| 140914-89-2 | 2-PYRAZINE ACETIC ACID | 2-PYRAZINE ACETIC ACID | 
| 49633-80-9 | Pyrazino[1,2-a]azepine, decahydro- (9CI) | Pyrazino[1,2-a]azepine, decahydro- (9CI) | 
| 39455-90-8 | ピラゾロン | PYRAZOLONE | 
| 508241-14-3 | (9AR)-オクタヒドロピラジノ[2,1-C][1,4]オキサジン | Pyrazino[2,1-c][1,4]oxazine, octahydro-, (9aR)- (9CI) | 
| 726198-30-7 | Pyrazinecarboxamide, N-[2-(1-methylpropyl)phenyl]- (9CI) | Pyrazinecarboxamide, N-[2-(1-methylpropyl)phenyl]- (9CI) | 
|  | Pyrazine 2-3,Dicarboxylic acid(intermediates for Zupicolone) | Pyrazine 2-3,Dicarboxylic acid(intermediates for Zupicolone) | 
|  | 3-[2-(PYRAZIN-2-YL)-1-[4-(TRIFLUOROMETHYL)PHENYL]ETHOXY]PROPANOYLMORPHOLINE | 3-[2-(PYRAZIN-2-YL)-1-[4-(TRIFLUOROMETHYL)PHENYL]ETHOXY]PROPANOYLMORPHOLINE | 
| 874792-15-1 | 4-(2-ピラジニル)-2-ピリミジンアミン | 4-(2-PYRAZINYL)-2-PYRIMIDINAMINE | 
| 174089-29-3 | Pyrazolidine, 1-(aminoacetyl)- (9CI) | Pyrazolidine, 1-(aminoacetyl)- (9CI) | 
| 474432-58-1 | Pyrazolo[1,5-a]pyridine-4-carboxaldehyde (9CI) | Pyrazolo[1,5-a]pyridine-4-carboxaldehyde (9CI) | 
| 130947-37-4 | Pyrazino[1,2-d][1,4]diazepine-1,9(2H,6H)-dione, hexahydro- (9CI) | Pyrazino[1,2-d][1,4]diazepine-1,9(2H,6H)-dione, hexahydro- (9CI) | 
| 58219-30-0 | Pyrazinamine, 1,2-dihydro-3-methoxy-1-methyl- (9CI) | Pyrazinamine, 1,2-dihydro-3-methoxy-1-methyl- (9CI) | 
| 13481-00-0 | 2-(2-ピラジニル)マロンジアルデヒド | 2-(2-PYRAZINYL)MALONDIALDEHYDE | 
| 118543-96-7 | Pyrazinecarboxylic acid, 5-acetyl- (9CI) | Pyrazinecarboxylic acid, 5-acetyl- (9CI) | 
| 606116-31-8 | Pyrazolo[1,5-a]pyrimidine-6-propanoic acid, 7-hydroxy-2-(3-methoxyphenyl)-5-methyl-, ethyl ester (9CI) | Pyrazolo[1,5-a]pyrimidine-6-propanoic acid, 7-hydroxy-2-(3-methoxyphenyl)-5-methyl-, ethyl ester (9CI) | 
| 565227-08-9 | Pyrazino[1,2-a]indole, 8-fluoro-1,2,3,4-tetrahydro- (9CI) | Pyrazino[1,2-a]indole, 8-fluoro-1,2,3,4-tetrahydro- (9CI) | 
|  | PYRAZINE-2,5-DICARBOXYLIC ACID 2-CYANOMETHYL ESTER 5-METHYL ESTER | PYRAZINE-2,5-DICARBOXYLIC ACID 2-CYANOMETHYL ESTER 5-METHYL ESTER | 
|  | 5-(PYRAZIN-2-YL)-2-(PYRIDIN-2-YL)-4-(PYRIDIN-4-YL)PYRIMIDINE | 5-(PYRAZIN-2-YL)-2-(PYRIDIN-2-YL)-4-(PYRIDIN-4-YL)PYRIMIDINE | 
