Product introduction：
Product name: Sildenafil
Cas: 139755-83-2
MF: C22H30N6O4S
Molecular Weight: 474.58
Other names: Revatio, Viagra
Description: White or almost white slightly hygroscopic crystalline powder.
Solubility: Slightly soluble in water and in methanol, Practically insoluble in hexane.
Overview: sildenafil citrate powder CAS 139755-83-2 is used to treat male sexual function problems (impotence or erectile dysfunction-ED). In combination with sexual stimulation, sildenafil works by increasing blood flow to the penis to help a man get and keep an erection.
Specification
| Product | Sildenafil | |
| Batch No. | 201911001 | |
| Mfg. date | 20191113 | |
| Perform standard | usp | |
| Item | Standards | Results |
| Description | White or almost white slightly hygroscopic crystalline powder. | White crystalline powder |
| Solubility | Slightly soluble in water and in methanol, Practically insoluble in hexane. | Conforms |
| Identification | The absorption maxima in the spectrum obtained with sample corresponds in position and relative intensity to those in the spectrum obtained with DIN-5-YL)-4-ETHOXYPHENYL)SULFONYL)-4-METHYL-,2-HYDROXY-1,2,3-PROPANETRICARBO USP CRS | Conforms |
| Limit of Imidazole by TLC | Not more than 0.1% | Conforms |
| Residual Solvents by GC | ||
| Methanol | ≤3000 ppm | 115ppm |
| Methylnechloride | ≤600 ppm | ND |
| Ethyl acetatae | ≤ 5000 ppm | ND |
| Toluene | ≤890 ppm | ND |
| Acetone | ≤5000 ppm | ND |
| Related
substances |
Related compound – A≤0.3% | 0.02% |
| Any other unspecified individual impurity≤0.1% | 0.04% | |
| Total unspecified impurities≤0.3% | 0.09% | |
| Total impurities≤0.5% | 0.11% | |
| Water content by KF | Not more than 2.50% | 0.87% |
| Residue on ignition | Not more than 0.10% | 0.07% |
| Heavy metals | Not more than 20 ppm | Complies |
| Assay by HPLC | 98.0% to 102.0% | 99.50% |
FAO
Q1: Can I get some samples?
A: Yes, we can supply the free sample, but the shipping cost be paid by our customers.
Q2: How to start orders or make payments?
A: Pro forma invoice will be sent first after confirmation of the order, enclosed is our bank information. Payment by T/T, Western Union or , Remitly.
Q3: How to confirm the Product Quality before placing orders?
A: You can get free samples for some products; you only need to pay the shipping cost or arrange a courier to us and take the samples.
Q4: What’s your MOQ?
A: Our MOQ is 1 kg. But usually, we accept less quantity such as 100g on the condition that the sample charge is 100% paid.
Q5: How to contact us?
A: You can chat with us by WhatsApp, Telegram, Signal, Skype Line, or WeChat. You can choose your interested products and send an inquiry to us. You can dial our telephone directly; you will get our reply. Email us.
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