本品为16a -甲基-11B,17a,21-三羟基-9a-氟孕甾-1,4-二烯-3,20-二酮。按干燥品计算,含C22H29F05 应为97.0% 〜102.0%.
取本品,精密称定,加二氧六环溶解并定量稀释制成每lml中约含1Omg的溶液,依法测定(通则0621),比旋度为+72°至+80°。
取本品,精密称定,加乙醇溶解并定量稀释制成每lml中约含10ug的溶液,照紫外-可见分光光度法(通则0401),在240nm的波长处测定吸光度,吸收系数为380〜410。
取本品,精密称定,加甲醇溶解并定量稀释制成每lml中约含0.5mg的溶液,作为供试品溶液;另取倍他米松对照品,精密称定,加甲醇溶解并定量稀释制成每lml中约含0.5mg的溶液,精密量取1ml,置100ml量瓶中,精密加供试品溶液1ml,用甲醇稀释至刻度,摇匀,作为对照溶液。照含量测定项下的色谱条件,精密量取供试品溶液与对照溶液各20ul,分别注人液相色谱仪,记录色谱图至主成分峰保留时间的2.5 倍。供试品溶液色谱图中如出现与对照溶液中倍他米松相应的色谱峰,按外标法以峰面积计算,含量不得过0.5% ;其他单个杂质峰面积不得大于对照溶液中地塞米松峰面积(1.0% ) ,各杂质峰面积的和不得大于对照溶液中地塞米松峰面积的2倍(2.0% ) 。供试品溶液色谱图中小于对照溶液中地塞米松峰面积0.01倍的峰忽略不计。
取本品,在105°C干燥3小时,减失重量不得过0.5% (通则 0831)。
不得过0.2 % (通则0841)。
中文名 | 地塞米松 |
英文名 | Dexamethasone |
别名 | 试剂 地塞米松 甲氟烯索 氟甲强的松龙 地塞米松 溶液 9-氟-11,17,21-三羟基-16-甲基(11β,16α)-孕甾-1,4-二烯-3,20-二酮 9-氟-11,17,21-三羟基-16-甲基(11B,16A)-孕甾-1,4-二烯-3,20-二酮 |
英文别名 | CALONAT DEXAMETHASON Dexamethasone DEXAMETHASONE DEXAMETHASONUM DEXAMETHASONE BASE 9-alpha-fluoro-16-alpha-methylprednisolone (11B,16A)-9-FLUORO-11,17,21-TRIHYDROXY-16-METHYL-PREGNA-1,4-DIENE-3,20-DIONE 1,4-PREGNADIEN-9ALPHA-FLUORO-16ALPHA-METHYL-11BETA, 17ALPHA, 21-TRIOL 3,20-DIONE (11BETA,16ALPHA)-9-FLUORO-11,17,21-TRIHYDROXY-16-METHYLPREGNA-1,4-DIENE-3,20-DIONE 9alpha-Fluoro-11beta,17alpha,21-trihydroxy-16alpha-methylpregn-1,4-diene-3,20-dione (8xi,11beta,16alpha)-9-fluoro-11,17,21-trihydroxy-16-methylpregna-1,4-diene-3,20-dione 9-alpha-fluoro-11-beta,17-alpha,21-trihydroxy-16-alpha-methylpregna-1,4-diene-3,20-dione |
CAS | 50-02-2 |
EINECS | 200-003-9 |
化学式 | C22H29FO5 |
分子量 | 392.47 |
InChI | InChI=1/C22H29FO5/c1-12-8-16-15-5-4-13-9-14(25)6-7-19(13,2)21(15,23)17(26)10-20(16,3)22(12,28)18(27)11-24/h6-7,9,12,15-17,24,26,28H,4-5,8,10-11H2,1-3H3/t12-,15?,16+,17+,19+,20+,21+,22+/m1/s1 |
InChIKey | UREBDLICKHMUKA-CXSFZGCWSA-N |
密度 | 1.1283 (estimate) |
熔点 | 262-264 °C (lit.) |
沸点 | 568.2±50.0 °C(Predicted) |
比旋光度 | 75 º (c=1, dioxane) |
闪点 | 9℃ |
水溶性 | 10 mg/100 mL (25 ºC) |
蒸汽压 | 2.81E-15mmHg at 25°C |
溶解度 | 乙醇: 1mg/ml |
折射率 | 76 ° (C=1, Dioxane) |
酸度系数 | 12.13±0.70(Predicted) |
