Chembase list of 866358 unique molecular structures

methyl 5-formyl-2-(morpholin-4-yl)benzoate

$$$$ Data

M. F.

C13H15NO4

Suppliers	Catalog Number
Key Organics	EF-0710

Database	Data ID
PubChem	66545147

M. W.

249.2625

CAS

Similarity

N/A

ID: 112952

methyl 5-formyl-2-(piperidin-1-yl)benzoate

$$$$ Data

M. F.

C14H17NO3

Suppliers	Catalog Number
Key Organics	EF-0713

Database	Data ID
PubChem	66545148

M. W.

247.28968

CAS

Similarity

N/A

ID: 112953

methyl 5-formyl-2-(pyrrolidin-1-yl)benzoate

$$$$ Data

M. F.

C13H15NO3

Suppliers	Catalog Number
Key Organics	EF-0714

Database	Data ID
PubChem	66545149

M. W.

233.2631

CAS

Similarity

N/A

ID: 112954

methyl 2-(3-{[(tert-butoxy)carbonyl]amino}piperidin-1-yl)-5-formylbenzoate

$$$$ Data

M. F.

C19H26N2O5

Suppliers	Catalog Number
Key Organics	EF-0717

Database	Data ID
PubChem	66545151

M. W.

362.42014

CAS

Similarity

N/A

ID: 112955

tert-butyl 4-[4-formyl-2-(methoxycarbonyl)phenyl]piperazine-1-carboxylate

$$$$ Data

M. F.

C18H24N2O5

Suppliers	Catalog Number
Key Organics	EF-0718

Database	Data ID
PubChem	66545154

M. W.

348.39356

CAS

Similarity

N/A

ID: 112956

tert-butyl N-{4H,5H,6H-cyclopenta[b]thiophen-2-yl}carbamate

$$$$ Data

M. F.

C12H17NO2S

Suppliers	Catalog Number
Key Organics	EF-0721

Database	Data ID
PubChem	66545155

M. W.

239.33388

CAS

Similarity

N/A

ID: 112957

4-fluoro-N,5-dimethyl-2-nitroaniline

$$$$ Data

M. F.

C8H9FN2O2

Suppliers	Catalog Number
Key Organics	EF-0731

Database	Data ID
PubChem	66545159

M. W.

184.1676632

CAS

Similarity

N/A

ID: 112958

5-acetyl-8-[(4-fluorophenyl)methoxy]-1,2-dihydroquinolin-2-one

$$$$ Data

M. F.

C18H14FNO3

Suppliers	Catalog Number
Key Organics	EF-0734

Database	Data ID
PubChem	66545165

M. W.

311.3070632

CAS

Similarity

N/A

ID: 112959

methyl pyrrolidine-2-carboxylate hydrochloride

$$$$ Data

M. F.

C6H12ClNO2

Suppliers	Catalog Number
Key Organics	EG-0005
Bide Pharmatech	BD132901
A&J Pharmtech	AJA-O602

