CAS RN: 290-37-9
Pyrazine
Product Availability
Choose a grade to view its available package options.
9 package records9 with current stock2 grade groups
| Batch No. | Package | Availability | Warehouse | Inquiry |
|---|---|---|---|---|
| Batchno.20250130 | 100g | In stock | Shanghai, Shandong, Guangdong, Chongqing | Inquiry |
| Batchno.20260112 | 2.5kg | In stock | Shanghai, Shandong | Inquiry |
| Batchno.20260409 | 25g | In stock | Shanghai, Shandong, Guangdong, Hebei | Inquiry |
| Batchno.20260630 | 500g | In stock | Shanghai, Shandong, Chongqing, Hebei | Inquiry |
| Batchno.20250809 | 5g | In stock | Shanghai, Shandong, Guangdong, Chongqing, Hebei | Inquiry |
- Product code: SSC-131114
Verified Factory Data
Supply Overview & Packaging Options
Packaging options, recorded purity, stock quantity and ship-from location below are generated from the current factory data table for this CAS.
- Pack sizes on record: 10g, 5g, 25g, 100g, 500g, 1000g
- Available purity: ≥98%
- Inventory rows with stock: 5
- Bulk packaging: confirmed by inquiry
Available Pack Sizes & Stock
Specific stock quantities are shown below. Price is not displayed online and is confirmed by inquiry.
| Pack Size | Recorded Purity | Available Qty | Ship From | Inquiry |
|---|---|---|---|---|
| 10g | ≥98% | 5 In Stock | Shenzhen | Inquiry |
| 10g | -- | 4 In Stock | Shenzhen | Inquiry |
| 5g | ≥98% | 3 In Stock | Shenzhen | Inquiry |
| 25g | ≥98% | 3 In Stock | Shenzhen | Inquiry |
| 5g | -- | 2 In Stock | Shanghai | Inquiry |
| 25g | -- | 0 Out of Stock | Shanghai | Inquiry |
| 100g | -- | 0 Out of Stock | Shanghai | Inquiry |
| 100g | ≥98% | 0 Out of Stock | Beijing | Inquiry |
| 500g | -- | 0 Out of Stock | Shanghai | Inquiry |
| 500g | ≥98% | 0 Out of Stock | Hong Kong | Inquiry |
| 1000g | -- | 0 Out of Stock | Shenzhen | Inquiry |
290-37-9 / pyrazine
Basic Information
CAS
290-37-9
Multi CAS
Yes
Molecular Formula
C4H4N2
Molecular Weight
80.090000
Exact Mass
80.037448
InChI
InChI=1S/C4H4N2/c1-2-6-4-3-5-1/h1-4H
InChIKey
KYQCOXFCLRTKLS-UHFFFAOYSA-N
Physical Properties
Melting Point
54 - 56 °C
Boiling Point
115.00 to 116.00 °C. @ 760.00 mm Hg
Physical Description
Solid with a strong odor like pyridine; White crystalline solid with a strong odor;
Solid
deliquescent crystals or wax-like solid with a pungent, sweet, corn-like, nutty odour
State
Solid
Computed Properties
Structural Parameters
Heavy atom count
6
Aromatic heavy atom count
6
H-bond acceptors
2
Molar refractivity
22.03
TPSA
25.78
LogP / Solubility
WLOGP
0.48
MLOGP
0.41
XLogP3
-0.2
Consensus LogP
0.23
Log S (ESOL)
-1.38
Class (ESOL)
Soluble
Log S (Ali)
-0.56
Class (Ali)
Very soluble
Log S (SILICOS-IT)
-0.58
Class (SILICOS-IT)
Very soluble
ADME
GI absorption
High
BBB permeant
Yes
P-gp substrate
No
CYP1A2 inhibitor
No
CYP2C19 inhibitor
No
CYP2C9 inhibitor
No
CYP2D6 inhibitor
No
CYP3A4 inhibitor
No
Log Kp (skin permeation)
-2.87
Drug-likeness / Medicinal Chemistry
Lipinski
Yes
Ghose
No
Veber
Yes
Egan
Yes
Muegge
No
Bioavailability score
0.55
Leadlikeness
No
Synthetic Accessibility
1.5
Applications of CAS 290-37-9
This compound is commonly used in materials science and advanced materials development, metal and coordination compound chemistry, organic synthesis and chemical building blocks, general chemistry research and laboratory applications. Starshine Chemical supplies CAS 290-37-9 for R&D and pilot-scale use, with flexible pack sizes and purity grades available.
Physical & Chemical Properties
| IUPAC Name | pyrazine |
Safety Information (GHS)
Pictogram(s): GHS02, GHS07. Signal word: Danger.
- H225 (47.9%): Highly Flammable liquid and vapor [Danger Flammable liquids]
- H228 (44.2%): Flammable solid [Danger Flammable solids]
- H315 (99.4%): Causes skin irritation [Warning Skin corrosion/irritation]
- H319 (99.4%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
- H335 (98.8%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]
Precautionary statements: P210, P233, P240, P241, P242, P243, P261, P264, P264+P265, P271, P280, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P370+P378, P403+P233, P403+P235, P405, and P501 (click each P-code to see the statement)
Request the SDS (Safety Data Sheet) for full hazard and safety documentation.
Storage & Handling
Storage: Store under inert gas. Avoid: Hygroscopic. For detailed hazard, storage and transport information, request the SDS (Safety Data Sheet) with your inquiry.
Quotation & Packaging
Prices are confirmed by inquiry. Request a quote for current pricing, minimum order quantity (MOQ) and lead time. The pack sizes listed on this page are reference options; custom pack sizes and bulk quantities are available on request.
Quality & Compliance
Specifications and purity shown on this page are based on batch records. A Certificate of Analysis (COA) is available on request. For research and further manufacturing use only — not for direct human or therapeutic use.
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