이 원료는 다음의 구조를 갖는 치환된 지방족이알코올족 디올이다.

1,3-Propanediol, 2-bromo-2-nitro-: 2-Bromo-2-nitropropane-1,3-diol is an antimicrobial preservative that works by forming formaldehyde in cosmetic products. People exposed to such formaldehyde-releasing ingredients may develop a formaldehyde allergy or an allergy to the ingredient itself. In the U.S. approximately 20% of cosmetics and personal care products contain a formaldehyde-releaser and the frequency of contact allergy to these ingredients is much higher among Americans compared to studies in Europe.