Chembase list of 866358 unique molecular structures

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

$$$$ Data

M. F.

C9H12BrN3O2

Suppliers	Catalog Number
ChemBridge	4035781
Chemik	CHH07001

Database	Data ID
PubChem	18549354

M. W.

274.11448

CAS

883231-23-0

Similarity

N/A

ID: 180452

(2-{[(tert-butoxy)carbonyl]amino}pyrimidin-5-yl)boronic acid

$$$$ Data

M. F.

C9H14BN3O4

Suppliers	Catalog Number
Chemik	CBC04002
Bide Pharmatech	BD165138
A&J Pharmtech	AJA-O4862

Database	Data ID
PubChem	45489688

M. W.

239.03616

CAS

883231-25-2

Similarity

N/A

ID: 180453

(2-{bis[(tert-butoxy)carbonyl]amino}pyrimidin-5-yl)boronic acid

$$$$ Data

M. F.

C14H22BN3O6

Suppliers	Catalog Number
Chemik	CBC04003

Database	Data ID
PubChem	66545386

M. W.

339.15198

CAS

1360950-40-8

Similarity

N/A

ID: 180454

3,4-dihydro-2H-1,4-benzoxazine-8-carboxylic acid

$$$$ Data

M. F.

C9H9NO3

Suppliers	Catalog Number
Chemik	CHH219308

Database	Data ID
PubChem	53403841

M. W.

179.17266

CAS

1007875-97-5

Similarity

N/A

ID: 180455

(3E)-3-(quinolin-2-ylmethylidene)-2,3-dihydro-1H-isoindol-1-one

$$$$ Data

M. F.

C18H12N2O

Suppliers	Catalog Number
Chemik	CHH16536

Database	Data ID
PubChem	11039335

M. W.

272.30068

CAS

13481-47-5

Similarity

N/A

ID: 180456

4-chloro-1-ethyl-1H-pyrazolo[3,4-b]pyridine-5-carboxylic acid

$$$$ Data

M. F.

C9H8ClN3O2

Suppliers	Catalog Number
Chemik	CHHZ03807

Database	Data ID
PubChem	18348778

M. W.

225.63172

CAS

59060-16-1

Similarity

N/A

ID: 180457

3-(2-aminoethyl)-6-fluoro-5-methoxy-1H-indole-2-carboxylic acid

$$$$ Data

M. F.

C12H13FN2O3

Suppliers	Catalog Number
Chemik	CHH15002

Database	Data ID
PubChem	616432

M. W.

252.2416232

CAS

962106-04-1

Similarity

N/A

ID: 180458

3,4-dichlorobutanenitrile

$$$$ Data

M. F.

C4H5Cl2N

Suppliers	Catalog Number
Chemik	CHOZ0014

Database	Data ID
PubChem	542761

M. W.

137.9952

CAS

34362-21-5

Similarity

N/A

ID: 180459

5-bromo-4-N-ethylpyridine-3,4-diamine

$$$$ Data

M. F.

C7H10BrN3

Suppliers	Catalog Number
Chemik	CHHZ03809

Database	Data ID
PubChem	24903729

M. W.

216.0784

CAS

607371-03-9

Similarity

N/A

ID: 180460

2-methyl-2-(methylamino)propan-1-ol

$$$$ Data

M. F.

C5H13NO

Suppliers	Catalog Number
Chemik	CHOZ0015
Enamine	EN300-56393
Bide Pharmatech	BD260979