|  | 4-[5-(PYRAZIN-2-YL)-4-(PYRIDIN-4-YL)PYRIMIDIN-2-YL]PHENOL | 4-[5-(PYRAZIN-2-YL)-4-(PYRIDIN-4-YL)PYRIMIDIN-2-YL]PHENOL | 
| 120992-56-5 | Pyrazinoic acid, 3,4-dihydro-4-methyl-3-oxo- (6CI) | Pyrazinoic acid, 3,4-dihydro-4-methyl-3-oxo- (6CI) | 
|  | 3-[3-(PYRAZIN-2-YL)-1,2,4-OXADIAZOL-5-YL]-N-(3-(TRIFLUOROMETHYL)BENZYL)PROPANAMIDE | 3-[3-(PYRAZIN-2-YL)-1,2,4-OXADIAZOL-5-YL]-N-(3-(TRIFLUOROMETHYL)BENZYL)PROPANAMIDE | 
|  | 3-PYRAZOL-1-YL-BENZYLAMINE, MALONIC ACID | 3-PYRAZOL-1-YL-BENZYLAMINE, MALONIC ACID | 
| 21230-43-3 | 3-アミノ-1-メチル-1H-ピラゾール-4-カルボン酸エチル | PYRAZOLE-4-CARBOXYLIC ACID, 3-AMINO-1-METHYL-, ETHYL ESTER | 
| 625459-46-3 | Pyrazinecarboxamide, 3-amino-N-cyclopropyl-6-phenyl- (9CI) | Pyrazinecarboxamide, 3-amino-N-cyclopropyl-6-phenyl- (9CI) | 
| 781607-51-0 | Pyrazinecarboxamide, N-[cis-4-amino-4-(hydroxymethyl)cyclohexyl]- (9CI) | Pyrazinecarboxamide, N-[cis-4-amino-4-(hydroxymethyl)cyclohexyl]- (9CI) | 
| 606116-29-4 | Pyrazolo[5,1-b]quinazolin-9-ol, 5,6,7,8-tetrahydro-2-(3-methoxyphenyl)- (9CI) | Pyrazolo[5,1-b]quinazolin-9-ol, 5,6,7,8-tetrahydro-2-(3-methoxyphenyl)- (9CI) | 
| 340961-91-3 | Pyrazolo[1,5-a]pyridine-3,5-diamine (9CI) | Pyrazolo[1,5-a]pyridine-3,5-diamine (9CI) | 
| 606116-42-1 | Pyrazolo[1,5-a]pyrimidin-7-ol, 2-(3,4-dimethoxyphenyl)-5-phenyl- (9CI) | Pyrazolo[1,5-a]pyrimidin-7-ol, 2-(3,4-dimethoxyphenyl)-5-phenyl- (9CI) | 
|  | PYRAZINE-2-CARBOXIMIDOHYDRAZIDE, TECH | PYRAZINE-2-CARBOXIMIDOHYDRAZIDE, TECH | 
| 19762-23-3 | Pyrazole-3-carboxylic acid, 5-ethynyl-1-methyl-, methyl ester (8CI) | Pyrazole-3-carboxylic acid, 5-ethynyl-1-methyl-, methyl ester (8CI) | 
| 72788-85-3 | Pyrazinemethanol, 6-amino-, 4-oxide (9CI) | Pyrazinemethanol, 6-amino-, 4-oxide (9CI) | 
| 89418-10-0 | 7-アミノピラゾロ[1,5-A]ピリミジン-5-オール | Pyrazolo[1,5-a]pyrimidin-5(4H)-one, 7-amino- (9CI) | 
| 606132-08-5 | Pyrazinecarboxamide, N-[2-(3-fluorophenyl)ethyl]- (9CI) | Pyrazinecarboxamide, N-[2-(3-fluorophenyl)ethyl]- (9CI) | 
|  | 2-PYRAZINECARBOXAMIDE1-OXIDE | 2-PYRAZINECARBOXAMIDE1-OXIDE | 
