摩熵化学
数据库官网
小程序
打开微信扫一扫
首页 分子通 化学资讯 化学百科 反应查询 关于我们
请输入关键词
历史搜索
    热门化合物HOT
    • 喹啉
    • 水杨醛
    • 二溴甲烷
    • 谷胱甘肽
    • L-乳酸
    • 苯巴比妥
    • 辣椒碱
    • 非那明
    • 百草枯
    • 联苯烯
    首页 分子通 字母
    按分子首字母查询
    按分子CAS号查询
    中文名称 英文名称 CAS号 化学式 结构式图片
    —— (6S)-6-N-cyclopentyl-5-ethyl-6-methyl-4-oxo-2-N-(3-propan-2-yloxypropyl)-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide —— C22H35N5O4
    (6S)-6-N-cyclopentyl-5-ethyl-6-methyl-4-oxo-2-N-(3-propan-2-yloxypropyl)-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide
    —— (6S)-2-N-(3-methoxypropyl)-5,6-dimethyl-6-N-[(4-methylphenyl)methyl]-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide —— C22H29N5O4
    (6S)-2-N-(3-methoxypropyl)-5,6-dimethyl-6-N-[(4-methylphenyl)methyl]-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide
    —— (6S)-6-N-cyclopentyl-5-ethyl-2-N-[(2-fluorophenyl)methyl]-6-methyl-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide —— C23H28FN5O3
    (6S)-6-N-cyclopentyl-5-ethyl-2-N-[(2-fluorophenyl)methyl]-6-methyl-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide
    —— (6S)-6-N-cyclopentyl-5-ethyl-2-N-(furan-2-ylmethyl)-6-methyl-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide —— C21H27N5O4
    (6S)-6-N-cyclopentyl-5-ethyl-2-N-(furan-2-ylmethyl)-6-methyl-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide
    —— (6R)-2-N-[2-(cyclohexen-1-yl)ethyl]-5,6-dimethyl-6-N-[(4-methylphenyl)methyl]-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide —— C26H33N5O3
    (6R)-2-N-[2-(cyclohexen-1-yl)ethyl]-5,6-dimethyl-6-N-[(4-methylphenyl)methyl]-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide
    —— (6R)-2-N-[(4-ethoxyphenyl)methyl]-5,6-dimethyl-6-N-[(4-methylphenyl)methyl]-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide —— C27H31N5O4
    (6R)-2-N-[(4-ethoxyphenyl)methyl]-5,6-dimethyl-6-N-[(4-methylphenyl)methyl]-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide
    —— (6S)-6-N-cyclopentyl-5-ethyl-2-N-[(2-methoxyphenyl)methyl]-6-methyl-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide —— C24H31N5O4
    (6S)-6-N-cyclopentyl-5-ethyl-2-N-[(2-methoxyphenyl)methyl]-6-methyl-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide
    —— (6S)-6-N-cyclopentyl-2-N-[(2-ethoxyphenyl)methyl]-5-ethyl-6-methyl-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide —— C25H33N5O4
    (6S)-6-N-cyclopentyl-2-N-[(2-ethoxyphenyl)methyl]-5-ethyl-6-methyl-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide
    —— (6S)-6-N-[(4-fluorophenyl)methyl]-5,6-dimethyl-4-oxo-2-N-(2-piperidin-1-ylethyl)-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide —— C24H31FN6O3
    (6S)-6-N-[(4-fluorophenyl)methyl]-5,6-dimethyl-4-oxo-2-N-(2-piperidin-1-ylethyl)-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide
    —— (6S)-6-N-cyclopentyl-5-ethyl-6-methyl-4-oxo-2-N-(2-pyrrolidin-1-ylethyl)-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide —— C22H34N6O3
    (6S)-6-N-cyclopentyl-5-ethyl-6-methyl-4-oxo-2-N-(2-pyrrolidin-1-ylethyl)-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide
    —— (6R)-2-N-[2-(2-methoxyphenyl)ethyl]-5,6-dimethyl-6-N-[(4-methylphenyl)methyl]-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide —— C27H31N5O4
    (6R)-2-N-[2-(2-methoxyphenyl)ethyl]-5,6-dimethyl-6-N-[(4-methylphenyl)methyl]-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide
    —— (6R)-2-N-[(2,5-dimethoxyphenyl)methyl]-5,6-dimethyl-6-N-[(4-methylphenyl)methyl]-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide —— C27H31N5O5
