Diflunisal is a salicylic acid derivative with analgesic and anti-inflammatory activity. It was developed by Merck Sharp & Dohme in 1971 after showing promise in a research project studying more potent chemical analogs of aspirin. It was first sold under the brand name Dolobid, marketed by Merck & Co., but generic versions are now widely available. It is classed as a non-steroidal anti-inflammatory drug (NSAID) and is available in 250mg and 500mg tablets.

CAS：22494-42-4
中文别名：5-(2,4-二氟苯基)水杨酸;二氟苯水杨酸;氟苯水杨酸;2\',4\'-二氟-4-羟基-[1,1\'-联苯]-3-羧酸;
英文别名：4\',6\'-difluoro-4-hydroxybiphenyl-3-carboxylic acid;5-(2,4-Difluorophenyl)salicylic acid;2-hydroxy-5-(2\',4\'-difluorophenyl)benzoic acid;Dolobis;Dolobid;Flustar;Diflunisalum;5-(2,4-difluorophenyl)-2-hydroxybenzoic acid;Flovacil;Adomal;Fluniget;Fluodonil;2\',4\'-difluoro-4-hydroxy-3-biphenylcarboxylic acid;2\',4\'-difluoro-4-hydroxy-[1,1\'-biphenyl]-3-carboxylic acid;
分子式：C13H8F2O3
分子量：250.198
精确质量：250.044
Psa：57.53
Logp：3.0356

MDL号：MFCD00057834
EINECS号：245-034-9
RTECS号：DV2030000

外观与性状：白色固体
密度：1.437g/cm3
沸点：249 °C (15 mmHg)
熔点：32-36 °C
闪点：33 °C
折射率：1.601
稳定性：Stable at normal temperatures and pressures.
储存条件：Keep tightly closed. Store in a cool dry place.
蒸汽压：2.75E-07mmHg at 25°C

RTECS号：DV2030000
安全说明：S22-S26-S36
危险类别码：R22; R36/37/38; R63
WGK Germany：3
海关编码：2918290000
危险品标志：Xn