| 339029-86-6 | PYRAZOLO[1,5-A]PYRIMIDINE-3,6-DICARBONITRILE | PYRAZOLO[1,5-A]PYRIMIDINE-3,6-DICARBONITRILE | 
| 15986-97-7 | Pyrazine, 2,3-dihydro-5-methyl-6-(2-methylpropyl)- (9CI) | Pyrazine, 2,3-dihydro-5-methyl-6-(2-methylpropyl)- (9CI) | 
|  | ピラゾリネート | Pyrazolate | 
| 213621-60-4 | 3-Pyrazolidinone,4-hydroxy-1,5-dimethyl-,(4R,5S)-(9CI) | 3-Pyrazolidinone,4-hydroxy-1,5-dimethyl-,(4R,5S)-(9CI) | 
| 879072-59-0 | ピラゾロ[1,5-A]ピリミジン-3-カルブアルデヒド | PYRAZOLO[1,5-A]PYRIMIDINE-3-CARBALDEHYDE | 
| 207515-28-4 | 3,5-Pyrazolidinedicarboxylicacid,(3R,5S)-(9CI) | 3,5-Pyrazolidinedicarboxylicacid,(3R,5S)-(9CI) | 
| 303180-11-2 | 3,5-ピラゾールジカルボン酸 一水和物 | 3,5-Pyrazoledicarboxylic acid monohydrate | 
|  | Pyrazosulfuron-ethy | Pyrazosulfuron-ethy | 
|  | 4-[4-(4-(PYRAZIN-2-YL)-1H-PYRAZOL-1-YL)BENZOYL]MORPHOLINE | 4-[4-(4-(PYRAZIN-2-YL)-1H-PYRAZOL-1-YL)BENZOYL]MORPHOLINE | 
|  | PYRAZOL FAST YELLOW 2GLL | PYRAZOL FAST YELLOW 2GLL | 
| 875-56-9 | Pyrazole-3-carbonitrile, 5-acetyl-4-methyl- (8CI) | Pyrazole-3-carbonitrile, 5-acetyl-4-methyl- (8CI) | 
| 478341-98-9 | Pyrazinecarboxamide, N-[2-(cyclohexylamino)-1-(1,3-dimethyl-1H-pyrazol-4-yl)-2-oxoethyl]-N-(4-phenoxyphenyl)- (9CI) | Pyrazinecarboxamide, N-[2-(cyclohexylamino)-1-(1,3-dimethyl-1H-pyrazol-4-yl)-2-oxoethyl]-N-(4-phenoxyphenyl)- (9CI) | 
| 355836-17-8 | Pyrazinamine, N-(1-ethylpropyl)-6-methyl- (9CI) | Pyrazinamine, N-(1-ethylpropyl)-6-methyl- (9CI) | 
|  | 2-PYRAZIN-2-YLETHANAMINE | 2-PYRAZIN-2-YLETHANAMINE | 
| 352661-83-7 | PYRAZOLO[1,5-A]PYRIDINE-7-CARBOXALDEHYDE | PYRAZOLO[1,5-A]PYRIDINE-7-CARBOXALDEHYDE | 
| 73972-68-6 | 4-[(2,3-ジヒドロ-1,5-ジメチル-3-オキソ-2-フェニル-1H-ピラゾール-4-イル)アミノメチレン]-1,2-ジフェニル-3,5-ピラゾリジンジオン | 3,5-Pyrazolidinedione, 4-((2,3-dimethyl-3-oxo-1-phenyl-4-pyrazolinyl)a minomethylene)-1,2-diphenyl- | 
| 606096-62-2 | Pyrazolo[1,5-a]pyrimidine-2-carboxamide, 5-cyclopropyl-N-(5-methyl-1,3,4-thiadiazol-2-yl)-7-(trifluoromethyl)- (9CI) | Pyrazolo[1,5-a]pyrimidine-2-carboxamide, 5-cyclopropyl-N-(5-methyl-1,3,4-thiadiazol-2-yl)-7-(trifluoromethyl)- (9CI) | 
