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Tagalose is a functional sweetener and can be found in milk in small amounts. Commercially, Tagalose is produced from lactose, whereby galactose is isomerized under alkaline conditions to D-tagatose (shown below) by calcium hydroxide. Based on the Fischer projection, which of the following wedge-dash structures correctly represents D-tagatose?
- a)
- b)
- c)
- d)
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Tagalose is a functional sweetener and can be found in milk in small a...
- There are two rules of thumb when dealing with Fischer projections of carbohydrates: when the hydroxyl group is on the right, the configuration is R, and when it is on the left, the configuration is S.
- For tagalose, the configurations are as follow: S, S, and R, starting from C-3.
- The second rule applies to all Fischer projections. For the sugar ribose, with all of its hydroxyl groups on the R in its Fischer projection, the hydroxyl groups alternate between dash and wedge:
- Without having to determine the R/S configuration for any stereocenter. On adjacent stereocenters, when the configurations are the same, such as S, S or R, R, there is a switch from dash to wedge or wedge to dash. So if the configurations change, such as R, S or S, R, there are both dashes or wedges.
- Following that logic, this structure must be the correct answer:
Most Upvoted Answer
Tagalose is a functional sweetener and can be found in milk in small a...
- There are two rules of thumb when dealing with Fischer projections of carbohydrates: when the hydroxyl group is on the right, the configuration is R, and when it is on the left, the configuration is S.
- For tagalose, the configurations are as follow: S, S, and R, starting from C-3.
- The second rule applies to all Fischer projections. For the sugar ribose, with all of its hydroxyl groups on the R in its Fischer projection, the hydroxyl groups alternate between dash and wedge:
- Without having to determine the R/S configuration for any stereocenter. On adjacent stereocenters, when the configurations are the same, such as S, S or R, R, there is a switch from dash to wedge or wedge to dash. So if the configurations change, such as R, S or S, R, there are both dashes or wedges.
- Following that logic, this structure must be the correct answer:
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Tagalose is a functional sweetener and can be found in milk in small amounts. Commercially, Tagalose is produced from lactose, whereby galactose is isomerized under alkaline conditions to D-tagatose (shown below) by calcium hydroxide. Based on the Fischer projection, which of the following wedge-dash structures correctly represents D-tagatose?a)b)c)d)Correct answer is option 'D'. Can you explain this answer? for MCAT 2026 is part of MCAT preparation. The Question and answers have been prepared according to the MCAT exam syllabus. Information about Tagalose is a functional sweetener and can be found in milk in small amounts. Commercially, Tagalose is produced from lactose, whereby galactose is isomerized under alkaline conditions to D-tagatose (shown below) by calcium hydroxide. Based on the Fischer projection, which of the following wedge-dash structures correctly represents D-tagatose?a)b)c)d)Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for MCAT 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Tagalose is a functional sweetener and can be found in milk in small amounts. Commercially, Tagalose is produced from lactose, whereby galactose is isomerized under alkaline conditions to D-tagatose (shown below) by calcium hydroxide. Based on the Fischer projection, which of the following wedge-dash structures correctly represents D-tagatose?a)b)c)d)Correct answer is option 'D'. Can you explain this answer?.
Tagalose is a functional sweetener and can be found in milk in small amounts. Commercially, Tagalose is produced from lactose, whereby galactose is isomerized under alkaline conditions to D-tagatose (shown below) by calcium hydroxide. Based on the Fischer projection, which of the following wedge-dash structures correctly represents D-tagatose?a)b)c)d)Correct answer is option 'D'. Can you explain this answer? for MCAT 2026 is part of MCAT preparation. The Question and answers have been prepared according to the MCAT exam syllabus. Information about Tagalose is a functional sweetener and can be found in milk in small amounts. Commercially, Tagalose is produced from lactose, whereby galactose is isomerized under alkaline conditions to D-tagatose (shown below) by calcium hydroxide. Based on the Fischer projection, which of the following wedge-dash structures correctly represents D-tagatose?a)b)c)d)Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for MCAT 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Tagalose is a functional sweetener and can be found in milk in small amounts. Commercially, Tagalose is produced from lactose, whereby galactose is isomerized under alkaline conditions to D-tagatose (shown below) by calcium hydroxide. Based on the Fischer projection, which of the following wedge-dash structures correctly represents D-tagatose?a)b)c)d)Correct answer is option 'D'. Can you explain this answer?.
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