Database	Data ID
PubChem	12223519

M. W.

165.61798

CAS

79397-50-5

Similarity

N/A

ID: 112960

methyl 1-(3,3-dimethyl-2-oxopentanoyl)pyrrolidine-2-carboxylate

$$$$ Data

M. F.

C13H21NO4

Suppliers	Catalog Number
Key Organics	EG-0048

Database	Data ID
PubChem	22257827

M. W.

255.31014

CAS

186268-77-9

Similarity

N/A

ID: 112961

1-(3,3-dimethyl-2-oxopentanoyl)pyrrolidine-2-carboxylic acid

$$$$ Data

M. F.

C12H19NO4

Suppliers	Catalog Number
Key Organics	EG-0058

Database	Data ID
PubChem	17791209

M. W.

241.28356

CAS

186268-78-0

Similarity

N/A

ID: 112962

3-(triphenyl-λ⁵-phosphanylidene)pyrrolidine-2,5-dione

$$$$ Data

M. F.

C22H18NO2P

Suppliers	Catalog Number
Key Organics	EG-0103

Database	Data ID
PubChem	13611383

M. W.

359.357581

CAS

Similarity

N/A

ID: 112963

tert-butyl 5'H-spiro[piperidine-4,4'-pyrrolo[1,2-a]quinoxaline]-1-carboxylate

$$$$ Data

M. F.

C20H25N3O2

Suppliers	Catalog Number
Key Organics	FC-0612

Database	Data ID
PubChem	27282739

M. W.

339.4314

CAS

Similarity

N/A

ID: 112964

2,4-dimethyl 3-amino-1H-pyrrole-2,4-dicarboxylate

$$$$ Data

M. F.

C8H10N2O4

Suppliers	Catalog Number
Key Organics	FG-0711
A&J Pharmtech	AJA-O19473

Database	Data ID
PubChem	11084808

M. W.

198.176

CAS

180059-04-5

Similarity

N/A

ID: 112965

methyl 5-acetyl-4-iodo-1H-pyrrole-2-carboxylate

$$$$ Data

M. F.

C8H8INO3

Suppliers	Catalog Number
Key Organics	FG-0718

Database	Data ID
PubChem	71300218

M. W.

293.05849

CAS

Similarity

N/A

ID: 112966

methyl 1'-benzyl-2-oxo-1,2-dihydrospiro[indole-3,2'-pyrrolidine]-4'-carboxylate

$$$$ Data

M. F.

C20H20N2O3

Suppliers	Catalog Number
Key Organics	GA-0714

Database	Data ID
PubChem	53396443

M. W.

336.3844

CAS

Similarity

N/A

ID: 112967

tert-butyl 7'-methoxy-5'H-spiro[piperidine-4,4'-pyrrolo[1,2-a]quinoxaline]-1-car...

$$$$ Data

M. F.

C21H27N3O3

Suppliers	Catalog Number
Key Organics	GC-0610

Database	Data ID
PubChem	30772101

M. W.

369.45738

CAS

Similarity

N/A

ID: 112968

2-chloro-6-(chloromethyl)pyridin-3-ol

$$$$ Data

M. F.

C6H5Cl2NO

Suppliers	Catalog Number
Key Organics	GD-0006

Database	Data ID
PubChem	66545171

M. W.

178.016

CAS

Similarity

N/A

ID: 112969

2-chloro-6-(hydroxymethyl)-4-[2-(trimethylsilyl)ethynyl]pyridin-3-ol

$$$$ Data

M. F.

C11H14ClNO2Si

Suppliers	Catalog Number
Key Organics	GD-0009

Database	Data ID
PubChem	10515206

M. W.

255.77286

CAS

208519-38-4

Similarity

N/A

ID: 112970

methyl 4-({8-chloro-2-methyl-1H,2H,3H,4H,5H-pyrido[4,3-b]indol-5-yl}methyl)benzo...

