4-(Dimethylamino)benzoic Acid
Structural Formula Vector Image
Title: 4-(Dimethylamino)benzoic Acid
CAS Registry Number: 619-84-1
Molecular Formula: C9H11NO2
Molecular Weight: 165.19
Percent Composition: C 65.44%, H 6.71%, N 8.48%, O 19.37%
Literature References: Prepn: Willstätter, Kahn, Ber. 37, 411 (1904); Morton, Stevens, J. Am. Chem. Soc. 53, 4028, 4031 (1931); Gilman, Banner, ibid. 62, 344 (1940); Bowman, Stroud, J. Chem. Soc. 1950, 1342. Use of esters as sunscreening agents: Kreps, Ohlsson, US 3403207 (1968); Worthington, GB 1162337 and FR 1566396 (both 1969 to Van Dyk).
Properties: Crystals from water, mp 242.5-243.5°. Soluble in alcohol, HCl and KOH solns, sparingly sol in ether. Practically insol in acetic acid. pKa 6.027; pKb 11.488.
Melting point: mp 242.5-243.5°
pKa: pKa 6.027; pKb 11.488
 
Derivative Type: 3-Methylbutyl ester
CAS Registry Number: 21245-01-2
Additional Names: Padimate A
Trademarks: Escalol 506 (Van Dyk)
Molecular Formula: C14H21NO2
Molecular Weight: 235.32
Percent Composition: C 71.46%, H 8.99%, N 5.95%, O 13.60%
 
Derivative Type: 2-Ethylhexyl ester
CAS Registry Number: 21245-02-3
Additional Names: Padimate O
Trademarks: Escalol 507 (Van Dyk); Sundown
Molecular Formula: C17H27NO2
Molecular Weight: 277.40
Percent Composition: C 73.61%, H 9.81%, N 5.05%, O 11.54%
 
Derivative Type: Glyceryl ester see Glyceryl p-Aminobenzoate
 
Therap-Cat: Esters as ultraviolet screen.
Keywords: Ultraviolet Screen.

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