChem	309274

M. W.

295.28788

CAS

Similarity

N/A

ID: 87123

2-(2-methyl-1,3-dioxolan-2-yl)ethane-1,1-diol

$$$$ Data

M. F.

C6H12O4

Suppliers	Catalog Number
Apollo Scientific	OR30385

Database	Data ID
PubChem	2801728

M. W.

148.15708

CAS

Similarity

N/A

ID: 87124

1,3-dimethyl 2-hydroxycyclohexane-1,3-dicarboxylate

$$$$ Data

M. F.

C10H16O5

Suppliers	Catalog Number
Apollo Scientific	OR30386

Database	Data ID
PubChem	236596

M. W.

216.23104

CAS

Similarity

N/A

ID: 87125

4,4-dimethylpiperidine-2,6-dione

$$$$ Data More

M. F.

C7H11NO2

Suppliers	Catalog Number
Sigma Aldrich	D160008
MP Biomedicals	05209551
Alfa Aesar	B22196

Database	Data ID
PubChem	14292

M. W.

141.16774

CAS

1123-40-6

Similarity

N/A

ID: 87126

N-(1,3-dioxolan-4-ylidene)hydroxylamine

$$$$ Data

M. F.

C3H5NO3

Suppliers	Catalog Number
Apollo Scientific	OR30388

Database	Data ID
PubChem	5853299

M. W.

103.0767

CAS

Similarity

N/A

ID: 87127

2-acetamido-3-(4-hydroxy-3,5-diiodophenyl)propanoic acid

$$$$ Data

M. F.

C11H11I2NO4

Suppliers	Catalog Number
Apollo Scientific	OR30389

Database	Data ID
PubChem	70565

M. W.

475.01828

CAS

Similarity

N/A

ID: 87128

ethyl 1,3-dithiolane-2-carboxylate

$$$$ Data

M. F.

C6H10O2S2

Suppliers	Catalog Number
Sigma Aldrich	43798
Apollo Scientific	OR30390

Database	Data ID
PubChem	88551

M. W.

178.2724

CAS

20461-99-8

Similarity

N/A

ID: 87129

3-methyl-1,5-bis(4-methylphenyl)pentaaza-1,4-diene

$$$$ Data

M. F.

C15H17N5

Suppliers	Catalog Number
Sigma Aldrich	445681
Apollo Scientific	OR30391

Database	Data ID
PubChem	267191

M. W.

267.32898

CAS

41798-81-6

Similarity

N/A

ID: 87130

2-(naphthalen-2-yl)naphthalene

$$$$ Data

M. F.

C20H14

Suppliers	Catalog Number
MP Biomedicals	05202287
Apollo Scientific	OR30392

Database	Data ID
PubChem	69166

M. W.

254.32516

CAS

612-78-2

Similarity

N/A

ID: 87131

ethyl 4-(dimethylamino)butanoate

$$$$ Data

M. F.

C8H17NO2

Suppliers	Catalog Number
Apollo Scientific	OR30393

Database	Data ID
PubChem	30904

M. W.

159.22608

CAS

Similarity

N/A

ID: 87132

2-(2-nitroethenyl)thiophene

$$$$ Data

M. F.

C6H5NO2S

Suppliers	Catalog Number
Apollo Scientific	OR30394
Life Chemicals	F2147-0416
Bide Pharmatech	BD61467 BD3424

Database	Data ID
PubChem	687329

M. W.

155.1744

CAS

874-84-0

Similarity

N/A

ID: 87133

2-methyl-1-nitronaphthalene

$$$$ Data More

M. F.

C11H9NO2

Suppliers	Catalog Number
Sigma Aldrich	M61607
MP Biomedicals	05201450
Apollo Scientific	OR30395

Database	Data ID
PubChem	13432

M. W.

187.19466

CAS

881-03-8

Similarity

N/A

ID: 87134

2-butylthiophene

$$$$ Data

M. F.

C8H12S

Suppliers	Catalog Number
MP Biomedicals	05201994
Alfa Aesar	A12740
Apollo Scientific	OR30396

Database	Data ID
PubChem	73818

M. W.

140.24588

CAS

1455-20-5

Similarity

N/A

ID: 87135

5-methyl-2-(trichloromethyl)-1,3-oxazolidin-4-one

$$$$ Data

M. F.

C5H6Cl3NO2

Suppliers	Catalog Number
Apollo Scientific	OR30397

Database	Data ID
PubChem	305262

M. W.

218.46564

CAS

Similarity

N/A

ID: 87136

ethyl 2-(2-formamido-1,3-thiazol-4-yl)-2-(N-hydroxyimino)acetate

$$$$ Data

M. F.

C8H9N3O4S

Suppliers	Catalog Number
Apollo Scientific	OR30398

Database	Data ID
PubChem	6409888

M. W.

243.23976

CAS

Similarity

N/A

ID: 87137

5-ethyl-2-methylpiperidine

$$$$ Data

M. F.

C8H17N

Suppliers	Catalog Number
MP Biomedicals	05203842
Maybridge	XBX00253
Apollo Scientific	OR30399

