4-Hydroxypyridine, also known as 4-pyridinol, is an organic compound with the chemical formula C5H5NO. It is a white crystalline solid that is soluble in water and various organic solvents. This heterocyclic compound features a pyridine ring with a hydroxyl group attached to the 4-position, making it a valuable intermediate in the synthesis of various pharmaceuticals, agrochemicals, and other chemical products. 4-Hydroxypyridine is used in the production of vitamin B3 (niacin) and its derivatives, as well as in the synthesis of certain dyes and pigments. Due to its reactivity, it is essential to handle 4-hydroxypyridine with care, as it can be harmful if inhaled, ingested, or absorbed through the skin.

426-64-2

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Basic information
1. Product Name: 4-HYDROXYPYRIDINE
2. Synonyms: 4-PYRIDOL;4-PYRIDONE;4HPY;4-(1H)-PYRIDONE;1,4-DIHYDRO-4-PYRIDINONE;G-PYRIDONE;TIMTEC-BB SBB005800
3. CAS NO:426-64-2
4. Molecular Formula: C5H5NO
5. Molecular Weight: 95.1
6. EINECS: 210-958-3
7. Product Categories: N/A
8. Mol File: 426-64-2.mol
Chemical Properties
1. Melting Point: 150-151 °C(lit.)
2. Boiling Point: 230-235 °C12 mm Hg(lit.)
3. Flash Point: N/A
4. Appearance: /
5. Density: 1.384±0.06 g/cm3(Predicted)
6. Refractive Index: N/A
7. Storage Temp.: N/A
8. Solubility: N/A
9. CAS DataBase Reference: 4-HYDROXYPYRIDINE(CAS DataBase Reference)
10. NIST Chemistry Reference: 4-HYDROXYPYRIDINE(426-64-2)
11. EPA Substance Registry System: 4-HYDROXYPYRIDINE(426-64-2)
Safety Data
1. Hazard Codes: Xi
2. Statements: 36/37/38
3. Safety Statements: 26-36
4. WGK Germany: 3
5. RTECS: UU7701450
6. F: 3-8-10
7. HazardClass: N/A
8. PackingGroup: N/A
9. Hazardous Substances Data: 426-64-2(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 426-64-2 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 4,2 and 6 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 426-64:
(5*4)+(4*2)+(3*6)+(2*6)+(1*4)=62
62 % 10 = 2
So 426-64-2 is a valid CAS Registry Number.

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