存储条件 | 2-8°C |
稳定性 | 稳定。可燃。与强氧化剂、强碱、酸酐、酰氯不相容。可能对光线敏感。 |
敏感性 | Light Sensitive |
外观 | 粉末 |
颜色 | off-white |
Merck | 14,2943 |
BRN | 2066651 |
物化性质 | 熔点 255-264°C 比旋光度 75° (c=1, dioxane) 水溶性 10 mg/100 mL (25°C) |
MDL号 | MFCD00064136 |
危险品标志 | Xi - 刺激性物品![]() Xn - 有害物品 ![]() T - 有毒物品 ![]() F - 易燃物品 ![]() |
风险术语 | R43 - 与皮肤接触可能致敏。 R40 - 少数报道有致癌后果。 R36/37/38 - 刺激眼睛、呼吸系统和皮肤。 R20/21/22 - 吸入、皮肤接触及吞食有害。 R42/43 - 吸入及皮肤接触可能致敏。 R39/23/24/25 - R23/24/25 - 吸入、皮肤接触及吞食有毒。 R11 - 高度易燃。 |
安全术语 | S36/37 - 穿戴适当的防护服和手套。 S45 - 若发生事故或感不适,立即就医(可能的话,出示其标签)。 S36 - 穿戴适当的防护服。 S26 - 不慎与眼睛接触后,请立即用大量清水冲洗并征求医生意见。 S22 - 切勿吸入粉尘。 S16 - 远离火源。 |
危险品运输编号 | UN1230 - class 3 - PG 2 - Methanol, solution |
WGK Germany | 2 |
RTECS | TU3980000 |
TSCA | Yes |
海关编号 | 29372210 |
上游原料 | 氢氟酸 |
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本品为16a -甲基-11B,17a,21-三羟基-9a-氟孕甾-1,4-二烯-3,20-二酮。按干燥品计算,含C22H29F05 应为97.0% 〜102.0%.
取本品,精密称定,加二氧六环溶解并定量稀释制成每lml中约含1Omg的溶液,依法测定(通则0621),比旋度为+72°至+80°。
取本品,精密称定,加乙醇溶解并定量稀释制成每lml中约含10ug的溶液,照紫外-可见分光光度法(通则0401),在240nm的波长处测定吸光度,吸收系数为380〜410。
取本品,精密称定,加甲醇溶解并定量稀释制成每lml中约含0.5mg的溶液,作为供试品溶液;另取倍他米松对照品,精密称定,加甲醇溶解并定量稀释制成每lml中约含0.5mg的溶液,精密量取1ml,置100ml量瓶中,精密加供试品溶液1ml,用甲醇稀释至刻度,摇匀,作为对照溶液。照含量测定项下的色谱条件,精密量取供试品溶液与对照溶液各20ul,分别注人液相色谱仪,记录色谱图至主成分峰保留时间的2.5 倍。供试品溶液色谱图中如出现与对照溶液中倍他米松相应的色谱峰,按外标法以峰面积计算,含量不得过0.5% ;其他单个杂质峰面积不得大于对照溶液中地塞米松峰面积(1.0% ) ,各杂质峰面积的和不得大于对照溶液中地塞米松峰面积的2倍(2.0% ) 。供试品溶液色谱图中小于对照溶液中地塞米松峰面积0.01倍的峰忽略不计。
取本品,在105°C干燥3小时,减失重量不得过0.5% (通则 0831)。
不得过0.2 % (通则0841)。
照髙效液相色谱法(通则0512)测定。
用十八烷基硅烷键合硅胶为填充剂;以乙腈-水(28:72)为流动相;检测波长为240nm。取有关物质项下的对照溶液20ul注人液相色谱仪,记录色谱图,出峰顺序依次为倍他米松峰与地塞米松峰,分离度应符合要求。
取本品,精密称定,加甲醇溶解并定量稀释制成每lml中约含50ug 的溶液,作为供试品溶液,精密量取20ul注人液相色谱仪,记录色谱图;另取地塞米松对照品,同法测定。按外标法以峰面积计算,即得。
肾上腺皮质激素药。
遮光,密封保存。
本品含地塞米松(C22H29F05) 应为标示量的90.0 % 〜110.0 % 。
本品为白色片。
取本品20片,精密称定,研细,精密称取适量(约相当于地塞米松1.5mg ),置50ml量瓶中,加甲醇4滴湿润,加流动相适量,振摇使地塞米松溶解,用流动相稀释至刻度,摇匀,滤过,取续滤液作为供试品溶液;另精密称取地塞米松对照品约15mg,置50ml量瓶中,加甲醇2ml溶解后,用流动相稀释至刻度,摇匀,精密量取5ml,置50ml量瓶中,用流动相稀释至刻度,摇匀,作为对照品溶液。照地塞米松含量测定项下的方法测定,即得。
同地塞米松。
0.75mg
遮光,密封保存。
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