Database	Data ID
PubChem	7727

M. W.

127.22728

CAS

104-89-2

Similarity

N/A

ID: 87138

1,2,4-trihydroxy-9,10-dihydroanthracene-9,10-dione

$$$$ Data More

M. F.

C14H8O5

Suppliers	Catalog Number
Sigma Aldrich	82631 229148
MP Biomedicals	02156433
Apollo Scientific	OR3040

Database	Data ID
Wikipedia	1,2,4-Trihydroxyanthraquinone
PubChem	6683

M. W.

256.21032

CAS

81-54-9

Similarity

N/A

ID: 87139

1,3-bis(2,2,2-trichloro-1-hydroxyethyl)urea

$$$$ Data

M. F.

C5H6Cl6N2O3

Suppliers	Catalog Number
Sigma Aldrich	45812
Apollo Scientific	OR30401

Database	Data ID
PubChem	8313

M. W.

354.83074

CAS

116-52-9

Similarity

N/A

ID: 87140

4,4,4-trichloro-3-hydroxybutanoic acid

$$$$ Data

M. F.

C4H5Cl3O3

Suppliers	Catalog Number
Apollo Scientific	OR30402

Database	Data ID
PubChem	230088

M. W.

207.4397

CAS

Similarity

N/A

ID: 87141

1,1,1-trichloropentan-2-yl acetate

$$$$ Data

M. F.

C7H11Cl3O2

Suppliers	Catalog Number
Apollo Scientific	OR30403

Database	Data ID
PubChem	292536

M. W.

233.52004

CAS

Similarity

N/A

ID: 87142

3-(1-phenylhydrazin-1-yl)-1$l^{6}-thiolane-1,1-dione

$$$$ Data

M. F.

C10H14N2O2S

Suppliers	Catalog Number
Apollo Scientific	OR30405

Database	Data ID
PubChem	2801748

M. W.

226.29536

CAS

Similarity

N/A

ID: 87143

N,N-dimethylnon-2-ynamide

$$$$ Data

M. F.

C11H19NO

Suppliers	Catalog Number
Apollo Scientific	OR30406

Database	Data ID
PubChem	2801749

M. W.

181.27466

CAS

Similarity

N/A

ID: 87144

3-(2-hydroxyphenyl)-1,3-diphenylpropan-1-one

$$$$ Data

M. F.

C21H18O2

Suppliers	Catalog Number
Apollo Scientific	OR30407

Database	Data ID
PubChem	610256

M. W.

302.36642

CAS

Similarity

N/A

ID: 87145

2-(2,4,6-trimethylphenyl)acetic acid

$$$$ Data More

M. F.

C11H14O2

Suppliers	Catalog Number
Sigma Aldrich	554286
Alfa Aesar	L00334
Apollo Scientific	OR30409

Database	Data ID
PubChem	78123

M. W.

178.22766

CAS

52629-46-6

Similarity

N/A

ID: 87146

3-({[(2R)-2-amino-2-carboxyethyl]sulfanyl}methyl)-2,2,5,5-tetramethyl-2,5-dihydr...

$$$$ Data

M. F.

C12H21N2O3S-

Suppliers	Catalog Number
Apollo Scientific	OR3040T

Database	Data ID
PubChem	44119297

M. W.

273.37174

CAS

Similarity

N/A

ID: 87147

thiophene-2-thiol

$$$$ Data More

M. F.

C4H4S2

Suppliers	Catalog Number
Sigma Aldrich	W306207
Alfa Aesar	B22642
Apollo Scientific	OR3041

Database	Data ID
PubChem	522674

M. W.

116.20456

CAS

7774-74-5

Similarity

N/A

ID: 87148

2,2,5,5-tetramethyloxolan-3-one

$$$$ Data

M. F.

C8H14O2

Suppliers	Catalog Number
Sigma Aldrich	310603
Apollo Scientific	OR30411
Enamine	EN300-102944

Database	Data ID
PubChem	138511

M. W.

142.19556

CAS

5455-94-7

Similarity

N/A

ID: 87149

7-(tert-butoxy)bicyclo[2.2.1]hepta-2,5-diene

$$$$ Data

M. F.

C11H16O

Suppliers	Catalog Number
Apollo Scientific	OR30413

Database	Data ID
PubChem	70138

M. W.

164.24414

CAS

Similarity

N/A

ID: 87150

4-hydroxy-2,3,6-trimethylphenyl acetate

$$$$ Data

M. F.

C11H14O3

Suppliers	Catalog Number
Apollo Scientific	OR30414

Database	Data ID
PubChem	119024

M. W.

194.22706

CAS

36592-62-8

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