$$$$ Data

M. F.

C21H21ClN2O2

Suppliers	Catalog Number
Key Organics	GG-0209

Database	Data ID
PubChem	71300220

M. W.

368.85664

CAS

Similarity

N/A

ID: 112971

3-iodoquinolin-8-amine

$$$$ Data

M. F.

C9H7IN2

Suppliers	Catalog Number
Key Organics	GG-0221

Database	Data ID
PubChem	12032368

M. W.

270.06975

CAS

Similarity

N/A

ID: 112972

1-acetylcyclopropane-1-carboxylic acid

$$$$ Data

M. F.

C6H8O3

Suppliers	Catalog Number
Key Organics	GG-0702

Database	Data ID
PubChem	14200856

M. W.

128.12592

CAS

56172-71-5

Similarity

N/A

ID: 112973

4-tert-butyl 2-ethyl (2R,4R)-5-(furan-2-yl)pyrrolidine-2,4-dicarboxylate

$$$$ Data

M. F.

C16H23NO5

Suppliers	Catalog Number
Key Organics	HC-0209

Database	Data ID
PubChem	43811193

M. W.

309.35752

CAS

Similarity

N/A

ID: 112974

5-iodo-3-methyl-2-(trifluoroacetamido)benzoic acid

$$$$ Data

M. F.

C10H7F3INO3

Suppliers	Catalog Number
Key Organics	HD-0735

Database	Data ID
PubChem	59842967

M. W.

373.0671596

CAS

Similarity

N/A

ID: 112975

5-benzyl-octahydropyrrolo[3,4-c]pyrrole-1,3-dione

$$$$ Data

M. F.

C13H14N2O2

Suppliers	Catalog Number
Key Organics	HG-0008
Enamine	EN300-128994

Database	Data ID
PubChem	4564902

M. W.

230.26246

CAS

848591-86-6

Similarity

N/A

ID: 112976

1-bromo-2-(chloromethyl)-4-fluorobenzene

$$$$ Data

M. F.

C7H5BrClF

Suppliers	Catalog Number
Key Organics	HG-0023

Database	Data ID
PubChem	43350834

M. W.

223.4700032

CAS

857276-61-0

Similarity

N/A

ID: 112977

methyl (2E)-2-(N-hydroxyimino)-3-(4-hydroxyphenyl)propanoate

$$$$ Data

M. F.

C10H11NO4

Suppliers	Catalog Number
Key Organics	HG-0044

Database	Data ID
PubChem	71299793

M. W.

209.19864

CAS

50563-23-0

Similarity

N/A

ID: 112978

methyl 3-{4-[(2-bromo-5-fluorophenyl)methoxy]phenyl}propanoate

$$$$ Data

M. F.

C17H16BrFO3

Suppliers	Catalog Number
Key Organics	HG-0047

Database	Data ID
PubChem	71300221

M. W.

367.2095432

CAS

Similarity

N/A

ID: 112979

methyl 3-(3-bromo-4-hydroxyphenyl)-2-(N-hydroxyimino)propanoate

$$$$ Data

M. F.

C10H10BrNO4

Suppliers	Catalog Number
Key Organics	HG-0050

Database	Data ID
PubChem	71300222

M. W.

288.0947

CAS

Similarity

N/A

ID: 112980

tert-butyl 5-benzyl-octahydropyrrolo[3,4-c]pyrrole-2-carboxylate

$$$$ Data

M. F.

C18H26N2O2

Suppliers	Catalog Number
Key Organics	HG-0052

Database	Data ID
PubChem	4171147

M. W.

302.41124

CAS

186202-73-3

Similarity

N/A

ID: 112981

6-bromo-N-[(4-methylphenyl)methyl]hexanamide

$$$$ Data

M. F.

C14H20BrNO

Suppliers	Catalog Number
Key Organics	HG-0216

Database	Data ID
PubChem	71300246

M. W.

298.2187

CAS

Similarity

N/A

ID: 112982

1-{4-iodo-1H-pyrrolo[2,3-b]pyridin-1-yl}ethan-1-one

$$$$ Data

M. F.

C9H7IN2O

Suppliers	Catalog Number
Key Organics	HG-0221

Database	Data ID
PubChem	11266132

M. W.

286.06915

CAS

443729-67-7

Similarity

N/A

ID: 112983

ethyl 2-[(4-methoxyphenyl)amino]-4-methyl-1,3-thiazole-5-carboxylate

$$$$ Data

M. F.

C14H16N2O3S

Suppliers	Catalog Number
Key Organics	HG-0703

Database	Data ID
PubChem	8015374

M. W.

292.35344

CAS

109688-84-8

Similarity

N/A

ID: 112984

methyl 3-fluoro-4-{[(2-hydroxyphenyl)methyl]amino}benzoate

$$$$ Data

M. F.

C15H14FNO3

Suppliers	Catalog Number
Key Organics	HG-0704

Database	Data ID
PubChem	71300236

M. W.

275.2749632

CAS

Similarity

N/A

ID: 112985

3-methoxy-2-methylbenzohydrazide

$$$$ Data

M. F.

C9H12N2O2

Suppliers	Catalog Number
Key Organics	HG-0706

Database	Data ID
