2,4-Dihydroxypteridine(CAS 487-21-8)
| Purity | Grade | Package | Stock | Price | Quantity |
| 99% | RG | 250MG | In Stock | 10 USD
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| 99% | RG | 1G | In Stock | 26 USD
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| 99% | RG | 5G | In Stock | 95 USD
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| 99% | RG | 25G | In Stock | 321 USD
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| 99% | RG | 100G | In Stock | 938 USD
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Quality System
Physical and chemical properties of 487-21-8
Acidity coefficient |
pK1:<1.3;pK2:7.92 (25°C) |
|---|---|
Boiling Point |
551.1±60.0 °C at 760 mmHg |
BRN |
157503 |
Density |
1.8±0.1 g/cm3 |
Exact Mass |
164.033432 |
Flash Point |
287.1±32.9 °C |
Index of Refraction |
1.809 |
LogP |
-1.26 |
Melting Point |
300 °C |
Merck |
14,5596 |
Molecular Formula |
C6H4N4O2 |
Molecular Weight |
164.122 |
PSA |
91.50000 |
Solubility |
DMSO (Slightly) |
Storage condition |
2-8°C |
Vapour Pressure |
0.0±1.5 mmHg at 25°C |
Water Solubility |
0.125 g/100 mL (25 ºC) |
Q&A for CAS 487-21-8
1. How can I verify product quality?
Every batch of our Chemical Reagents is tested to meet ISO 9001 standards. We provide COA & NMR & SDS Provided with each shipment. Batch COA available for verification, and third-party retesting is supported. A full refund is offered if our data is incorrect.
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If your Lab Grade Chemical Reagents do not match the Batch COA available, we will issue a replacement or a full refund upon verification.
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Hazardous products are labeled and packaged following international regulations. We provide SDS Provided with all hazardous shipments to ensure safe and compliant transport.
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Yes. Our Lab Supplier team is available to assist with questions about product usage, storage, Lab Grade requirements, applications, and more.
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7. Do you provide samples?
Yes, samples are available for selected Lab Grade products. Please submit a request to confirm availability and specifications.
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Yes. Items labeled In stock / Ready stock on our website are available for immediate shipment, usually within 1–2 business days. Large packs or custom specifications require lead time confirmation.
9. Can you customize purity or packaging?
Yes. We support customization of Lab Grade purity, packaging size, and special testing requirements. Share your needs and we’ll provide a tailored solution.
10. Is the COA consistent with the shipped batch?
Yes. Batch COA available matches the actual shipment. COAs shown online are for reference or from previous batches.
11. Do you support long-term supply agreements?
Yes. We offer Lab Supplier services for stable batch consistency, pricing agreements, and safety stock for long-term customers to ensure uninterrupted supply.
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Download SDS of 487-21-8
Pictograms |
 |
|---|---|
Signal Word |
Warning |
Hazard Statements |
H302 Harmful if swallowed H319 Causes serious eye irritation |
Safety Data Sheet |
Download COA of 487-21-8
Operate under the ISO 9001 system