| 89-01-0 | 2,3-ピラジンジカルボン酸 | 2,3-Pyrazinedicarboxylic acid | 
|  | PYRAZOL FAST TURQUOISE FBLN | PYRAZOL FAST TURQUOISE FBLN | 
| 603097-50-3 | Pyrazolo[1,5-a]pyrimidine-2-carboxamide, N-(2,5-dimethylphenyl)-5-(1-methylethyl)-7-(trifluoromethyl)- (9CI) | Pyrazolo[1,5-a]pyrimidine-2-carboxamide, N-(2,5-dimethylphenyl)-5-(1-methylethyl)-7-(trifluoromethyl)- (9CI) | 
| 72648-18-1 | Pyrazine, 2,3-dihydro-5,6-dimethyl-2-(1-methylethyl)- (9CI) | Pyrazine, 2,3-dihydro-5,6-dimethyl-2-(1-methylethyl)- (9CI) | 
| 96319-39-0 | Pyrazolo[1,5-a]pyrimidine-3-carbonyl chloride, 2-methyl- (9CI) | Pyrazolo[1,5-a]pyrimidine-3-carbonyl chloride, 2-methyl- (9CI) | 
| 88394-06-3 | Pyrazinecarboxamide, 3,4-dihydro-6-methyl-3-oxo- (9CI) | Pyrazinecarboxamide, 3,4-dihydro-6-methyl-3-oxo- (9CI) | 
| 40790-19-0 | Pyrazine, 2,6-dimethyl-3-(1-methylethyl)- (9CI) | Pyrazine, 2,6-dimethyl-3-(1-methylethyl)- (9CI) | 
| 222048-85-3 | Pyrazine, 2,6-bis(1-methylethyl)- (9CI) | Pyrazine, 2,6-bis(1-methylethyl)- (9CI) | 
| 340961-95-7 | Pyrazolo[1,5-a]pyridin-5-ol, 3-amino- (9CI) | Pyrazolo[1,5-a]pyridin-5-ol, 3-amino- (9CI) | 
| 37545-39-4 | 5-pyrazinyl-1,3,4-oxadiazole-2-thione | 5-pyrazinyl-1,3,4-oxadiazole-2-thione | 
| 123188-99-8 | 2,3-Pyrazinedicarbonitrile,5-amino-6-(ethylamino)-(9CI) | 2,3-Pyrazinedicarbonitrile,5-amino-6-(ethylamino)-(9CI) | 
| 604778-31-6 | Pyrazinecarboxamide, N-[(7,9-dimethyltetrazolo[1,5-a]quinolin-4-yl)methyl]-N-(2-furanylmethyl)- (9CI) | Pyrazinecarboxamide, N-[(7,9-dimethyltetrazolo[1,5-a]quinolin-4-yl)methyl]-N-(2-furanylmethyl)- (9CI) | 
| 443143-98-4 | Pyrazino[1,2-a][1,4]diazepine (9CI) | Pyrazino[1,2-a][1,4]diazepine (9CI) | 
| 89391-77-5 | Pyrazinesulfonamide, 3-methoxy- (9CI) | Pyrazinesulfonamide, 3-methoxy- (9CI) | 
| 585520-39-4 | Pyrazolo[3,4-b]azepine, 3-(1-ethyl-3-piperidinyl)-1,4,5,6,7,8-hexahydro- (9CI) | Pyrazolo[3,4-b]azepine, 3-(1-ethyl-3-piperidinyl)-1,4,5,6,7,8-hexahydro- (9CI) | 
| 603098-19-7 | Pyrazolo[1,5-a]pyrimidin-7-ol, 2-(2-chlorophenyl)-5-phenyl- (9CI) | Pyrazolo[1,5-a]pyrimidin-7-ol, 2-(2-chlorophenyl)-5-phenyl- (9CI) | 
