Chembase list of 866358 unique molecular structures

ID: 62001

methyl 3-oxo-3-[5-oxo-1-(pyridin-4-ylmethyl)pyrrolidin-3-yl]propanoate

$$$$ Data

M. F.

C14H16N2O4

Suppliers	Catalog Number
Matrix Scientific	067307

Database	Data ID
PubChem	46949959

M. W.

276.28784

CAS

Similarity

N/A

ID: 62002

4-benzyl-2-methylmorpholine-2-carboxylic acid hydrochloride

$$$$ Data

M. F.

C13H18ClNO3

Suppliers	Catalog Number
Matrix Scientific	067308

Database	Data ID
PubChem	71298539

M. W.

271.73992

CAS

Similarity

N/A

ID: 62003

5-(5-methyl-1,2,4-oxadiazol-3-yl)-4-(piperidin-3-yl)pyrimidine dihydrochloride

$$$$ Data

M. F.

C12H17Cl2N5O

Suppliers	Catalog Number
Matrix Scientific	067309

Database	Data ID
PubChem	71298540

M. W.

318.20228

CAS

Similarity

N/A

ID: 62004

N-methyl-2-[(2-methylpyrrolidin-2-yl)formamido]acetamide hydrochloride

$$$$ Data

M. F.

C9H18ClN3O2

Suppliers	Catalog Number
Matrix Scientific	067310

Database	Data ID
PubChem	71298541

M. W.

235.71112

CAS

Similarity

N/A

ID: 62005

N-[(3aR,7aR)-2-acetyl-octahydro-1H-pyrrolo[3,4-c]pyridin-3a-yl]acetamide

$$$$ Data

M. F.

C11H19N3O2

Suppliers	Catalog Number
Matrix Scientific	067311

Database	Data ID
PubChem	66510036

M. W.

225.28746

CAS

Similarity

N/A

ID: 62006

3-(1H-pyrazol-1-ylmethyl)piperidine

$$$$ Data

M. F.

C9H15N3

Suppliers	Catalog Number
Matrix Scientific	067312

Database	Data ID
PubChem	56828879

M. W.

165.2355

CAS

Similarity

N/A

ID: 62007

2-(1-cyclopentylpiperidin-2-yl)ethan-1-amine dihydrobromide

$$$$ Data

M. F.

C12H26Br2N2

Suppliers	Catalog Number
Matrix Scientific	067313

Database	Data ID
PubChem	71298542

M. W.

358.15624

CAS

Similarity

N/A

ID: 62008

{4-[2-(pyrrolidin-1-yl)ethoxy]phenyl}methanamine

$$$$ Data

M. F.

C13H20N2O

Suppliers	Catalog Number
Matrix Scientific	067314
Enamine	EN300-74342

Database	Data ID
PubChem	14425929

M. W.

220.3107

CAS

Similarity

N/A

ID: 62009

2-[3-(pyrrolidin-1-yl)propoxy]benzaldehyde

$$$$ Data

M. F.

C14H19NO2

Suppliers	Catalog Number
Matrix Scientific	067315

Database	Data ID
PubChem	13795258

M. W.

233.30616

CAS

Similarity

N/A

ID: 62010

N-[(2-fluorophenyl)methyl]-2,3-dihydro-1,4-benzodioxin-6-amine

$$$$ Data

M. F.

C15H14FNO2

Suppliers	Catalog Number
Matrix Scientific	067317

Database	Data ID
PubChem	18778411

M. W.

259.2755632

CAS

Similarity

N/A

ID: 62011

1-[3-(2,4-dimethylphenoxy)propyl]piperazine

$$$$ Data

M. F.

C15H24N2O

Suppliers	Catalog Number
Matrix Scientific	067318

Database	Data ID
PubChem	23010279

M. W.

248.36386

CAS

Similarity

N/A

ID: 62012

2-[3-(2-fluorophenyl)-1,2-oxazol-5-yl]azepane

$$$$ Data

M. F.

C15H17FN2O

Suppliers	Catalog Number
Matrix Scientific	067319

Database	Data ID
PubChem	43817835

M. W.

260.3066832

CAS

Similarity

N/A

ID: 62013

2-[5-(thiophen-2-yl)-1,2-oxazol-3-yl]azepane

$$$$ Data

M. F.

C13H16N2OS

Suppliers	Catalog Number
Matrix Scientific	067320

Database	Data ID
PubChem	43817834

M. W.

248.34394

CAS

Similarity

N/A

ID: 62014

3-phenylbutan-1-amine

$$$$ Data

M. F.

C10H15N

Suppliers	Catalog Number
ChemBridge	4004088
Matrix Scientific	067321
Enamine	EN300-62250