    (6R)-2-N-[(2,5-dimethoxyphenyl)methyl]-5,6-dimethyl-6-N-[(4-methylphenyl)methyl]-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide
    —— (6S)-5,6-dimethyl-6-N-[(4-methylphenyl)methyl]-2-N-[(4-methylsulfanylphenyl)methyl]-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide —— C26H29N5O3S
    (6S)-5,6-dimethyl-6-N-[(4-methylphenyl)methyl]-2-N-[(4-methylsulfanylphenyl)methyl]-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide
    —— (6S)-N-benzyl-5,6-dimethyl-4-oxo-2-(4-phenylpiperazine-1-carbonyl)-7H-pyrazolo[1,5-a]pyrazine-6-carboxamide —— C27H30N6O3
    (6S)-N-benzyl-5,6-dimethyl-4-oxo-2-(4-phenylpiperazine-1-carbonyl)-7H-pyrazolo[1,5-a]pyrazine-6-carboxamide
    —— (6S)-5,6-dimethyl-2-N-(3-methylbutyl)-6-N-[(4-methylphenyl)methyl]-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide —— C23H31N5O3
    (6S)-5,6-dimethyl-2-N-(3-methylbutyl)-6-N-[(4-methylphenyl)methyl]-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide
    —— (6R)-6-N-cyclopentyl-2-N-(3-ethoxypropyl)-5-ethyl-6-methyl-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide —— C21H33N5O4
    (6R)-6-N-cyclopentyl-2-N-(3-ethoxypropyl)-5-ethyl-6-methyl-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide
    —— (6S)-2-N-cyclohexyl-5,6-dimethyl-6-N-[(4-methylphenyl)methyl]-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide —— C24H31N5O3
    (6S)-2-N-cyclohexyl-5,6-dimethyl-6-N-[(4-methylphenyl)methyl]-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide
    —— (6R)-6-N-cyclopentyl-5-ethyl-2-N-[(3-methoxyphenyl)methyl]-6-methyl-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide —— C24H31N5O4
    (6R)-6-N-cyclopentyl-5-ethyl-2-N-[(3-methoxyphenyl)methyl]-6-methyl-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide
    —— (6R)-5,6-dimethyl-6-N-[(4-methylphenyl)methyl]-4-oxo-2-N-(3-piperidin-1-ylpropyl)-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide —— C26H36N6O3
    (6R)-5,6-dimethyl-6-N-[(4-methylphenyl)methyl]-4-oxo-2-N-(3-piperidin-1-ylpropyl)-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide
    —— (6S)-2-N-[(2,4-dimethoxyphenyl)methyl]-5,6-dimethyl-6-N-[(4-methylphenyl)methyl]-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide —— C27H31N5O5
    (6S)-2-N-[(2,4-dimethoxyphenyl)methyl]-5,6-dimethyl-6-N-[(4-methylphenyl)methyl]-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide
    —— (6R)-2-N-[2-(furan-2-yl)ethyl]-5,6-dimethyl-6-N-[(4-methylphenyl)methyl]-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide —— C24H27N5O4
    (6R)-2-N-[2-(furan-2-yl)ethyl]-5,6-dimethyl-6-N-[(4-methylphenyl)methyl]-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide
    —— (6S)-6-N-cyclopentyl-5-ethyl-6-methyl-4-oxo-2-N-(3-phenylpropyl)-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide —— C25H33N5O3
    (6S)-6-N-cyclopentyl-5-ethyl-6-methyl-4-oxo-2-N-(3-phenylpropyl)-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide
    —— (6S)-5,6-dimethyl-6-N-[(4-methylphenyl)methyl]-4-oxo-2-N-propan-2-yl-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide —— C21H27N5O3
    (6S)-5,6-dimethyl-6-N-[(4-methylphenyl)methyl]-4-oxo-2-N-propan-2-yl-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide
    —— (6R)-2-N-[[4-(dimethylamino)phenyl]methyl]-6-N-[(4-fluorophenyl)methyl]-5,6-dimethyl-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide —— C26H29FN6O3
    (6R)-2-N-[[4-(dimethylamino)phenyl]methyl]-6-N-[(4-fluorophenyl)methyl]-5,6-dimethyl-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide
    —— (6R)-5,6-dimethyl-6-N-[(4-methylphenyl)methyl]-4-oxo-2-N-propan-2-yl-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide —— C21H27N5O3
