54957-21-0 Usage
Chemical structure
1,1-dimethyl-3-oxo-5-phenyl-2,3-dihydro-1H-pyrazol-1-ium
Functional groups
Pyrazole ring, positively charged nitrogen atom, carbonyl group, phenyl group
Molecular weight
206.2 g/mol
Appearance
Colorless to pale yellow crystalline solid
Solubility
Soluble in water, polar organic solvents like ethanol and acetone
Reactivity
Capable of undergoing esterification, nucleophilic addition, and cyclocondensation reactions
Applications
Used as a reagent in organic synthesis and as a building block in the preparation of pharmaceuticals, agrochemicals, and fine chemicals
Stability
Stable under normal conditions, but sensitive to strong acids and bases
Hazards
Corrosive, irritant, and harmful if inhaled, ingested, or comes into contact with skin
Storage
Store in a cool, dry, and well-ventilated area, away from strong acids and bases
Safety precautions
Wear protective clothing, gloves, and eye protection when handling; avoid inhalation and ingestion
Synonyms
2,2-Dimethyl-3-oxo-succinic acid monomethyl ester, 3-Oxobutanedioic acid, monomethyl ester, dimethyl ester, 2,2-dimethyl-, 1-phenylhydrazide, 1,1-dimethyl-3-oxo-5-phenyl-2,3-dihydro-1H-pyrazol-1-ium
Chemical classification
Heterocycle, organic compound, ester, and reagent
Check Digit Verification of cas no
The CAS Registry Mumber 54957-21-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,4,9,5 and 7 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 54957-21:
(7*5)+(6*4)+(5*9)+(4*5)+(3*7)+(2*2)+(1*1)=150
150 % 10 = 0
So 54957-21-0 is a valid CAS Registry Number.
