ID: 268951

1-(benzyloxy)-4-(bromomethyl)benzene			$$$$ Data
M. F.	C14H13BrO	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number Enamine EN300-66239 Database Data ID PubChem 10492756
M. W.	277.15642
CAS
Similarity	N/A

ID: 268952

5-azidoisoquinoline			$$$$ Data
M. F.	C9H6N4	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number Enamine EN300-66240 Database Data ID PubChem 12887847
M. W.	170.17074
CAS
Similarity	N/A

ID: 268953

5-chloro-3-(3,4-dimethoxyphenyl)-1,2,4-oxadiazole			$$$$ Data
M. F.	C10H9ClN2O3	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number Enamine EN300-66241 Database Data ID PubChem 50989205
M. W.	240.64306
CAS
Similarity	N/A

ID: 268954

3-cyclohexyl-1H-pyrazole-4-carboxylic acid			$$$$ Data
M. F.	C10H14N2O2	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number ChemBridge 4012183 Enamine EN300-66242 Database Data ID PubChem 12140389
M. W.	194.23036
CAS	874908-44-8
Similarity	N/A

ID: 268955

6,7-dichloro-2,3-dihydro-1-benzofuran-3-one			$$$$ Data
M. F.	C8H4Cl2O2	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number Enamine EN300-66243 Database Data ID PubChem 43511759
M. W.	203.02216
CAS
Similarity	N/A

ID: 268956

3-[(4-methoxyphenyl)methoxy]propan-1-amine			$$$$ Data
M. F.	C11H17NO2	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number Enamine EN300-66244 Database Data ID PubChem 28491061
M. W.	195.25818
CAS
Similarity	N/A

ID: 268957

2-methyl-5-(thiomorpholine-4-carbonyl)aniline			$$$$ Data
M. F.	C12H16N2OS	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number Enamine EN300-66255 Database Data ID PubChem 28786504
M. W.	236.33324
CAS
Similarity	N/A

ID: 268958

2-(4-methylpentanamido)acetic acid			$$$$ Data
M. F.	C8H15NO3	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number Enamine EN300-66256 Database Data ID PubChem 28777652
M. W.	173.2096
CAS
Similarity	N/A

ID: 268959

4-(4-chloro-1H-1,3-benzodiazol-2-yl)aniline			$$$$ Data
M. F.	C13H10ClN3	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number Enamine EN300-66257 Database Data ID PubChem 774877
M. W.	243.6916
CAS
Similarity	N/A

ID: 268960

2-azabicyclo[2.2.2]octane hydrochloride			$$$$ Data
M. F.	C7H14ClN	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number Enamine EN300-66259 Database Data ID PubChem 21984844
M. W.	147.64576
CAS
Similarity	N/A

ID: 268961

2-isothiocyanato-N-(propan-2-yl)acetamide			$$$$ Data
M. F.	C6H10N2OS	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number Enamine EN300-66260 Database Data ID PubChem 43567912
M. W.	158.2214
CAS
Similarity	N/A

ID: 268962

3-(4-bromophenoxy)azepan-2-one			$$$$ Data
M. F.	C12H14BrNO2	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number Enamine EN300-66261 Database Data ID PubChem 43185894
M. W.	284.14906
CAS
Similarity	N/A

ID: 268963

2-[2-(trifluoromethyl)phenyl]piperidine			$$$$ Data
M. F.	C12H14F3N	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number Enamine EN300-66262 Database Data ID PubChem 3384467
M. W.	229.2414696
CAS
Similarity	N/A

ID: 268964

5-fluoro-2-(propan-2-yloxy)aniline			$$$$ Data
M. F.	C9H12FNO	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number Enamine EN300-66264 Database Data ID PubChem 28412261
M. W.	169.1960832
CAS
Similarity	N/A

ID: 268965

3-[(2-methylprop-2-en-1-yl)oxy]aniline			$$$$ Data
M. F.	C10H13NO	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number ChemBridge 4023581 Enamine EN300-66265 Database Data ID PubChem 16641308
M. W.	163.21632
CAS	107268-37-1
Similarity	N/A

ID: 268966

6-[4-(2-hydroxyethyl)piperazine-1-carbonyl]-2-methyl-2,3-dihydropyridazin-3-one			$$$$ Data
M. F.	C12H18N4O3	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number Enamine EN300-66267 Database Data ID PubChem 43390944
M. W.	266.29632
CAS
Similarity	N/A

ID: 268967

3-[(4-methoxyphenyl)methoxy]propanenitrile			$$$$ Data
M. F.	C11H13NO2	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number Enamine EN300-66268 Database Data ID PubChem 28491048
M. W.	191.22642
CAS
Similarity	N/A