Database	Data ID
PubChem	422780

M. W.

103.16282

CAS

27646-80-6

Similarity

N/A

ID: 180461

1,3-dibromo-2-methoxybenzene

$$$$ Data

M. F.

C7H6Br2O

Suppliers	Catalog Number
Chemik	CHB56002
Bide Pharmatech	BD68060

Database	Data ID
PubChem	181584

M. W.

265.92994

CAS

38603-09-7

Similarity

N/A

ID: 180462

[3-(4-nitrophenyl)pentan-3-yl]phosphonate

$$$$ Data

M. F.

C11H14NO5P--

Suppliers	Catalog Number
Chemik	CHB96109

Database	Data ID
PubChem	66545388

M. W.

271.206321

CAS

2609-49-6

Similarity

N/A

ID: 180463

(3-bromo-5-chlorophenyl)boronic acid

$$$$ Data

M. F.

C6H5BBrClO2

Suppliers	Catalog Number
Chemik	CBC04005
A&J Pharmtech	AJA-O35873

Database	Data ID
PubChem	53216753

M. W.

235.2707

CAS

1186403-17-7

Similarity

N/A

ID: 180464

[5-chloro-6-(2-methylpropoxy)pyridin-3-yl]boronic acid

$$$$ Data

M. F.

C9H13BClNO3

Suppliers	Catalog Number
Chemik	CBC04006

Database	Data ID
PubChem	46739600

M. W.

229.46842

CAS

1217500-89-4

Similarity

N/A

ID: 180465

4-[(E)-2-nitroethenyl]benzonitrile

$$$$ Data

M. F.

C9H6N2O2

Suppliers	Catalog Number
Chemik	CHB28101

Database	Data ID
PubChem	819894

M. W.

174.15614

CAS

5153-73-1

Similarity

N/A

ID: 180466

5-(bromomethyl)-3-(4-fluorophenyl)-1,2-oxazole

$$$$ Data

M. F.

C10H7BrFNO

Suppliers	Catalog Number
Chemik	CHH20601
Enamine	EN300-38958
A&J Pharmtech	AJA-O29876

Database	Data ID
PubChem	20339720

M. W.

256.0710832

CAS

5262-25-9

Similarity

N/A

ID: 180467

2-(propan-2-yl)-1,2-dihydroisoquinolin-1-one

$$$$ Data

M. F.

C12H13NO

Suppliers	Catalog Number
Chemik	CHH16537

Database	Data ID
PubChem	14438177

M. W.

187.23772

CAS

101712-97-4

Similarity

N/A

ID: 180468

[2-(hydroxymethyl)pyridin-3-yl]methanol

$$$$ Data

M. F.

C7H9NO2

Suppliers	Catalog Number
Chemik	CHHZ00602

Database	Data ID
PubChem	12758260

M. W.

139.15186

CAS

38070-79-0

Similarity

N/A

ID: 180469

ethyl 4-methyl-1H-pyrrole-2-carboxylate

$$$$ Data

M. F.

C8H11NO2

Suppliers	Catalog Number
Chemik	CHH16101

Database	Data ID
PubChem	643361

M. W.

153.17844

CAS

40611-85-6

Similarity

N/A

ID: 180470

2-methylbenzo[f]quinoline

$$$$ Data

M. F.

C14H11N

Suppliers	Catalog Number
Chemik	CHH16538

Database	Data ID
PubChem	170172

M. W.

193.24384

CAS

85-06-3

Similarity

N/A

ID: 180471

tert-butyl (3R)-3-[(propan-2-yl)amino]piperidine-1-carboxylate

$$$$ Data

M. F.

C13H26N2O2

Suppliers	Catalog Number
Chemik	CHH16102

Database	Data ID
PubChem	53256475

M. W.

242.35774

CAS

Similarity

N/A

ID: 180472

1-hexyl-4-methylbenzene

$$$$ Data

M. F.

C13H20

Suppliers	Catalog Number
Chemik	CHB86101

Database	Data ID
PubChem	519194

M. W.

176.2979

CAS

Similarity

N/A

ID: 180473

2-(4-bromophenyl)propan-2-ol

$$$$ Data

M. F.

C9H11BrO

Suppliers	Catalog Number
Chemik	CHB55201
Enamine	EN300-72228
Bide Pharmatech	BD208551

Database	Data ID
PubChem	12681920

M. W.

215.08704

CAS

2077-19-2

Similarity

N/A

ID: 180474

1-bromo-2-(difluoromethoxy)-3-methylbenzene

$$$$ Data

M. F.

C8H7BrF2O

Suppliers	Catalog Number
Chemik	CHB55202

Database	Data ID
PubChem	45158715

M. W.

237.0413864

CAS

954236-08-9

Similarity

N/A

ID: 180475

2,2-dimethyl-1,3-dioxan-5-one

$$$$ Data

M. F.

C6H10O3

Suppliers	Catalog Number
Chemik	CHH20602
A&J Pharmtech	AJA-O12742

Database	Data ID
PubChem	2733141

M. W.

130.1418

CAS

74181-34-3

Similarity

N/A

ID: 180476

({5-[(4-methoxyphenyl)methyl]-4,6-dimethylpyrimidin-2-yl}sulfanyl)formic acid

$$$$ Data

M. F.

C15H16N2O3S

Suppliers	Catalog Number
Chemik	CHH07003

Database	Data ID
PubChem	66545395

M. W.

304.36414

CAS

41840-29-3

Similarity

N/A

ID: 180477

(1S,2S,10R,11S,14R,15R)-2,15-dimethyl-14-[(2R)-6-methylheptan-2-yl]tetracyclo[8....

