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High purity Imiquimod 98% CAS:99011-02-6
Cas No: 99011-02-6
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99011-02-6 Usage

Mechanism of action

Imiquimod itself has no direct effect on the virus itself, but instead through stimulating the body for producing cytokines and stimulating immune response to eliminate the wart tissue and reduce the viral erosion.
Both in vivo and in vitro studies have suggested that imiquimod can stimulate the mice, rats, rabbits, guinea pigs, monkeys and humans for producing cytokine. Racial cross cell culture tests have shown that the main responsive cells are monocytes/macrophages; cultured human peripheral mononuclear cells (PBMC) which can produce several subtypes of IFN-α, TNF-α, IL-1,6,6 , 10,12, MIP-1 and MCP-1; the human single cell THP-1 will respond only when being pre-subject to γ-IFN treatment and produce TNF-α, IL-1,6,8, but do not produce IFN-α; performing the same treatment on the fresh mice PBMC can generate the same cytokine as human PBMC; senescence macrophages and alveolar macrophages produce the same cytokines, the mouse RAW264.7 and J774 macrophages family can produce TNF-α and IL-6 without producing IFN-α. Through intracellular test, we can confirm that imiquimod can induce IFN-α and TNF-α.
Through putting the human fibroblasts and keratinocytes with the mixture of imiquimod or poly-inosine: poly-cytidine for incubation of 24 hours, people has found that the mRNA of keratinocytes IL-6 and IL-8 (no TNF-α) had increased but only appropriate amount of IL-8 protein had been detected. At high concentration, the secretion of the fibroblasts IL-8 is similar with keratinocytes; The immune response of caused by the imiquimod-induced secretion of cytokines is similar with the DTH response; imiquimod can activate the anti-tumor activity and DTH response of the HPV E7 gene transfected tumor bearing mice; human and animal experiments have shown that imiquimod could increase the 2'5'-oligo-adenylate synthase which can induce the interferon for inducing the antiviral effect; interferons and other cytokines can activate NK cells to kill tumor cells and the virus-infected cells; both in vivo and in vitro tests have showed that the imiquimod can increase activity of NK and stimulate the proliferation and activation of mouse spleen B cells which is the direct effect rather than being mediated by cytokine; imiquimod does not directly enhance T-lymphocyte activity; but in vitro mitogenic response can stimulate T-cells for enhancing the production and proliferation of IL-2. In vivo experiments have demonstrated that it can enhance T cell activity; imiquimod can increase the generation of IL-2 of the HSV infected guinea pig, T cell proliferation and T cell activity to enhance the cell-mediated immune response.
The above information is edited by the Chemicalbook of Dai Xiongfeng.

Side effects

1, the majority of patients get no adverse reactions during the treatment. After several times of treatment, the clinical adverse reactions are mostly mild, moderate local skin inflammation. For example, there may be local skin erythema, edema, erosion, ulcers, desquamation, burning, pain, itching and so on.
2, there is occasional transient fever and these symptoms can quickly recover after stopping the drugs. If the reactions are mild, you can continue for the treatment. However, the patients should discontinue the drug on time and should be subject to medical treatment if severe reactions happen.
3, According to the reports of foreign information, possible adverse reactions associated with imiquimod cream include discomfort in the medication site, wart site reactions (burning, pigmentation, inflammation, itching, pain, rash, sensitivity, ulcers, tingling and tenderness).Distal site reactions (bleeding, burning, itching, pain and tenderness), fatigue, fever, flu-like symptoms, headache, diarrhea, myalgia.

Clinical Study

In an unpublished report, 209 cases of patients of genital or perianal warts have been subjected to a double-blind trial with both this product and vehicles being used for three times per week for continuous 16 weeks. The results have shown that, 33 cases in 46 cases of women (72%), 21 cases in 63 cases of male(33%) get cured with the total wart cure rate being 50%, while only 11% (20% of women and 5% male) in the vehicles group get cured. There have been patients who get cured within treatment of only 4 weeks. The average healing time is twelve weeks for men and eight weeks for women. In the following 12 weeks, there were 39 cases in 54 cases that got no recurrence any more.

Brand name

Aldara (3M Pharmaceuticals).

