Choose the correct structure for thiamine hydrochloride at pH 3. H3C H3C NH₂ NH₂ CI- A CI- с CH3 CH3 HCI -OH OO N H3C H3C 'N NH3 N NH₂ CI- B D CH3 CH3 HCI OH OH
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- Choose the correct structure for thiamine hydrochloride at pH 10. H3C H3C N NH₂ NH₂ CI- A CI- с CH3 CH3 HCI -OH OO H3C H3C N NH3 NH₂ CI- B D CH3 S CH3 S HCI OH -OHWhich of the following is least soluble in hexane? * COOH A^ А B с E D FM COOH COOH COOH COOH 1 p COOHAn incomplete structure of a porphyrin ring is shown below. The structure is missing three pi bonds and does not show the non-zero formal charges on two atoms. Complete the structure of the porphyrin ring with the missing pi bonds and formal charges. 0 0 +t DC 12⁰ H C N O S F P Cl Br I
- In the following monosaccharide hemiacetal, identify the anomeric carbon atom. Identify the appropriate atom by selecting an atom and assigning it a map number of 1. To do this, rigl mark to enable the Map field before entering a value. H: 122 EXP" CONT. 0 0 H но OH S Br OH [1] ÓH P. -Classify the following lipid (choose all that apply). HO, O wax ester O cis alkene(s) O steroid fatty acid O omega-6 O saturated O monounsaturated O omega-3 O triglyceride O polyunsaturated O trans alkene(s) O OIdentify the conjugate acids and bases in the following pairs of substances. (CH3)3NH / (CH3)3N *H3NCH2CH,C00 / H2NCH;CH2COO OOCCH,COOH/ 00CCH2CO0
- Consider the following dipeptides: AC HE TG LR VK How many of the dipeptides in this group that would stick to an anion exchange column at pH-8? Please give me the whole number as the answer, 0, 1, 2 etc Amino Acid pKac pKaN pKaR 9.8 9.9 97 2.4 Glycine Alanine 23 Valios 222Compound P was discovered by a scientist. Compound P is a dipeptide, optically active and has the molecular formula C„H14N2O3. Compound P is formed when compound Q and compound R joined together by condensation reaction. While, monomers S and T are formed by modifying the compounds Q and R. Polymer U is formed by the condensation reaction of monomers S and T. Draw the possible structural formulae of compounds P, Q, R, S, T and U. Label the peptide bond(s) for compound P. Draw the possible structural formulae for repeating unit of polymer U. Please state the number of functional groups present in compound P.Draw the enantiomer structure of the following given carbohydrates. Be sure to include appropriate D or L specification.
- Determine the number of possible stereoisomers for the fol- lowing compounds: CH,OH C=0 CH,OH Но-с—н C=0 H-C-OH H-C-OH H-C-OH H-C-OH H-C-OH CH,OH CH,OH Ribulose Sedoheptulosea) Use the carbonyl group, number of carbons, and type of stereochemistry (D or L) to classify the following monosaccharides. CH2OH O: CHO I но -H- HO- но -H- HOCH2 HO- -O- CH2OH H- OH CH2OH i.Compound A is a(n with stereochemistry. ii.Compound B is a(n) with stereochemistry.H HN-C-C-OH H-C-CH, CH2 CH3 The following short passage is about the compound with chemical structure shown above. Use the following word bank to fill in the blanks in the passage. NOTE that some options may be used more than once: functional, L-serine, nonpolar, two, carboxyl, ketone, optimally, hydroxyl, three polar, neutral, methyl, L-isoleucine, four, amino, carbonyl, L-threonine, acidic, one, aldehyde, hydroxide, amine, D-threonine, asymmetrical, optically, D-serine basic, D-isoleucine, 2-hydroxybutanoic acid, L-glutamic acid, five, ionisable active compound with a maximum number of chiral carbon(s) Its is an example of a(n) chemical structure also contains a maximum number of ionisable group(s) at physiological pH. While the presence of a(n) group gives the compound its partial acidic properties group makes this compound nonpolar, the presence of a(n)