30697-69-9

Upstream product

• 108-24-7 acetic anhydride 
• 60-18-4 L-tyrosine 
• 5619-08-9 tyrosine ethyl ester hydrochloride 
• 34081-17-9 tyrosine ethyl ester 
• 64-17-5 ethanol 
• 537-55-3 N-acetyl-L-tyrosine 

Downstream Products

• 55739-04-3 N-acetyl-O-(7-nitro-benzo[1,2,5]oxadiazol-4-yl)-tyrosine ethyl ester 
• 7376-93-4 N-acetyl-D-tyrosine amide 
• 1003592-28-6 propyl N-acetyl-tyrosinate 
• 537-55-3 N-acetyl-L-tyrosine 
• 16720-61-9 N-acetyl-D-tyrosine ethyl ester 
• 1353566-01-4 C₁₉H₂₀N₄O₆ 
• 1353566-13-8 C₁₅H₁₈N₄O₃ 
• 94709-61-2 N-Acetyl-tyrosin-<2,4-dinitro-phenylhydrazid> 
• 96215-06-4 N-Acetyl-tyrosin-(N²-4--benzyliden-hydrazid) 
• 2381-07-9 N-acetyl-DL-tyrosine hydrazide 
• 10048-92-7 N-acetyl-tyrosinamide 

Relevant academic research and scientific papers

OPTIMIZATION OF THE ENZYMATIC SYNTHESIS OF AMINO ACID ESTERS. REACTION IN POLYPHASIC MEDIUM

N-acetyl-L-Tyrosine Ethyl Esters (ATEE) was synthesized from N-acetyl-L-Tyrosine and ethanol, with immobilized chymotrypsin as catalyst.For this purpose, a biphasic liquid reaction mixture consisting of an organic chloroform phase and aqueous phase was used.This system allows the shift of the reaction equilibrium towards ATEE synthesis by achieving continuous ATEE extraction in the organic phase.Synthesis rates of up to 90percent were obtained by optimizing the reaction conditions and controlling the pH of aqueous phase.

Resolution of N-protected amino acid esters using whole cells of Candida parapsilosis ATCC 7330

Whole cells of Candida parapsilosis ATCC 7330 were used for the resolution of N-acetyl amino acid esters. Excellent enantioselectivities (E = 40 to >500) were achieved for the resolution of N-protected protein and non-protein amino acid esters giving good yields (28-50%) and high enantiomeric excesses (up to >99%) for both enantiomers.

ANTI-ODOR COMPOSITIONS AND THERAPEUTIC USE

This application discloses a composition comprising a malodor compound and an anti-odor ingredient effective for reducing the presence or production of malodor. The composition may be topically applied to a subject and is useful for cosmetic conditions, pharmaceutical indications, or other objectives.

PROCESSES FOR MAKING THIAZOLIDINEDIONE DERIVATIVES AND COMPOUNDS THEREOF

A compound of the formula (I): wherein A represents a ring group connected to the oxygen atom by a C1 to C6 hydrocarbon chain, R is hydrogen or a C1-C4 alkyl, and Q is hydrogen, or an amine protecting group such as acetyl, trifluoroacetyl, benzoyl, benzyl, or trityl, is useful in making thiazolidinedione derivatives (formula (II)), such as pioglitazone, rosiglitazone and troglitazone.

Cosmetic sunscreen product for the face and body

Cosmetic sunscreen products which contain a tyrosine derivative of the formula: STR1 in which R1 is H or CH3 --(CH2)x, with X being 1 to 20, and R2 is CH3 CO-- or CH3 --(CH2)y --CO, with Y being 1 to 20, provide a long lasting and dark, natural tan after a short exposure to sunlight. The sunscreen product may contain an activator which is an alkali metal or alkaline earth metal salt of adenosine-5'-tri-, di-, or monophosphoric acid and mixtures thereof with an alkali metal or alkaline earth metal hydrogen phosphate.