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Amygdalin, a compound isolated from the ...

Amygdalin, a compound isolated from the pits of apricots, peaches and wild cherries. Although it has no known therapeutic value, it has been used as unsanctioned anticancer drug. One hydrolysis product formed from Amygdalin is mandelic acid used in common skin problems.

Number of stereogenic centers present in (A)

A

10

B

12

C

11

D

13

Text Solution

Verified by Experts

The correct Answer is:
C
11
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Amygdalin, a compound isolated from the pits of apricots, peaches and wild cherries. Although it has no known therapeutic value, it has been used as unsanctioned anticancer drug. One hydrolysis product formed from Amygdalin is mandelic acid used in common skin problems. If [alpha] of solution of mandelic acid is + 50.56 , the ee% will be

Amygdalin, a compound isolated from the pits of apricots, peaches and wild cherries. Although it has no known therapeutic value, it has been used as unsanctioned anticancer drug. One hydrolysis product formed from Amygdalin is mandelic acid used in common skin problems. Pure (R)-mandelic acid has specific rotation of -154 and sample contains 60% of (R) isomer and 40 % of its enantiomer. [alpha] of mixture is

Knowledge Check

  • Ozone layer acts as one of the most important life support system. The major cause of ozone layer destruction is believed to be the release of chlorofluorocarbon compounds. UV radiation causes the chlorofluouocarbons to dissociate : CF_(2) Cl overset(hv)(rarr) Cl* +CF_(2) CI A highly reactive chlorine atomis responsible for the decomposition of ozone. Cl* + O_(3) (g) rarr ClO* + O_(2) (g) ClO* + O(g) rarr Cl* + O_(2) (g) Free radicals of chlorine decompose ozone molecules in a chain reaction. The depletion of ozone layer leading to ozone hole has, however, been mainly observed in the stratosphere over Antarctica. Special type of cloud called polar stratospheric colouds are formed over Antarctica.These clouds (contain solid HNO_(3).3H_(2)O ) play an important role in ozone depletion. ClO* + NO_(2) rarr ClONO_(2) ClONO_(2) + H_(2) O rarr HOCl + HNO_(3) ClONO_(2) + HCl rarr Cl_(2) + HNO_(3) HOCl overset(hv)(rarr) HO* + Cl* The reactive chlorine atoms thus formed are rendered to deplete ozone layer. Peeling of ozone umbrella, which protects us from UV rays is caused by:

    A
    PAN
    B
    `CO_(2)`
    C
    CFCs
    D
    coal burning
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