$$$$ Data

M. F.

C27H48O

Suppliers	Catalog Number
Chemik	CHO0237

Database	Data ID
PubChem	10992748

M. W.

388.66942

CAS

80-97-7

Similarity

N/A

ID: 180478

(4-methoxypiperidin-4-yl)methanol

$$$$ Data

M. F.

C7H15NO2

Suppliers	Catalog Number
Chemik	CHH16103

Database	Data ID
PubChem	53399400

M. W.

145.1995

CAS

1082040-31-0

Similarity

N/A

ID: 180479

2-(aminooxy)acetic acid hydrochloride

$$$$ Data

M. F.

C2H6ClNO3

Suppliers	Catalog Number
Chemik	CHO0240
A&J Pharmtech	AJA-O14717

Database	Data ID
PubChem	10129958

M. W.

127.52694

CAS

20295-82-3

Similarity

N/A

ID: 180480

3-(aminomethyl)-4,6-dimethyl-1,2-dihydropyridin-2-one

$$$$ Data

M. F.

C8H12N2O

Suppliers	Catalog Number
Chemik	CHH04101
Enamine	EN300-34346

Database	Data ID
PubChem	7063844

M. W.

152.19368

CAS

771579-27-2

Similarity

N/A

ID: 180481

5-(chloromethyl)-2-methoxypyridine

$$$$ Data More

M. F.

C7H8ClNO

Suppliers	Catalog Number
Chemik	CHH04102
Enamine	EN300-86321
Bide Pharmatech	BD236668