ID: 268968

2,3-difluoro-5-nitrobenzene-1-sulfonyl chloride			$$$$ Data
M. F.	C6H2ClF2NO4S	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number Enamine EN300-66271 Database Data ID PubChem 43455750
M. W.	257.5991864
CAS
Similarity	N/A

ID: 268969

(1R)-1-(5-chloro-2,4-dimethoxyphenyl)ethan-1-ol			$$$$ Data
M. F.	C10H13ClO3	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number Enamine EN300-66274 Database Data ID PubChem 25324351
M. W.	216.66142
CAS
Similarity	N/A

ID: 268970

3-chloro-1-methyl-1,2-dihydropyrazin-2-one			$$$$ Data
M. F.	C5H5ClN2O	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number Enamine EN300-66276 Database Data ID PubChem 54592565
M. W.	144.559
CAS
Similarity	N/A

ID: 268971

3-chloro-1-ethyl-1,2-dihydropyrazin-2-one			$$$$ Data
M. F.	C6H7ClN2O	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number Enamine EN300-66277 Database Data ID PubChem 20526161
M. W.	158.58558
CAS
Similarity	N/A

ID: 268972

3-chloro-1-cyclopropyl-1,2-dihydropyrazin-2-one			$$$$ Data
M. F.	C7H7ClN2O	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number Enamine EN300-66280 Database Data ID PubChem 71758732
M. W.	170.59628
CAS
Similarity	N/A

ID: 268973

3-chloro-1-(2-methylpropyl)-1,2-dihydropyrazin-2-one			$$$$ Data
M. F.	C8H11ClN2O	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number Enamine EN300-66282 Database Data ID PubChem 71758733
M. W.	186.63874
CAS
Similarity	N/A

ID: 268974

3-{[1,2,4]triazolo[4,3-a]pyridin-3-yl}piperidine hydrochloride			$$$$ Data
M. F.	C11H15ClN4	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number Enamine EN300-66286 Database Data ID PubChem 54592566
M. W.	238.7166
CAS
Similarity	N/A

ID: 268975

2-[(carbamoylmethyl)amino]acetamide			$$$$ Data
M. F.	C4H9N3O2	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number Enamine EN300-66290 Database Data ID PubChem 5051771
M. W.	131.13316
CAS
Similarity	N/A

ID: 268976

3-chloro-4-(1H-pyrazol-1-yl)aniline			$$$$ Data
M. F.	C9H8ClN3	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number Enamine EN300-66291 Database Data ID PubChem 16772207
M. W.	193.63292
CAS
Similarity	N/A

ID: 268977

N-(piperidin-3-yl)benzamide			$$$$ Data
M. F.	C12H16N2O	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number Enamine EN300-66294 Database Data ID PubChem 22017045
M. W.	204.26824
CAS
Similarity	N/A

ID: 268978

2,2-dimethyl-N-(piperidin-3-yl)propanamide			$$$$ Data
M. F.	C10H20N2O	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number Enamine EN300-66295 Database Data ID PubChem 20118684
M. W.	184.2786
CAS
Similarity	N/A

ID: 268979

methyl 5-chloro-6-formyl-1-methyl-1H-pyrrolo[3,2-b]pyridine-2-carboxylate			$$$$ Data
M. F.	C11H9ClN2O3	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number Enamine EN300-66300 Database Data ID PubChem 50989124
M. W.	252.65376
CAS
Similarity	N/A

ID: 268980

methyl 5-chloro-1-methyl-1H-pyrrolo[3,2-b]pyridine-2-carboxylate			$$$$ Data
M. F.	C10H9ClN2O2	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number Enamine EN300-66301 Database Data ID PubChem 50989127
M. W.	224.64366
CAS
Similarity	N/A

ID: 268981

4-azidopyridine-2-carboxamide			$$$$ Data
M. F.	C6H5N5O	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number Enamine EN300-66302 Database Data ID PubChem 50989589
M. W.	163.1368
CAS
Similarity	N/A

ID: 268982

N-ethyl-2-methylcyclohexan-1-amine hydrochloride			$$$$ Data
M. F.	C9H20ClN	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number Enamine EN300-66303 Database Data ID PubChem 50988234
M. W.	177.7148
CAS
Similarity	N/A

ID: 268983

4-chloro-6,7-diethoxyquinoline			$$$$ Data
M. F.	C13H14ClNO2	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number Enamine EN300-66304 Database Data ID PubChem 43531935
M. W.	251.70876
CAS
Similarity	N/A

ID: 268984

1H-indazole-6-carboxamide			$$$$ Data
M. F.	C8H7N3O	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number Enamine EN300-66307 Bide Pharmatech BD241296 Database Data ID PubChem 22360481
M. W.	161.16068
CAS	906000-44-0
Similarity	N/A

