![CAS 643-79-8 o-Phthalaldehyde [for HPLC Labeling] molecular structure](https://starshinechemical.com/wp-content/uploads/2022/03/p0280-jpgcontextbwfzdgvyfhjvb3r8mzy4mjf8aw1hz2uvanblz3xonjkvadbklzg5mze4otq0mjc2nzgvudayodauanbnfdayotllnwizzdkzm2fjyzu0mmyxmwqxzji0yjjjnjq1ndcznzmxytm1yznmogq4odrjm2qzmtzhmdfmntiwzge.jpeg)
CAS RN: 643-79-8
o-Phthalaldehyde [for HPLC Labeling]
Product Availability
Choose a grade to view its available package options.
11 package records11 with current stock5 grade groups
| Batch No. | Package | Availability | Warehouse | Inquiry |
|---|---|---|---|---|
| Batchno.20260129 | 1g / 5g / 25g / 100g / 500g | Confirm by inquiry | Shanghai, Shandong, Chongqing, Hebei, Guangdong | Inquiry |
| Batch No. | Package | Availability | Warehouse | Inquiry |
|---|---|---|---|---|
| Batchno.20260310 | 1g / 5g / 25g / 100g / 500g | Confirm by inquiry | Shanghai, Shandong, Guangdong, Chongqing, Hebei | Inquiry |
| Batch No. | Package | Availability | Warehouse | Inquiry |
|---|---|---|---|---|
| Batchno.20251030 | 5ml | In stock | Shanghai, Shandong | Inquiry |
- Product code: SSC-174069
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: 25g, 10g, 100g, 500g
- Available purity: ≥98%
- 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.
643-79-8 / phthalaldehyde
Basic Information
CAS
643-79-8
Multi CAS
Yes
Molecular Formula
C8H6O2
Molecular Weight
134.130000
Exact Mass
134.036779
InChI
InChI=1S/C8H6O2/c9-5-7-3-1-2-4-8(7)6-10/h1-6H
InChIKey
ZWLUXSQADUDCSB-UHFFFAOYSA-N
Physical Properties
Melting Point
55.8 °C
Boiling Point
BP: 83 °C at 0.8 mm Hg
Density
Density (at 20 °C): 1.13 g/cm³
Physical Description
Pale yellow or colorless solid; Yellow powder or lumps;
YELLOW SOLID IN VARIOUS FORMS WITH CHARACTERISTIC ODOUR.
Appearance
Long, pale yellow needles from petroleum ether (MP 56-56.5 °C). Also reported as colorless powder (MP: 54 °C)
Yellow needles or crystals from ligroin
State
Solid
Computed Properties
Structural Parameters
Heavy atom count
10
Aromatic heavy atom count
6
Rotatable bonds
2
H-bond acceptors
2
Molar refractivity
37.22
TPSA
34.14
LogP / Solubility
WLOGP
1.31
MLOGP
1.15
XLogP3
1.2
Consensus LogP
1.22
Log S (ESOL)
-1.81
Class (ESOL)
Soluble
Log S (Ali)
-1.61
Class (Ali)
Soluble
Log S (SILICOS-IT)
-1.86
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)
-2.61
Drug-likeness / Medicinal Chemistry
Lipinski
Yes
Ghose
No
Veber
Yes
Egan
Yes
Muegge
No
Bioavailability score
0.55
Brenk alerts
1
Leadlikeness
No
Synthetic Accessibility
1.5
Applications of CAS 643-79-8
This compound is commonly used in analytical chemistry and reference standard applications, laboratory reagent and synthesis applications, general chemistry research and laboratory applications. Starshine Chemical supplies CAS 643-79-8 for R&D and pilot-scale use, with flexible pack sizes and purity grades available.
Physical & Chemical Properties
| IUPAC Name | phthalaldehyde |
Safety Information (GHS)
Pictogram(s): GHS02, GHS05, GHS06, GHS07, GHS08, GHS09. Signal word: Danger.
- H228 (44.3%): Flammable solid [Danger Flammable solids]
- H301 (97.9%): Toxic if swallowed [Danger Acute toxicity, oral]
- H314 (74%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]
- H315 (26%): Causes skin irritation [Warning Skin corrosion/irritation]
- H317 (97.4%): May cause an allergic skin reaction [Warning Sensitization, Skin]
- H318 (73.6%): Causes serious eye damage [Danger Serious eye damage/eye irritation]
- H335 (28.1%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]
- H373 (44.3%): May causes damage to organs through prolonged or repeated exposure [Warning Specific target organ toxicity, repeated exposure]
- H400 (95.7%): Very toxic to aquatic life [Warning Hazardous to the aquatic environment, acute hazard]
- H410 (87.2%): Very toxic to aquatic life with long lasting effects [Warning Hazardous to the aquatic environment, long-term hazard]
- H301: Toxic if swallowed [Danger Acute toxicity, oral]
- H314: Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]
Precautionary statements: P210, P240, P241, P260, P261, P264, P264+P265, P270, P271, P272, P273, P280, P301+P316, P301+P330+P331, P302+P352, P302+P361+P354, P304+P340, P305+P354+P338, P316, P317, P319, P321, P330, P332+P317, P333+P317, P362+P364, P363, P370+P378, P391, P403+P233, 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: Air Sensitive. 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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