    (6R)-5,6-dimethyl-6-N-[(4-methylphenyl)methyl]-4-oxo-2-N-propan-2-yl-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide
    —— (6R)-5,6-dimethyl-N-[(4-methylphenyl)methyl]-2-(4-methylpiperazine-1-carbonyl)-4-oxo-7H-pyrazolo[1,5-a]pyrazine-6-carboxamide —— C23H30N6O3
    (6R)-5,6-dimethyl-N-[(4-methylphenyl)methyl]-2-(4-methylpiperazine-1-carbonyl)-4-oxo-7H-pyrazolo[1,5-a]pyrazine-6-carboxamide
    —— (6R)-2-N-butyl-5,6-dimethyl-6-N-[(4-methylphenyl)methyl]-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide —— C22H29N5O3
    (6R)-2-N-butyl-5,6-dimethyl-6-N-[(4-methylphenyl)methyl]-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide
    —— (6S)-2-N-[(4-fluorophenyl)methyl]-5,6-dimethyl-6-N-[(4-methylphenyl)methyl]-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide —— C25H26FN5O3
    (6S)-2-N-[(4-fluorophenyl)methyl]-5,6-dimethyl-6-N-[(4-methylphenyl)methyl]-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide
    —— (6S)-2-N-benzyl-5,6-dimethyl-6-N-[(4-methylphenyl)methyl]-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide —— C25H27N5O3
    (6S)-2-N-benzyl-5,6-dimethyl-6-N-[(4-methylphenyl)methyl]-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide
    —— (6R)-6-N-[(4-fluorophenyl)methyl]-5,6-dimethyl-2-N-[3-(4-methylpiperazin-1-yl)propyl]-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide —— C25H34FN7O3
    (6R)-6-N-[(4-fluorophenyl)methyl]-5,6-dimethyl-2-N-[3-(4-methylpiperazin-1-yl)propyl]-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide
    —— (6R)-6-N-cyclopentyl-5-ethyl-6-methyl-4-oxo-2-N-(thiophen-2-ylmethyl)-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide —— C21H27N5O3S
    (6R)-6-N-cyclopentyl-5-ethyl-6-methyl-4-oxo-2-N-(thiophen-2-ylmethyl)-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide
    —— (6S)-6-N-cyclopentyl-2-N-(3,4-dimethylphenyl)-5-ethyl-6-methyl-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide —— C24H31N5O3
    (6S)-6-N-cyclopentyl-2-N-(3,4-dimethylphenyl)-5-ethyl-6-methyl-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide
    —— (6R)-2-N-(3-methoxypropyl)-5,6-dimethyl-6-N-[(4-methylphenyl)methyl]-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide —— C22H29N5O4
    (6R)-2-N-(3-methoxypropyl)-5,6-dimethyl-6-N-[(4-methylphenyl)methyl]-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide
    —— (6R)-2-N-butyl-6-N-[(4-fluorophenyl)methyl]-5,6-dimethyl-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide —— C21H26FN5O3
    (6R)-2-N-butyl-6-N-[(4-fluorophenyl)methyl]-5,6-dimethyl-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide
    —— 6-(2-hydroxy-3-methoxyphenyl)-8-(4-methylanilino)-2-(4-morpholin-4-ylphenyl)-6a-phenyl-4,6,9a,10,10a,10b-hexahydro-3aH-isoindolo[5,6-e]isoindole-1,3,7,9-tetrone —— C44H42N4O7
    6-(2-hydroxy-3-methoxyphenyl)-8-(4-methylanilino)-2-(4-morpholin-4-ylphenyl)-6a-phenyl-4,6,9a,10,10a,10b-hexahydro-3aH-isoindolo[5,6-e]isoindole-1,3,7,9-tetrone
    —— (6R)-6-N-cyclopentyl-5-ethyl-2-N-(3-ethylphenyl)-6-methyl-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide —— C24H31N5O3
    (6R)-6-N-cyclopentyl-5-ethyl-2-N-(3-ethylphenyl)-6-methyl-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide
    —— (6R)-6-N-cyclopentyl-2-N-(3,5-dimethylphenyl)-5-ethyl-6-methyl-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide —— C24H31N5O3
    (6R)-6-N-cyclopentyl-2-N-(3,5-dimethylphenyl)-5-ethyl-6-methyl-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide
    —— 6-[6a,9a-Dichloro-6-(4-hydroxy-3-iodo-5-methoxyphenyl)-1,3,7,9-tetraoxo-8-(2,3,4,5,6-pentafluorophenyl)-3a,4,6,10,10a,10b-hexahydroisoindolo[5,6-e]isoindol-2-yl]hexanoic acid —— C33H26Cl2F5IN2O8
