甲氧苄啶为合成的广谱抗菌剂，单独用于呼吸道感染、泌尿道感染、肠道感染等病症，可用于治疗敏感菌所致的败血症、脑膜炎、中耳炎、伤寒、志贺菌病（菌痢）等。

名称	CAS号	英文名称	简称	母离子m/z	子离子m/z（a为定量子离子）	内标物
甲氧苄啶	738-70-5	Trimethoprim	TMP	291.1	230.0a/261.1	磺胺甲恶唑-d4

标准曲线

y = 172.23527 x + 9.00435 (r = 0.99648)

本底图谱

Sample Name	Analyte Peak Name	Area (cps)	S/N	Analyte RT(min)	Target conc. ()	Calculated Concentration (ng/mL)
1	TMP_1	1.579e5	410.8	3.79	N/A	< 0

Sample Name	Analyte Peak Name	Area (cps)	S/N	Analyte RT(min)	Target conc. ()	Calculated Concentration (ng/mL)
2	TMP_1	1.577e5	453.8	3.78	N/A	＜0

Sample Name	Analyte Peak Name	Area (cps)	S/N	Analyte RT(min)	Target conc. ()	Calculated Concentration (ng/mL)
3	TMP_1	1.463e5	236.1	3.78	N/A	< 0

低标（加标100ng/L）图谱

Sample Name	Analyte Peak Name	Area (cps)	S/N	Analyte RT(min)	Target conc. ()	Calculated Concentration (ng/mL)
4	TMP_1	8.598e6	6830.3	3.78	N/A	120.35

Sample Name	Analyte Peak Name	Area (cps)	S/N	Analyte RT(min)	Target conc. ()	Calculated Concentration (ng/mL)
5	TMP_1	8.371e6	17982.6	3.78	N/A	118.04

Sample Name	Analyte Peak Name	Area (cps)	S/N	Analyte RT(min)	Target conc. ()	Calculated Concentration (ng/mL)
6	TMP_1	8.453e6	20242.8	3.78	N/A	106.29

高标（加标100ng/L）图谱

Sample Name	Analyte Peak Name	Area (cps)	S/N	Analyte RT(min)	Target conc. ()	Calculated Concentration (ng/mL)
7	TMP_1	1.391e7	26613.6	3.78	N/A	196.23

Sample Name	Analyte Peak Name	Area (cps)	S/N	Analyte RT(min)	Target conc. ()	Calculated Concentration (ng/mL)
8	TMP_1	1.437e7	23038.2	3.78	N/A	197.57

Sample Name	Analyte Peak Name	Area (cps)	S/N	Analyte RT(min)	Target conc. ()	Calculated Concentration (ng/mL)
9	TMP_1	1.380e7	7995.5	3.78	N/A	188.62

低标加标回收率（范围 50%-200%）：114.89%

高标加标回收率（范围 50%-200%）：97.07%

低标精密度（3次重复标准偏差）：6.56%

高标精密度（3次重复标准偏差）：2.49%