Database	Data ID
PubChem	3015962

M. W.

149.2328

CAS

38135-56-7

Similarity

N/A

ID: 62015

2-chloro-1-(3-phenylpiperidin-1-yl)ethan-1-one

$$$$ Data

M. F.

C13H16ClNO

Suppliers	Catalog Number
Matrix Scientific	067322

Database	Data ID
PubChem	22288262

M. W.

237.72524

CAS

Similarity

N/A

ID: 62016

1-[2-(2-chloro-5-methylphenoxy)ethyl]piperazine

$$$$ Data

M. F.

C13H19ClN2O

Suppliers	Catalog Number
Matrix Scientific	067323

Database	Data ID
PubChem	762670

M. W.

254.75576

CAS

Similarity

N/A

ID: 62017

(1-methyl-1,4-diazepan-6-yl)methanol dihydrochloride

$$$$ Data

M. F.

C7H18Cl2N2O

Suppliers	Catalog Number
Matrix Scientific	067324

Database	Data ID
PubChem	71298543

M. W.

217.13662

CAS

Similarity

N/A

ID: 62018

1-(azetidine-3-carbonyl)piperidine; trifluoroacetic acid

$$$$ Data

M. F.

C11H17F3N2O3

Suppliers	Catalog Number
Matrix Scientific	067325

Database	Data ID
PubChem	71298544

M. W.

282.2594896

CAS

Similarity

N/A

ID: 62019

methyl 3-(1-acetylpiperidin-4-yl)-3-oxopropanoate

$$$$ Data

M. F.

C11H17NO4

Suppliers	Catalog Number
Matrix Scientific	067326

Database	Data ID
PubChem	46949944

M. W.

227.25698

CAS

Similarity

N/A

ID: 62020

(2-methyl-2,3-dihydro-1-benzofuran-5-yl)methanol

$$$$ Data

M. F.

C10H12O2

Suppliers	Catalog Number
Matrix Scientific	067327

Database	Data ID
PubChem	20163670

M. W.

164.20108

CAS

Similarity

N/A

ID: 62021

methyl 5-(dimethyl-1H-1,2,4-triazol-1-yl)-3-oxopentanoate

$$$$ Data

M. F.

C10H15N3O3

Suppliers	Catalog Number
Matrix Scientific	067328

Database	Data ID
PubChem	46949942

M. W.

225.2444

CAS

Similarity

N/A

ID: 62022

1-{3-[1-(2-aminoethyl)-1H-pyrazolo[3,4-b]pyrazin-3-yl]pyrrolidin-1-yl}ethan-1-on...