Biological Activity

Immunomodulator that displays antiviral and antitumor activity. Acts as a Toll-like receptor 7 (TLR-7) agonist; stimulates proinflammatory cytokine production and activates NF- κ B.

Usage and Dosage

It can be used for the treatment of adult external genital and perianal genital warts at 3 times per week. Just before sleep, first apply the product evenly in a thin layer on the surface of the wart and gently massage until the product is completely absorbed. The position of the medication should not be packeted and should be maintained for 6 to 10 hours, and then wash with a neutral soap and clean water for clearing the drugs in the administration site. Wash your hands before and after treatment. 250 mg of cream can be applied to 20cm2 of wart. Avoid excessive application of the drug. Patients should continue the treatment until the wart is completely cleared. Wart can be cleared within 2-4 week at the fastest speed and can be generally cleared within 8 to 12 weeks. The medication should be not more than 16 weeks. After the treatment, patients with mild erythema locally who does not have to be discontinued for drug; if the patients feel general malaise or get local skin reactions (edema, erosion, pain, etc.), the drug should be discontinued. Only when the reaction is alleviated can they continue the medication.



Drug for treatment of Genital warts

Imiquimod is a kind of imidozoquinoline amine-class interleukin agonist developed by the 3M Pharmaceuticals Company (US), belonging to the drug for the treatment of genital warts. Upon being applied to the mice skin, it can induce the cytokinesis and produce α-interferon, tumor necrosis factor and many kinds of interleukins. Clinically it can be used as the immunomodulators in the treatment of adult genital and perianal warts with convenient application, well tolerance and unique mechanism of action which makes it be the first-choice drug for treatment of genital warts. In addition, there are reports that imiquimod can be used for treating viral skin diseases including common warts, flat warts, molluscum and herpes simplex virus. It can also be effective in treating basal cell carcinoma, Bowen's disease, Bowen papulosis, actinic keratosis, and skin tumors such as cutaneous T-cell tumor and Kaposi's sarcoma. It may also be effective in treating vitiligo and alopecia areata.
Genital wart is the infective diseases of the human herpes virus (HPV) infection and is a major public health threat. Currently, the infection of the genital wart in the United States is the most common viral infective sexually transmitted diseases and one of the most common sexually transmitted diseases. The infections mostly occur in sexually active people, especially for people of 20 to 24 year-olds and women in pregnancy, and prone to happen at the warm and most mucosal sites of body. Application of immunosuppressive agents or infection with the patients of human immunodeficiency virus is prone to cause severe clinical signs of infection.


It can be used for anti-genital warts and as immunomodulators


1. No packets; wash away the drug after 6 to 10 hours of the drug administration. The patients should avoid using this product in partial breakage place. There have been reports of using drugs or laser for treatment of genital warts that lead to the emergence of damaged parts. In that case, we should continue the drugs until the wound get healed.
2. It should not be applied to the treatment of genital warts located at the eyes, mouth, nose, urethra, vagina, cervix and anal mucous membranes.
3. You should avoid sex during the treatment. For patients using condom, the patients should first clean the topical imiquimod because imiquimod can make condom be fragile.
4. For male patients with foreskin, during the treatment, the patients should reveal the foreskin every day and clean the application site. If the foreskin mucosa surface gets erosion, ulceration, edema and difficulty for turning up foreskin, you should immediately stop the treatment.
5. There have been no reports regarding the drug contraindications in pregnant and lactating women, but the patients should use with caution.


raw material for Latamoxef, Cefminox, Ceftizoxime, Cefoxitin, Cefmetazole


An immune response modifier. It stimulates the production of interferon-a

Chemical Properties

White to off white crystalline powder

99011-02-6 Well-known Company Product Price

Brand (Code)Product description CAS number Packaging Price Detail
USP (1338313)  Imiquimod  United States Pharmacopeia (USP) Reference Standard 99011-02-6 1338313-200MG 4,326.66CNY Detail
TCI America (I0747)  Imiquimod  >98.0%(HPLC)(T) 99011-02-6 1g 2,990.00CNY Detail
TCI America (I0747)  Imiquimod  >98.0%(HPLC)(T) 99011-02-6 100mg 490.00CNY Detail



According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 12, 2017

Revision Date: Aug 12, 2017


1.1 GHS Product identifier

Product name imiquimod

1.2 Other means of identification

Product number -
Other names Imiquimod

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

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