PubChem	45091273

M. W.

180.20378

CAS

740799-69-3

Similarity

N/A

ID: 112986

tert-butyl 2,6-diazaspiro[4.5]decane-6-carboxylate hydrochloride

$$$$ Data

M. F.

C13H25ClN2O2

Suppliers	Catalog Number
Key Organics	HG-0707

Database	Data ID
PubChem	71300242

M. W.

276.8028

CAS

Similarity

N/A

ID: 112987

methyl 6-amino-2,5-dichloropyrimidine-4-carboxylate

$$$$ Data

M. F.

C6H5Cl2N3O2

Suppliers	Catalog Number
Key Organics	HG-0708

Database	Data ID
PubChem	312630

M. W.

222.0288

CAS

502142-81-6

Similarity

N/A

ID: 112988

6-benzyl-2,6-diazaspiro[4.5]decane

$$$$ Data

M. F.

C15H22N2

Suppliers	Catalog Number
Key Organics	HG-0710

Database	Data ID
PubChem	71299791

M. W.

230.34858

CAS

1158750-93-6

Similarity

N/A

ID: 112989

(1s,5s)-3,7-bis(propan-2-yl)-3,7-diazabicyclo[3.3.1]nonan-9-one

$$$$ Data

M. F.

C13H24N2O

Suppliers	Catalog Number
Key Organics	KA-0830

Database	Data ID
PubChem	10704378

M. W.

224.34246

CAS

Similarity

N/A

ID: 112990

(1s,5s)-3,7-dibutyl-3,7-diazabicyclo[3.3.1]nonan-9-one

$$$$ Data

M. F.

C15H28N2O

Suppliers	Catalog Number
Key Organics	KA-0846

Database	Data ID
PubChem	10562799

M. W.

252.39562

CAS

Similarity

N/A

ID: 112991

ethyl 2-chloro-2-[2-(4-methoxyphenyl)hydrazin-1-ylidene]acetate

$$$$ Data

M. F.

C11H13ClN2O3

Suppliers	Catalog Number
Key Organics	KE-0041
Bide Pharmatech	BD226875
A&J Pharmtech	AJA-O7674 AJA-O8547

Database	Data ID
PubChem	21829645

M. W.

256.68552

CAS

473927-63-8

Similarity

N/A

ID: 112992

3-(3-bromo-4-hydroxyphenyl)-2-(N-hydroxyimino)propanoic acid

$$$$ Data

M. F.

C9H8BrNO4

Suppliers	Catalog Number
Key Organics	KG-0028

Database	Data ID
PubChem	71300237

M. W.

274.06812

CAS

Similarity

N/A

ID: 112993

(6-chloro-4-methoxypyridin-3-yl)methanol

$$$$ Data

M. F.

C7H8ClNO2

Suppliers	Catalog Number
Key Organics	KG-0700

Database	Data ID
PubChem	71300223

M. W.

173.59692

CAS

Similarity

N/A

ID: 112994

[1-(2-fluorophenyl)-1H-pyrrol-2-yl]methanol

$$$$ Data

M. F.

C11H10FNO

Suppliers	Catalog Number
Key Organics	KG-0701

Database	Data ID
PubChem	15449124

M. W.

191.2016032

CAS

132407-66-0

Similarity

N/A

ID: 112995

5-acetyl-3-iodo-6-methyl-1,2-dihydropyridin-2-one

$$$$ Data

M. F.

C8H8INO2

Suppliers	Catalog Number
Key Organics	KG-0703

Database	Data ID
PubChem	71300224

M. W.

277.05909

CAS

Similarity

N/A

ID: 112996

ethyl 3-cyano-4-phenylpyridine-2-carboxylate

$$$$ Data

M. F.

C15H12N2O2

Suppliers	Catalog Number
Key Organics	KG-0709

Database	Data ID
PubChem	71300225

M. W.

252.26798

CAS

Similarity

N/A

ID: 112997

3-cyano-4-phenylpyridine-2-carboxylic acid

$$$$ Data

M. F.

C13H8N2O2

Suppliers	Catalog Number
Key Organics	KG-0710

Database	Data ID
PubChem	14825888

M. W.

224.21482

CAS

133609-28-6

Similarity

N/A

ID: 112998

6-chloro-4-methoxypyridine-3-carbaldehyde

$$$$ Data

M. F.

C7H6ClNO2

Suppliers	Catalog Number
Key Organics	KG-0711

Database	Data ID
PubChem	71300226

M. W.

171.58104

CAS

Similarity

N/A

ID: 112999

ethyl 5-[(4-methylpiperazin-1-yl)methyl]pyridine-2-carboxylate

$$$$ Data

M. F.

C14H21N3O2

Suppliers	Catalog Number
Key Organics	KG-0712

Database	Data ID
PubChem	71300227

M. W.

263.33544

CAS

Similarity

N/A

ID: 113000

1-(6-chloro-5-iodo-2-methylpyridin-3-yl)ethan-1-one

$$$$ Data

M. F.

C8H7ClINO

Suppliers	Catalog Number
Key Organics	KG-0713

Database	Data ID
PubChem	71300240

M. W.

295.50475

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