| 630120-87-5 | Pyrazinecarbonitrile, 3,4-dihydro-3-(1-piperazinyl)- (9CI) | Pyrazinecarbonitrile, 3,4-dihydro-3-(1-piperazinyl)- (9CI) | 
| 17304-62-0 | Pyrazol-5(4H)-one, 1-(2-benzothiazolyl)-3-methyl- | Pyrazol-5(4H)-one, 1-(2-benzothiazolyl)-3-methyl- | 
| 37585-38-9 | 1,2-ジフェニル-3-メトキシ-3-ピラゾリン-5-オン | 3-Pyrazolin-5-one, 1,2-diphenyl-3-methoxy- | 
| 186534-01-0 | Pyrazinecarboxylic acid, trimethyl- (9CI) | Pyrazinecarboxylic acid, trimethyl- (9CI) | 
|  | 3-PYRAZOL-1-YL-PROPIONIC ACID METHYL ESTER | 3-PYRAZOL-1-YL-PROPIONIC ACID METHYL ESTER | 
| 124072-92-0 | 1-Pyrazolidinecarboxamide,N-(1-methylethyl)-(9CI) | 1-Pyrazolidinecarboxamide,N-(1-methylethyl)-(9CI) | 
| 446287-28-1 | 2,3-Pyrazinediamine,N,N,N,N-tetramethyl-(9CI) | 2,3-Pyrazinediamine,N,N,N,N-tetramethyl-(9CI) | 
| 88394-04-1 | Pyrazinecarboxamide, N-(hydroxymethyl)- (7CI,9CI) | Pyrazinecarboxamide, N-(hydroxymethyl)- (7CI,9CI) | 
| 606117-76-4 | Pyrazolo[1,5-a]pyrimidine-2-carboxamide, 5,7-dimethyl-N-(4,5,6,7-tetrahydro-6-methyl-2-benzothiazolyl)- (9CI) | Pyrazolo[1,5-a]pyrimidine-2-carboxamide, 5,7-dimethyl-N-(4,5,6,7-tetrahydro-6-methyl-2-benzothiazolyl)- (9CI) | 
| 213621-65-9 | 3-Pyrazolidinone,4-hydroxy-2,5-dimethyl-,(4R,5S)-(9CI) | 3-Pyrazolidinone,4-hydroxy-2,5-dimethyl-,(4R,5S)-(9CI) | 
| 431071-67-9 | Pyrazineacetic acid, 5-methyl- (9CI) | Pyrazineacetic acid, 5-methyl- (9CI) | 
| 93034-75-4 | Pyrazinamine, 6-methoxy-5-methyl-3-(1-methylethyl)- (9CI) | Pyrazinamine, 6-methoxy-5-methyl-3-(1-methylethyl)- (9CI) | 
| 105138-51-0 | Pyrazino(1,2-a)(1,4)benzodiazepine, 1,2,3,4,4a,5-hexahydro-3-(3-methyl butyl)-7-(2-thienyl)-, dihydrochloride | Pyrazino(1,2-a)(1,4)benzodiazepine, 1,2,3,4,4a,5-hexahydro-3-(3-methyl butyl)-7-(2-thienyl)-, dihydrochloride | 
| 96335-42-1 | Pyrazolo[1,5-a]pyrimidin-7(4H)-one, 5-amino- (9CI) | Pyrazolo[1,5-a]pyrimidin-7(4H)-one, 5-amino- (9CI) | 
| 38028-76-1 | 2-エチル-5-(1-メチルエチル)ピラジン | Pyrazine, 2-ethyl-5-(1-methylethyl)- (9CI) | 
| 99171-21-8 | 2-Pyrazoline-3-carboxamide4-amino-5-oxo-(6CI) | 2-Pyrazoline-3-carboxamide4-amino-5-oxo-(6CI) | 