    6-[6a,9a-Dichloro-6-(4-hydroxy-3-iodo-5-methoxyphenyl)-1,3,7,9-tetraoxo-8-(2,3,4,5,6-pentafluorophenyl)-3a,4,6,10,10a,10b-hexahydroisoindolo[5,6-e]isoindol-2-yl]hexanoic acid
    —— (6R)-5,6-dimethyl-2-N-[2-(3-methylphenyl)ethyl]-6-N-[(4-methylphenyl)methyl]-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide —— C27H31N5O3
    (6R)-5,6-dimethyl-2-N-[2-(3-methylphenyl)ethyl]-6-N-[(4-methylphenyl)methyl]-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide
    —— (6S)-6-N-cyclopentyl-5-ethyl-6-methyl-2-N-(2-methylphenyl)-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide —— C23H29N5O3
    (6S)-6-N-cyclopentyl-5-ethyl-6-methyl-2-N-(2-methylphenyl)-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide
    —— (6R)-5,6-dimethyl-6-N-[(4-methylphenyl)methyl]-2-N-[(4-methylsulfanylphenyl)methyl]-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide —— C26H29N5O3S
    (6R)-5,6-dimethyl-6-N-[(4-methylphenyl)methyl]-2-N-[(4-methylsulfanylphenyl)methyl]-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide
    —— (6R)-2-N-[(2,4-dimethoxyphenyl)methyl]-5,6-dimethyl-6-N-[(4-methylphenyl)methyl]-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide —— C27H31N5O5
    (6R)-2-N-[(2,4-dimethoxyphenyl)methyl]-5,6-dimethyl-6-N-[(4-methylphenyl)methyl]-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide
    —— (6R)-5,6-dimethyl-6-N-[(4-methylphenyl)methyl]-4-oxo-2-N-(2-phenylethyl)-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide —— C26H29N5O3
    (6R)-5,6-dimethyl-6-N-[(4-methylphenyl)methyl]-4-oxo-2-N-(2-phenylethyl)-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide
    —— (6R)-6-N-cyclopentyl-5-ethyl-2-N-(4-fluorophenyl)-6-methyl-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide —— C22H26FN5O3
    (6R)-6-N-cyclopentyl-5-ethyl-2-N-(4-fluorophenyl)-6-methyl-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide
    —— (6S)-6-N-[(4-fluorophenyl)methyl]-5,6-dimethyl-4-oxo-2-N-(3-propylsulfanylpropyl)-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide —— C23H30FN5O3S
    (6S)-6-N-[(4-fluorophenyl)methyl]-5,6-dimethyl-4-oxo-2-N-(3-propylsulfanylpropyl)-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide
    —— (6R)-5,6-dimethyl-2-N-(3-methylbutyl)-6-N-[(4-methylphenyl)methyl]-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide —— C23H31N5O3
    (6R)-5,6-dimethyl-2-N-(3-methylbutyl)-6-N-[(4-methylphenyl)methyl]-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide
    —— (6S)-2-N-cyclohexyl-6-N-[(4-fluorophenyl)methyl]-5,6-dimethyl-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide —— C23H28FN5O3
    (6S)-2-N-cyclohexyl-6-N-[(4-fluorophenyl)methyl]-5,6-dimethyl-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide
    —— (6S)-6-N-cyclopentyl-5-ethyl-2-N-(3-fluorophenyl)-6-methyl-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide —— C22H26FN5O3
    (6S)-6-N-cyclopentyl-5-ethyl-2-N-(3-fluorophenyl)-6-methyl-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide
    —— (6S)-2-N-butyl-5,6-dimethyl-6-N-[(4-methylphenyl)methyl]-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide —— C22H29N5O3
    (6S)-2-N-butyl-5,6-dimethyl-6-N-[(4-methylphenyl)methyl]-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide
    —— (6R)-5,6-dimethyl-N-[(4-methylphenyl)methyl]-2-(morpholine-4-carbonyl)-4-oxo-7H-pyrazolo[1,5-a]pyrazine-6-carboxamide —— C22H27N5O4
    (6R)-5,6-dimethyl-N-[(4-methylphenyl)methyl]-2-(morpholine-4-carbonyl)-4-oxo-7H-pyrazolo[1,5-a]pyrazine-6-carboxamide