ID: 268985

7-chloro-2,3-dihydro-1,4-benzodioxine-6-thiol			$$$$ Data
M. F.	C8H7ClO2S	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number Enamine EN300-66309 Database Data ID PubChem 43152802
M. W.	202.65798
CAS
Similarity	N/A

ID: 268986

6-(cyclopropylmethoxy)pyridine-3-carboxylic acid			$$$$ Data
M. F.	C10H11NO3	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number Enamine EN300-66310 Database Data ID PubChem 25116526
M. W.	193.19924
CAS
Similarity	N/A

ID: 268987

2-methyl-4-phenylbutan-2-amine hydrochloride			$$$$ Data
M. F.	C11H18ClN	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number Enamine EN300-66311 Database Data ID PubChem 50988073
M. W.	199.72032
CAS
Similarity	N/A

ID: 268988

methyl N-(2-bromo-4-methylphenyl)carbamate			$$$$ Data
M. F.	C9H10BrNO2	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number Enamine EN300-66312 Database Data ID PubChem 896685
M. W.	244.0852
CAS
Similarity	N/A

ID: 268989

5-(3-methylbutyl)-1,3,4-oxadiazol-2-amine			$$$$ Data
M. F.	C7H13N3O	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number Enamine EN300-66314 Database Data ID PubChem 28780018
M. W.	155.19762
CAS
Similarity	N/A

ID: 268990

5-(2,4,4-trimethylpentyl)-1,3,4-oxadiazol-2-amine			$$$$ Data
M. F.	C10H19N3O	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number Enamine EN300-66315 Database Data ID PubChem 43138763
M. W.	197.27736
CAS
Similarity	N/A

ID: 268991

2-(benzylsulfanyl)-3-methylbutanoic acid			$$$$ Data
M. F.	C12H16O2S	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number Enamine EN300-66316 Database Data ID PubChem 18072176
M. W.	224.31924
CAS
Similarity	N/A

ID: 268992

benzyl(methyl)(piperidin-4-ylmethyl)amine			$$$$ Data
M. F.	C14H22N2	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number Enamine EN300-66319 Database Data ID PubChem 16767918
M. W.	218.33788
CAS
Similarity	N/A

ID: 268993

(3-chloro-4-methoxyphenyl)thiourea			$$$$ Data
M. F.	C8H9ClN2OS	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number Enamine EN300-66323 Database Data ID PubChem 15920526
M. W.	216.68786
CAS
Similarity	N/A

ID: 268994

(2,5-diethoxyphenyl)thiourea			$$$$ Data
M. F.	C11H16N2O2S	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number Enamine EN300-66326 Database Data ID PubChem 43113930
M. W.	240.32194
CAS
Similarity	N/A

ID: 268995

3-amino-1-(2,5-diethoxyphenyl)thiourea			$$$$ Data
M. F.	C11H17N3O2S	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number Enamine EN300-66327 Database Data ID PubChem 21858988
M. W.	255.33658
CAS
Similarity	N/A

ID: 268996

2-[(4-methylpiperazin-1-yl)sulfonyl]acetic acid hydrochloride			$$$$ Data
M. F.	C7H15ClN2O4S	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number Enamine EN300-66333 Database Data ID PubChem 50988500
M. W.	258.723
CAS
Similarity	N/A

ID: 268997

2,5-dimethyl-N-(piperidin-4-yl)furan-3-carboxamide			$$$$ Data
M. F.	C12H18N2O2	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number Enamine EN300-66335 Database Data ID PubChem 16794486
M. W.	222.28352
CAS
Similarity	N/A

ID: 268998

2-(4-chlorophenyl)-1-cyclohexylethan-1-amine			$$$$ Data
M. F.	C14H20ClN	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number Enamine EN300-66336 Database Data ID PubChem 50989610
M. W.	237.7683
CAS
Similarity	N/A

ID: 268999

N-(4-aminophenyl)-2-(azocan-1-yl)acetamide			$$$$ Data
M. F.	C15H23N3O	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number Enamine EN300-66337 Database Data ID PubChem 28799977
M. W.	261.36262
CAS
Similarity	N/A

ID: 269000

3-butanoyl-1,3-thiazolidine-4-carboxylic acid			$$$$ Data
M. F.	C8H13NO3S	Custom Synthesis Information This compound is available through custom synthesis, please feel free to contact us for a quote. Email: info@chembase.cn Suppliers Catalog Number Enamine EN300-66340 Database Data ID PubChem 17978710
M. W.	203.25872
CAS
Similarity	N/A

• ID:268951

  

  1-(benzyloxy)-4-(bromomethyl)benzene

• ID:268952

  

  5-azidoisoquinoline

• ID:268953

  