$$$$ Data

M. F.

C13H18N6O

Suppliers	Catalog Number
Matrix Scientific	067329

Database	Data ID
PubChem	66509771

M. W.

274.32162

CAS

Similarity

N/A

ID: 62023

methyl 3-(1-benzyl-5-oxopyrrolidin-3-yl)-3-oxopropanoate

$$$$ Data

M. F.

C15H17NO4

Suppliers	Catalog Number
Matrix Scientific	067330

Database	Data ID
PubChem	46949920

M. W.

275.29978

CAS

Similarity

N/A

ID: 62024

methyl 3-[1-(2-methoxyethyl)-5-oxopyrrolidin-3-yl]-3-oxopropanoate

$$$$ Data

M. F.

C11H17NO5

Suppliers	Catalog Number
Matrix Scientific	067331

Database	Data ID
PubChem	46949924

M. W.

243.25638

CAS

Similarity

N/A

ID: 62025

methyl 3-oxo-3-[5-oxo-1-(prop-2-en-1-yl)pyrrolidin-3-yl]propanoate

$$$$ Data

M. F.

C11H15NO4

Suppliers	Catalog Number
Matrix Scientific	067332

Database	Data ID
PubChem	46949927

M. W.

225.2411

CAS

Similarity

N/A

ID: 62026

methyl 3-oxo-3-[5-(propan-2-yl)-1,2-oxazol-3-yl]propanoate

$$$$ Data

M. F.

C10H13NO4

Suppliers	Catalog Number
Matrix Scientific	067333

Database	Data ID
PubChem	46949943

M. W.

211.21452

CAS

Similarity

N/A

ID: 62027

methyl 3-(3-cyclopropyl-1H-pyrazol-5-yl)-3-oxopropanoate

$$$$ Data

M. F.

C10H12N2O3

Suppliers	Catalog Number
Matrix Scientific	067334

Database	Data ID
PubChem	46949932

M. W.

208.21388

CAS

Similarity

N/A

ID: 62028

methyl 4-(2H-1,3-benzodioxol-5-yloxy)-3-oxopentanoate

$$$$ Data

M. F.

C13H14O6

Suppliers	Catalog Number
Matrix Scientific	067335

Database	Data ID
PubChem	46949934

M. W.

266.24666

CAS

Similarity

N/A

ID: 62029

methyl 3-(1,5-dimethyl-1H-pyrazol-4-yl)-3-oxopropanoate

$$$$ Data

M. F.

C9H12N2O3

Suppliers	Catalog Number
Matrix Scientific	067336

Database	Data ID
PubChem	46949937

M. W.

196.20318

CAS

Similarity

N/A

ID: 62030

methyl 3-oxo-3-[5-oxo-1-(pyridin-2-ylmethyl)pyrrolidin-3-yl]propanoate

$$$$ Data

M. F.

C14H16N2O4

Suppliers	Catalog Number
Matrix Scientific	067337

Database	Data ID
PubChem	46949928

M. W.

276.28784

CAS

Similarity

N/A

ID: 62031

N-cyclopentyl-3-[5,7-dimethyl-2-(pyrrolidin-3-yl)pyrazolo[1,5-a]pyrimidin-6-yl]p...

