酸酐是某含氧酸脱去一分子水或几分子水,所剩下的部分。一般无机酸是一分子的该酸,直接失去一分子的水就形成该酸的酸酐,其酸酐中决定酸性的元素的化合价不变。而有机酸是两分子该酸或多分子该酸通过分子间的脱水反应而形成的。只有含氧酸才有酸酐。无氧酸是没有酸酐的。

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77423-13-3 2,4-Dioxo-2,4-dihydro-1H-benzo[d][1,3]oxazine-6-carboxylic acid 2,4-二氧代-2,4-二氢-1H-苯并[1,3]恶嗪-6-羧酸
BJS270193377423-13-395%
¥1518.001g
63480-11-5 7-Methyl-1H-benzo[d][1,3]oxazine-2,4-dione 7-甲基-1H-苯并[d][1,3]恶嗪-2,4-二酮
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¥1478.005g
67765-42-8 5-Methoxy-1H-benzo[d][1,3]oxazine-2,4-dione 5-甲氧基-1H-苯并[d][1,3]恶嗪-2,4-二酮
BJS284386367765-42-898%
¥2904.005g
20197-92-6 6,7-Dimethoxy-1H-benzo[d][1,3]oxazine-2,4-dione 6,7-二甲氧基-2H-苯并[d] [1,3]恶嗪-2,4(1H)-二酮
BJS427946020197-92-697%
¥65.00250mg
77603-45-3 5-Bromo-1H-benzo[d][1,3]oxazine-2,4-dione 5-溴-1H-苯并[d][1,3]恶嗪-2,4-二酮
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¥1044.0025g
63480-10-4 7-Nitro-1H-benzo[d][1,3]oxazine-2,4-dione 7-硝基-1H-苯并[d][1,3]恶嗪-2,4-二酮
BJS421081263480-10-495%
¥212.005g
124346-74-3 5,6,7-Trimethoxy-1H-benzo[d][1,3]oxazine-2,4-dione 5,6,7-三甲氧基-1H-苯并[d][1,3]恶嗪-2,4-二酮
BJS3017620124346-74-395%
¥4074.001g
40707-01-5 5-Chloro-1-methyl-1H-benzo[d][1,3]oxazine-2,4-dione 5-氯-1-甲基-1H-苯并[d][1,3]恶嗪-2,4-二酮
BJS128980140707-01-597%
¥4360.0010g
20829-97-4 5-Nitro-1H-benzo[d][1,3]oxazine-2,4-dione 5-硝基-1H-苯并[d][1,3]恶嗪-2,4-二酮
BJS133076320829-97-495%
¥874.001g
20829-96-3 5-Chloro-1H-benzo[d][1,3]oxazine-2,4-dione 5-氯-1H-苯并[d][1,3]噁嗪-2,4-二酮
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¥187.00250mg
97928-01-3 7-(Trifluoromethyl)-1H-benzo[d][1,3]oxazine-2,4-dione 7-(三氟甲基)-1H-苯并[d][1,3]恶嗪-2,4-二酮
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¥4990.005g
78755-94-9 5-Fluoro-1H-benzo[d][1,3]oxazine-2,4-dione 5-氟-1H-苯并[d][1,3]恶嗪-2,4-二酮
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¥235.00250mg
321-50-6 7-Fluoro-1H-benzo[d][1,3]oxazine-2,4-dione 7-氟-2H-3,1-苯并噁嗪-2,4-二酮
BJS5423381321-50-697%
¥155.001g
40928-13-0 7-Chloro-1H-benzo[d][1,3]oxazine-2,4-dione 7-氯-1H-苯并[d][1,3]噁嗪-2,4-二酮
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¥168.005g
116027-10-2 6-Iodo-1H-benzo[d][1,3]oxazine-2,4-dione 6-碘-1H-苯并[d][1,3]恶嗪-2,4-二酮
BJS7783460116027-10-295%
¥246.00100mg
331646-98-1 8-Bromo-1H-benzo[d][1,3]oxazine-2,4-dione 8-溴-1H-苯并[d] [1,3]恶嗪-2,4-二酮
BJS9301084331646-98-197%
¥422.001g
174463-53-7 8-Fluoro-1H-benzo[d][1,3]oxazine-2,4-dione 8-氟-1H-苯并[d][1,3]恶嗪-2,4-二酮
BJS2426975174463-53-797%
¥949.001g
4692-99-3 6-Methyl-1H-benzo[d][1,3]oxazine-2,4-dione 6-甲基-2H-苯并[d][1,3]恶嗪-2,4(1H)-二酮
BJS07737594692-99-396%
¥160.001g
20877-81-0 5-Methyl-2H-benzo[d][1,3]oxazine-2,4(1H)-dione 5-甲基-2H-苯并[d][1,3]恶嗪-2,4(1H)-二酮
BJS671160120877-81-097%
¥229.00100mg
66176-17-8 8-Methyl-1H-benzo[d][1,3]oxazine-2,4-dione 8-甲基-1H-苯并[d][1,3]恶嗪-2,4-二酮
BJS217272466176-17-898%
¥57.00100mg
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