p-aminobenzoic acid

Substansi yang dibutuhkan untuk sintesa asam folat oleh organisme; juga mengabsorbsi cahaya dan digunakan (disebut juga asam aminobenzoat) sebagai pelindung matahari topikal. Disingkat PABA.

p-aminobenzoic acid (Wikipedia)
4-Aminobenzoic acid
Skeletal formula of PABA
Ball-and-stick model of the PABA molecule
Names
Preferred IUPAC name
4-Aminobenzoic acid
Other names
para-Aminobenzoic acid
p-Aminobenzoic acid
PABA
Vitamin B10
Vitamin Bx
Bacterial vitamin H1
Identifiers
3D model (Jmol)
ChEBI
ChemSpider
DrugBank
ECHA InfoCard 100.005.231
KEGG
UNII
Properties
C7H7NO2
Molar mass 137.14 g·mol−1
Appearance White-grey crystals
Density 1.374 g/mL
Melting point 187 to 189 °C (369 to 372 °F; 460 to 462 K)
Boiling point 340 °C (644 °F; 613 K)
1 g/170 mL (25 °C)
1 g/90 mL (90 °C)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

4-Aminobenzoic acid (also known as para-aminobenzoic acid or PABA because the number 4 carbon in the benzene ring is also known as the para position) is an organic compound with the formula H2NC6H4CO2H. PABA is a white solid, although commercial samples can appear gray. It is slightly soluble in water. It consists of a benzene ring substituted with amino and a carboxyl groups. The compound occurs naturally.