$$$$ Data

M. F.

C20H31Cl2N5O

Suppliers	Catalog Number
Matrix Scientific	067338

Database	Data ID
PubChem	71298545

M. W.

428.39904

CAS

Similarity

N/A

ID: 62032

1-propyl-3-{[3-(thiophen-2-yl)phenyl]methyl}piperazin-2-one

$$$$ Data

M. F.

C18H22N2OS

Suppliers	Catalog Number
Matrix Scientific	067339

Database	Data ID
PubChem	66509310

M. W.

314.44508

CAS

Similarity

N/A

ID: 62033

1-{decahydropyrrolo[3,4-b]azepin-7-yl}ethan-1-one

$$$$ Data

M. F.

C10H18N2O

Suppliers	Catalog Number
Matrix Scientific	067340

Database	Data ID
PubChem	71298546

M. W.

182.26272

CAS

Similarity

N/A

ID: 62034

(2R,3aS,9aR)-2-benzyl-4-methyl-decahydro-1H-pyrrolo[3,2-b]azocine

$$$$ Data

M. F.

C17H26N2

Suppliers	Catalog Number
Matrix Scientific	067341

Database	Data ID
PubChem	71298547

M. W.

258.40174

CAS

Similarity

N/A

ID: 62035

methyl 5-(1H-1,2,3-benzotriazol-1-yl)-3-oxohexanoate

$$$$ Data

M. F.

C13H15N3O3

Suppliers	Catalog Number
Matrix Scientific	067342

Database	Data ID
PubChem	46949919

M. W.

261.2765

CAS

Similarity

N/A

ID: 62036

1-[(3aS,9aR)-decahydro-1H-pyrrolo[3,2-b]azocin-4-yl]ethan-1-one

$$$$ Data

M. F.

C11H20N2O

Suppliers	Catalog Number
Matrix Scientific	067343

Database	Data ID
PubChem	66509270

M. W.

196.2893

CAS

Similarity

N/A

ID: 62037

3-[(3-phenylphenyl)methyl]-1-propylpiperazin-2-one

$$$$ Data

M. F.

C20H24N2O

Suppliers	Catalog Number
Matrix Scientific	067344

Database	Data ID
PubChem	66509308

M. W.

308.41736

CAS

Similarity

N/A

ID: 62038

2-(piperidin-4-ylmethyl)pyridine dihydrochloride

$$$$ Data

M. F.

C11H18Cl2N2

Suppliers	Catalog Number
Matrix Scientific	067345
Apollo Scientific	OR12878

Database	Data ID
PubChem	17998838

M. W.

249.18002

CAS

Similarity

N/A

ID: 62039

methyl 3-(1-cyclohexyl-5-oxopyrrolidin-3-yl)-3-oxopropanoate

$$$$ Data

M. F.

C14H21NO4

Suppliers	Catalog Number
Matrix Scientific	067346

Database	Data ID
PubChem	46949921

M. W.

267.32084

CAS

Similarity

N/A

ID: 62040

(7-methyl-2,3-dihydro-1,4-benzodioxin-6-yl)methanamine

$$$$ Data

M. F.

C10H13NO2

Suppliers	Catalog Number
Matrix Scientific	067347

Database	Data ID
PubChem	16766585

M. W.

179.21572

CAS

Similarity

N/A

ID: 62041

methyl 4-methyl-5-(5-methyl-1H-pyrazol-1-yl)-3-oxopentanoate

$$$$ Data

M. F.

C11H16N2O3

Suppliers	Catalog Number
Matrix Scientific	067348

Database	Data ID
PubChem	46949911

M. W.

224.25634

CAS

Similarity

N/A

ID: 62042

9-(aminomethyl)-1-methyl-3,6-diazatricyclo[4.3.1.1^{3,8}]undecan-9-ol

$$$$ Data

M. F.

C11H21N3O

Suppliers	Catalog Number
Matrix Scientific	067349

Database	Data ID
PubChem	18523917

M. W.

211.30394

CAS

Similarity

N/A

ID: 62043

methyl 3-(dimethyl-1,3-thiazol-5-yl)-3-oxopropanoate

$$$$ Data

M. F.

C9H11NO3S

Suppliers	Catalog Number
Matrix Scientific	067350

Database	Data ID
PubChem	46949917

M. W.

213.25354

CAS

Similarity

N/A

ID: 62044

methyl 4-(2-fluorophenyl)-3-oxobutanoate

$$$$ Data

M. F.

C11H11FO3

Suppliers	Catalog Number
Matrix Scientific	067351

Database	Data ID
PubChem	43819144

M. W.

210.2016432

CAS

Similarity

N/A

ID: 62045

methyl 4-(2-methoxyphenyl)-3-oxobutanoate

$$$$ Data

M. F.

C12H14O4

Suppliers	Catalog Number
Matrix Scientific	067352

Database	Data ID
PubChem	15752177

M. W.

222.23716

CAS

Similarity

N/A

ID: 62046

1-[3-(6-chloro-2-methylpyrimidin-4-yl)piperidin-1-yl]-2,2-dimethylpropan-1-one

$$$$ Data

M. F.

C15H22ClN3O

Suppliers	Catalog Number
Matrix Scientific	067353

Database	Data ID
PubChem	66509929

M. W.

295.80768

CAS

Similarity

N/A

ID: 62047

1-[4-(4-chloro-6-methylpyrimidin-2-yl)piperidin-1-yl]-2-methoxyethan-1-one

$$$$ Data

M. F.

C13H18ClN3O2

Suppliers	Catalog Number
Matrix Scientific	067354

Database	Data ID
PubChem	66509927

M. W.

283.75392

CAS

Similarity

N/A

ID: 62048

1-{4-[(5-bromopyrazin-2-yl)methyl]piperidin-1-yl}ethan-1-one

$$$$ Data

M. F.

C12H16BrN3O

Suppliers	Catalog Number
Matrix Scientific	067355

Database	Data ID
PubChem	66509819

M. W.

298.17894

CAS

Similarity

N/A

ID: 62049

1-[4-(6-chloro-2-methylpyrimidin-4-yl)piperidin-1-yl]-2-methoxyethan-1-one

$$$$ Data

M. F.

C13H18ClN3O2

Suppliers	Catalog Number
Matrix Scientific	067356

Database	Data ID
PubChem	66509916

M. W.

283.75392

CAS

Similarity

N/A

ID: 62050

1-{4-[(5-bromopyrazin-2-yl)methyl]azepan-1-yl}ethan-1-one

$$$$ Data

M. F.

C13H18BrN3O

Suppliers	Catalog Number
Matrix Scientific	067357

Database	Data ID
PubChem	66509820

M. W.

312.20552

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