Database	Data ID
PubChem	13752891

M. W.

157.59752

CAS

101990-70-9

Similarity

N/A

ID: 180482

ethyl 5-bromo-1H-1,3-benzodiazole-2-carboxylate

$$$$ Data

M. F.

C10H9BrN2O2

Suppliers	Catalog Number
Chemik	CHH18824
A&J Pharmtech	AJA-O29558

Database	Data ID
PubChem	44203013

M. W.

269.09466

CAS

144167-50-0

Similarity

N/A

ID: 180483

[4-(quinolin-8-yl)phenyl]boronic acid

$$$$ Data

M. F.

C15H12BNO2

Suppliers	Catalog Number
Chemik	CBC00201

Database	Data ID
PubChem	71753078

M. W.

249.07228

CAS

Similarity

N/A

ID: 180484

2-chloro-4,6-bis(naphthalen-2-yl)-1,3,5-triazine

$$$$ Data

M. F.

C23H14ClN3

Suppliers	Catalog Number
Chemik	CHH21001

Database	Data ID
PubChem	59365884

M. W.

367.83036

CAS

1247124-77-1

Similarity

N/A

ID: 180485

2-bromo-4,6-bis(naphthalen-2-yl)-1,3,5-triazine

$$$$ Data

M. F.

C23H14BrN3

Suppliers	Catalog Number
Chemik	CHH21002

Database	Data ID
PubChem	71753079

M. W.

412.28136

CAS

Similarity

N/A

ID: 180486

4-hydroxycyclohexyl N-tert-butyl-N-methylcarbamate

$$$$ Data

M. F.

C12H23NO3

Suppliers	Catalog Number
Chemik	CHO0241

Database	Data ID
PubChem	71753080

M. W.

229.31592

CAS

1188475-96-8

Similarity

N/A

ID: 180487

4-(2-hydroxyethyl)cyclohexan-1-one

$$$$ Data

M. F.

C8H14O2

Suppliers	Catalog Number
Chemik	CHO0242

Database	Data ID
PubChem	15700392

M. W.

142.19556

CAS

32863-01-7

Similarity

N/A

ID: 180488

ethyl 2-{1,4-dioxaspiro[4.5]decan-8-yl}acetate

$$$$ Data

M. F.

C12H20O4

Suppliers	Catalog Number
Chemik	CHO0243

Database	Data ID
PubChem	15700391

M. W.

228.2848

CAS

62141-26-8

Similarity

N/A

ID: 180489

2-{1,4-dioxaspiro[4.5]decan-8-yl}ethan-1-ol

$$$$ Data

M. F.

C10H18O3

Suppliers	Catalog Number
Chemik	CHO0244

Database	Data ID
PubChem	11805458

M. W.

186.24812

CAS

135761-76-1

Similarity

N/A

ID: 180490

2-(3-bromo-4-hydroxyphenyl)acetonitrile

$$$$ Data

M. F.

C8H6BrNO

Suppliers	Catalog Number
Chemik	CHB09302

Database	Data ID
PubChem	11310374

M. W.

212.04334

CAS

73348-21-7

Similarity

N/A

ID: 180491

4-ethenyl-N,N-dimethylaniline

$$$$ Data

M. F.

C10H13N

Suppliers	Catalog Number
Chemik	CHB70601
Bide Pharmatech	BD170906

Database	Data ID
PubChem	137293

M. W.

147.21692

CAS

2039-80-7

Similarity

N/A

ID: 180492

4-hydrazinylbenzamide

$$$$ Data

M. F.

C7H9N3O

Suppliers	Catalog Number
Chemik	CHB79602

Database	Data ID
PubChem	4770377

M. W.

151.16586

CAS

74885-67-9

Similarity

N/A

ID: 180493

pyridine-2-sulfonyl chloride

$$$$ Data

M. F.

C5H4ClNO2S

Suppliers	Catalog Number
Chemik	CHH04104
A&J Pharmtech	AJA-O35212

Database	Data ID
PubChem	3787675

M. W.

177.60876

CAS

111480-84-3

Similarity

N/A

ID: 180494

1,3-benzothiazole-2-sulfonyl chloride

$$$$ Data

M. F.

C7H4ClNO2S2

Suppliers	Catalog Number
Chemik	CHHZ17002

Database	Data ID
PubChem	9794661

M. W.

233.69516

CAS

2824-46-6

Similarity

N/A

ID: 180495

pyrimidine-2-sulfonyl chloride

$$$$ Data

M. F.

C4H3ClN2O2S

Suppliers	Catalog Number
Chemik	CHH08002

Database	Data ID
PubChem	11528448

M. W.

178.59682

CAS

220548-03-8

Similarity

N/A

ID: 180496

3-[(2-methylprop-2-enoyl)oxy]-2-[(trimethylsilyl)oxy]propyl 2-methylprop-2-enoat...

$$$$ Data

M. F.

C14H24O5Si

Suppliers	Catalog Number
Chemik	CHO0245

Database	Data ID
PubChem	22016242

M. W.

300.42286

CAS

247244-66-2

Similarity

N/A

ID: 180497

3-hydroxy-1-(4-hydroxy-3-methoxyphenyl)-2-(2-methoxyphenoxy)propan-1-one

$$$$ Data

M. F.

C17H18O6

Suppliers	Catalog Number
Chemik	CHB95601

Database	Data ID
PubChem	369618

M. W.

318.32122

CAS

22317-34-6

Similarity

N/A

ID: 180498

4,6-dichloro-1-methyl-1H-imidazo[4,5-c]pyridin-7-amine

$$$$ Data

M. F.

C7H6Cl2N4

Suppliers	Catalog Number
Chemik	CHH04105

Database	Data ID
PubChem	21083920

M. W.

217.05534

CAS

805316-72-7

Similarity

N/A

ID: 180499

ethyl 5-bromo-1,3,4-thiadiazole-2-carboxylate

$$$$ Data

M. F.

C5H5BrN2O2S

Suppliers	Catalog Number
Chemik	CHHZ17003
Bide Pharmatech	BD161137

Database	Data ID
PubChem	52987824

M. W.

237.0744

CAS

1030613-07-0

Similarity

N/A

ID: 180500

2-chloro-6-(propan-2-yloxy)pyridine-4-carboxylic acid

$$$$ Data

M. F.

C9H10ClNO3

Suppliers	Catalog Number
Chemik	CHH04106

Database	Data ID
PubChem	43166551

M. W.

215.6336

CAS

108994-42-9

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