  5-chloro-3-(3,4-dimethoxyphenyl)-1,2,4-oxadiazole

• ID:268954

  

  3-cyclohexyl-1H-pyrazole-4-carboxylic acid

• ID:268955

  

  6,7-dichloro-2,3-dihydro-1-benzofuran-3-one

• ID:268956

  

  3-[(4-methoxyphenyl)methoxy]propan-1-amine

• ID:268957

  

  2-methyl-5-(thiomorpholine-4-carbonyl)aniline

• ID:268958

  

  2-(4-methylpentanamido)acetic acid

• ID:268959

  

  4-(4-chloro-1H-1,3-benzodiazol-2-yl)aniline

• ID:268960

  

  2-azabicyclo[2.2.2]octane hydrochloride

• ID:268961

  

  2-isothiocyanato-N-(propan-2-yl)acetamide

• ID:268962

  

  3-(4-bromophenoxy)azepan-2-one

• ID:268963

  

  2-[2-(trifluoromethyl)phenyl]piperidine

• ID:268964

  

  5-fluoro-2-(propan-2-yloxy)aniline

• ID:268965

  

  3-[(2-methylprop-2-en-1-yl)oxy]aniline

• ID:268966

  

  6-[4-(2-hydroxyethyl)piperazine-1-carbonyl]-2-methyl-2,3-dihydropyridazin-3-one

• ID:268967

  

  3-[(4-methoxyphenyl)methoxy]propanenitrile

• ID:268968

  

  2,3-difluoro-5-nitrobenzene-1-sulfonyl chloride

• ID:268969

  

  (1R)-1-(5-chloro-2,4-dimethoxyphenyl)ethan-1-ol

• ID:268970

  

  3-chloro-1-methyl-1,2-dihydropyrazin-2-one

• ID:268971

  

  3-chloro-1-ethyl-1,2-dihydropyrazin-2-one

• ID:268972

  

  3-chloro-1-cyclopropyl-1,2-dihydropyrazin-2-one

• ID:268973

  

  3-chloro-1-(2-methylpropyl)-1,2-dihydropyrazin-2-one

• ID:268974

  

  3-{[1,2,4]triazolo[4,3-a]pyridin-3-yl}piperidine hydrochloride

• ID:268975

  

  2-[(carbamoylmethyl)amino]acetamide

• ID:268976

  

  3-chloro-4-(1H-pyrazol-1-yl)aniline

• ID:268977

  

  N-(piperidin-3-yl)benzamide

• ID:268978

  

  2,2-dimethyl-N-(piperidin-3-yl)propanamide

• ID:268979

  

  methyl 5-chloro-6-formyl-1-methyl-1H-pyrrolo[3,2-b]pyridine-2-carboxylate

• ID:268980

  

  methyl 5-chloro-1-methyl-1H-pyrrolo[3,2-b]pyridine-2-carboxylate

• ID:268981

  

  4-azidopyridine-2-carboxamide

• ID:268982

  

  N-ethyl-2-methylcyclohexan-1-amine hydrochloride

• ID:268983

  

  4-chloro-6,7-diethoxyquinoline

• ID:268984

  

  1H-indazole-6-carboxamide

• ID:268985

  

  7-chloro-2,3-dihydro-1,4-benzodioxine-6-thiol

• ID:268986

  

  6-(cyclopropylmethoxy)pyridine-3-carboxylic acid

• ID:268987

  

  2-methyl-4-phenylbutan-2-amine hydrochloride

• ID:268988

  

  methyl N-(2-bromo-4-methylphenyl)carbamate

• ID:268989

  

  5-(3-methylbutyl)-1,3,4-oxadiazol-2-amine

• ID:268990

  

  5-(2,4,4-trimethylpentyl)-1,3,4-oxadiazol-2-amine

• ID:268991

  

  2-(benzylsulfanyl)-3-methylbutanoic acid

• ID:268992

  

  benzyl(methyl)(piperidin-4-ylmethyl)amine

• ID:268993

  

  (3-chloro-4-methoxyphenyl)thiourea

• ID:268994

  

  (2,5-diethoxyphenyl)thiourea

• ID:268995

  

  3-amino-1-(2,5-diethoxyphenyl)thiourea

• ID:268996

  

  2-[(4-methylpiperazin-1-yl)sulfonyl]acetic acid hydrochloride

• ID:268997

  

  2,5-dimethyl-N-(piperidin-4-yl)furan-3-carboxamide

• ID:268998

  

  2-(4-chlorophenyl)-1-cyclohexylethan-1-amine

• ID:268999

  

  N-(4-aminophenyl)-2-(azocan-1-yl)acetamide

• ID:269000

  

  3-butanoyl-1,3-thiazolidine-4-carboxylic acid