Robuta

https://www.sigmaaldrich.com/US/en/product/sial/55823 trans-p-Coumaric acid analytical standard 501-98-4 trans-p-Coumaric acid analytical standard; CAS Number: 501-98-4; Synonyms: p-Coumaric acid,trans-4-Hydroxycinnamic acid; Linear Formula: HOC6H4CH=CHCO2H at... trans p coumaric acidanalytical standard501984