CAS RN: 4857-42-5
3-Methylisoxazole-5-carboxylic Acid
Product Availability
Choose a grade to view its available package options.
7 package records7 with current stock1 grade group
| Batch No. | Package | Availability | Warehouse | Lead Time | Inquiry |
|---|---|---|---|---|---|
| Batchno.20250303 | 100g | In stock | Shanghai | Inquiry | |
| Batchno.20251203 | 10g | In stock | Shanghai, Tianjin | Inquiry | |
| Batchno.20250130 | 1g | In stock | Shanghai | Inquiry | |
| Batchno.20260407 | 250mg | In stock | Shanghai, Shenzhen, Tianjin | Inquiry | |
| Batchno.20260606 | 250mg / 1g / 5g / 25g / 100g | Confirm by inquiry | Shanghai | 8-10 business days | Inquiry |
| Batchno.20260131 | 25g | In stock | Shanghai, Chengdu | Inquiry | |
| Batchno.20250105 | 5g | In stock | Shanghai, Shenzhen, Tianjin | Inquiry |
- Product code: SSC-155285
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: 0.25g, 1g, 5g, 10g, 25g
- Available purity: ≥95%
- Inventory rows with stock: 1
- 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 |
|---|---|---|---|---|
| 0.25g | ≥95% | 1 In Stock | Shenzhen | Inquiry |
| 1g | ≥95% | 0 Out of Stock | Shanghai | Inquiry |
| 5g | ≥95% | 0 Out of Stock | Beijing | Inquiry |
| 10g | ≥95% | 0 Out of Stock | Hong Kong | Inquiry |
| 25g | ≥95% | 0 Out of Stock | Hong Kong | Inquiry |
4857-42-5 / 5-methyl-1,2-oxazole-3-carboxylic acid
Basic Information
CAS
4857-42-5
Multi CAS
Yes
Molecular Formula
C5H5NO3
Molecular Weight
127.100000
Exact Mass
127.026943
InChI
InChI=1S/C5H5NO3/c1-3-2-4(5(7)8)9-6-3/h2H,1H3,(H,7,8)
InChIKey
HXIYCKAAQPHZBM-UHFFFAOYSA-N
Computed Properties
Structural Parameters
Heavy atom count
9
Aromatic heavy atom count
5
Fraction Csp3
0.2
Rotatable bonds
1
H-bond acceptors
3
H-bond donors
1
Molar refractivity
28.2
TPSA
63.33
LogP / Solubility
WLOGP
0.68
MLOGP
0.59
XLogP3
0.7
Consensus LogP
0.66
Log S (ESOL)
-1.4
Class (ESOL)
Soluble
Log S (Ali)
-1.09
Class (Ali)
Soluble
Log S (SILICOS-IT)
-1.17
Class (SILICOS-IT)
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)
-3.01
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 4857-42-5
This compound is commonly used in pharmaceutical research and drug discovery, life science and biochemical research, laboratory reagent and synthesis applications, general chemistry research and laboratory applications. Starshine Chemical supplies CAS 4857-42-5 for R&D and pilot-scale use, with flexible pack sizes and purity grades available.
Storage & Handling
Storage: Keep the container tightly closed in a cool, dry and well-ventilated place. 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.