| 80832-41-3 | Pyrazine, 5-methyl-2,3-dipropyl- (9CI) | Pyrazine, 5-methyl-2,3-dipropyl- (9CI) | 
| 174470-57-6 | 3-Pyrazolidinone,5-(1-methylethyl)-(9CI) | 3-Pyrazolidinone,5-(1-methylethyl)-(9CI) | 
|  | 1-Pyrazol-1-ylmethyl-1H-pyrazole-3-carboxylic acid | 1-Pyrazol-1-ylmethyl-1H-pyrazole-3-carboxylic acid | 
|  | pyrazole anthrone | pyrazole anthrone | 
| 606116-46-5 | Pyrazolo[5,1-b]quinazolin-9-ol, 2-(3,5-dimethoxyphenyl)-5,6,7,8-tetrahydro- (9CI) | Pyrazolo[5,1-b]quinazolin-9-ol, 2-(3,5-dimethoxyphenyl)-5,6,7,8-tetrahydro- (9CI) | 
| 75492-05-6 | Pyrazine, 5-(1-ethylpropyl)-2,3-dimethyl- (9CI) | Pyrazine, 5-(1-ethylpropyl)-2,3-dimethyl- (9CI) | 
| 623565-43-5 | Pyrazolo[5,1-b]thiazole-6-carboxaldehyde, 2,3-dihydro- (9CI) | Pyrazolo[5,1-b]thiazole-6-carboxaldehyde, 2,3-dihydro- (9CI) | 
| 606096-87-1 | Pyrazinecarboxamide, N-(1,3-benzodioxol-5-ylmethyl)-5-methyl- (9CI) | Pyrazinecarboxamide, N-(1,3-benzodioxol-5-ylmethyl)-5-methyl- (9CI) | 
| 221295-08-5 | Pyrazinecarboxaldehyde, 5-(dimethylamino)- (9CI) | Pyrazinecarboxaldehyde, 5-(dimethylamino)- (9CI) | 
|  | 4-pyrazol-1-ylaniline | 4-pyrazol-1-ylaniline | 
| 174089-30-6 | Pyrazolidine, 1-(2-pyrrolidinylcarbonyl)-, (S)- (9CI) | Pyrazolidine, 1-(2-pyrrolidinylcarbonyl)-, (S)- (9CI) | 
| 539826-70-5 | Pyrazine, 2,3-dihydro-2,6-dimethyl-5-pentyl- (9CI) | Pyrazine, 2,3-dihydro-2,6-dimethyl-5-pentyl- (9CI) | 
| 122942-31-8 | Pyrazino[2,3-d]pyridazine-5,8-diamine, 2-methyl- (9CI) | Pyrazino[2,3-d]pyridazine-5,8-diamine, 2-methyl- (9CI) | 
| 33332-49-9 | Pyrazinecarboxamide, 6-amino- (8CI,9CI) | Pyrazinecarboxamide, 6-amino- (8CI,9CI) | 
| 55457-17-5 | 2-メチルピラゾロ[1,5-A][1,3,5]トリアジン-4(3H)-オン | Pyrazolo[1,5-a]-1,3,5-triazin-4(1H)-one, 2-methyl- (9CI) | 
| 581056-85-1 | Pyrazolo[3,4-b]azepine, 3-(2-benzofuranyl)-1-(2-fluorophenyl)-1,4,5,6,7,8-hexahydro- (9CI) | Pyrazolo[3,4-b]azepine, 3-(2-benzofuranyl)-1-(2-fluorophenyl)-1,4,5,6,7,8-hexahydro- (9CI) | 
| 801170-65-0 | Pyrazole, 4-(dimethylamino)-1-o-tolyl- (8CI) | Pyrazole, 4-(dimethylamino)-1-o-tolyl- (8CI) |