CS-415 Introduction
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Olmesartan powder (CAS 144689-24-7) is the active ingredient of angiotensin II receptor antagonists and is the core raw material of Olmesartan Medoxomil. CS-415 is mainly produced through a multi-step chemical synthesis route starting from intermediates such as 4'-Methyl-2-cyanobiphenyl. The industrial production route is relatively mature. In terms of application, Olmesartan Acid is exclusively used for the research and production of oral preparations in the fields of hypertension and related cardiovascular and cerebrovascular diseases. It is the key component that plays a blood pressure-lowering role in various tablets and compound preparations. From an industrial perspective, the market supply system of Olmesartan Acid is relatively complete. Relying on the scale advantage of China's pharmaceutical industry, its production capacity and export volume have remained stable for a long time. There is a continuous and rigid demand for it in the global generic product market, and the relevant quality control standards have been clearly stipulated in the pharmacopoeias of various countries.
How does Olmesartan Acid function in the human body?
The key to the effectiveness of Olmesartan powder lies in its selective blocking effect on the type 1 angiotensin II receptor. The angiotensin II present within the body can act on the AT1 receptor on the smooth muscle of blood vessels, causing them to contract and thereby raising blood pressure. Olmesartan Acid will preferentially occupy the binding sites of the AT1 receptor, preventing angiotensin II from binding to it, cutting off the signal transmission that causes blood vessel contraction, and helping the blood vessels maintain a dilated state, achieving the effect of regulating blood pressure. This substance has a strong binding ability to the AT1 receptor, much stronger than its effect on the AT2 receptor. Its targeted action is prominent, and after binding, it does not undergo secondary transformation in the body. It does not pass through the cytochrome P450 enzyme system in liver cells for processing, and has a relatively lower probability of interacting with other substances metabolized through this enzyme system. Some existing research results also mention that CS 088 can upregulate the expression level of ACE2 enzyme, promoting the generation of angiotensin 1-7 with vascular protection effects, bringing more potential positive physiological effects. However, the current mainstream research understanding still regards its blocking effect on the AT1 receptor as the core basis.

For which groups of people is Olmesartan Acid suitable?

The finished formulations corresponding to Olmesartan powder are mostly used in adult hypertension-related research. They can be used for both independent assessment and combined exploration with other intervention methods. Children over 6 years old with hypertension can be included in relevant trials under complete professional assessment, but infants under 1 year old are not applicable. At this stage, the kidneys of the body are still in the developmental stage, and exposure to such substances may interfere with the normal development process of the kidneys.
Some special groups need to be considered more carefully when conducting related research: elderly subjects, subjects with mild to moderate liver and kidney function decline, generally do not need to adjust the initial trial dose; however, if an individual experiences insufficient water and electrolytes due to factors such as diuretics, a full observation should be made and the trial should be started from a lower level. Additionally, the pregnancy stage, especially the middle and late stages of pregnancy, is not suitable for exposure to CS 088, as it may pose potential risks to the fetus; in diabetes-related research scenarios, it is not recommended to combine CS-415 and Aliskiren. For hypertension-related research subjects who already have cardiovascular high-risk factors such as diabetes and dyslipidemia, after the blood pressure indicators are controlled, they can often achieve more significant comprehensive benefits.
MF of Olmesartan

| CAS | 144689-24-7 |
| Molecular formula | C24H26N6O3 |
| EINECS | 646-413-5 |
| Molecular weight | 446.5 |
Specification
| Item | Specification | Result |
| Appearance | White powder | Complies |
| Assay | ≥98.0% | 98.59% |
| Conclusion | Conform with enterprise specification | |
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FAQ:
Q1:What is the half-life of CS-415 approximately?
After being transformed into an active form, the elimination half-life of its active ingredients in the body is approximately 13 hours. Taking it once a day can maintain a relatively stable level of effect.
Q2:What are the main differences between CS-415 and similar products (such as Valsartan, Losartan carboxylic acid)?
The differences are manifested at several levels: Firstly, the affinity of CS-415 for the AT1 receptor is higher than that of Valsartan and Losartan carboxylic acid, and the binding is more stable; Secondly, it does not undergo metabolism by the liver's CYP450 enzyme system, reducing the risk of interaction with other substances; Thirdly, its dosage conversion relationship is different, and the required mass for achieving the same blood pressure reduction is smaller than that of other several products.
Q3:Does the metabolite of Olmesartan Medoxomil-1 have any activity in the body?
Its metabolites have essentially no pharmacological activity, which is different from that of some other ARB components. They do not cause any additional systemic effects.
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