| 摘要 |
<p>An alkanamidocarboxybetaine of formula (I) or its salt, which is effective in stimulating hair growth of a mammal, wherein R1 represents an alkyl with 5 to 25 carbon atoms; R?2 and R3¿ represent each an alkyl with 1 to 4 carbon atoms; A represents an alkylene with 1 to 3 carbon atoms optionally substituted by methyl or hydroxyl; and m is an integer of 1 to 3.</p> |
