77168-87-7

5-chloro-6-methyl-2-pyrazinecarboxylic acid 1-oxide

77168-88-8

5-methyl-4-oxido-6-oxo-1H-pyrazin-4-ium-3-carboxylic acid

77168-86-6

methyl 5-chloro-6-methyl-2-pyrazinecarboxylate 1-oxide

77168-88-8

5-methyl-4-oxido-6-oxo-1H-pyrazin-4-ium-3-carboxylic acid

77168-84-4

6-甲基-5-氧代-4,5-二氢吡嗪-2-羧酸甲酯

77168-88-8

5-methyl-4-oxido-6-oxo-1H-pyrazin-4-ium-3-carboxylic acid

77168-85-5

5-氯-6-甲基吡嗪-2-羧酸甲酯

77168-88-8

5-methyl-4-oxido-6-oxo-1H-pyrazin-4-ium-3-carboxylic acid

77168-83-3

4,5-二氢-6-甲基-5-氧代-2-吡嗪甲酸

77168-88-8

5-methyl-4-oxido-6-oxo-1H-pyrazin-4-ium-3-carboxylic acid

77168-82-2

4,5-dihydro-6-methyl-5-oxo-2-pyrazinecarboxamide

77168-88-8

5-methyl-4-oxido-6-oxo-1H-pyrazin-4-ium-3-carboxylic acid

77168-81-1

3-carbamoyl-1,6-dihydro-5-methyl-6-oxo-2-pyrazinecarboxylic acid

77168-88-8

5-methyl-4-oxido-6-oxo-1H-pyrazin-4-ium-3-carboxylic acid

57005-61-5

5-甲基-6-氧代-1,6-二氢吡嗪-2,3-二甲腈

77168-88-8

5-methyl-4-oxido-6-oxo-1H-pyrazin-4-ium-3-carboxylic acid