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4697-98-7

5-O-benzyl-1,2:3,4-di-O-isopropylidene-L-rhamnitol is a complex organic compound with the molecular formula C20H28O5. It is a derivative of L-rhamnitol, a naturally occurring sugar alcohol, where the hydroxyl groups at positions 1, 2, 3, and 4 are protected by isopropylidene groups, and the hydroxyl group at position 5 is substituted with a benzyl group. 5-O-benzyl-1,2:3,4-di-O-isopropylidene-L-rhamnitol is often used in organic synthesis, particularly in the preparation of complex carbohydrates and glycoconjugates, due to its ability to protect certain functional groups while allowing others to react. The isopropylidene protection is a common strategy to prevent unwanted side reactions at the hydroxyl groups, while the benzyl group can be used to control the stereochemistry of the molecule or to facilitate purification steps. 5-O-benzyl-1,2:3,4-di-O-isopropylidene-L-rhamnitol is a valuable intermediate in the synthesis of various biologically active molecules and pharmaceuticals, highlighting its importance in the field of medicinal chemistry.

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4697-98-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 4697-98-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,6,9 and 7 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 4697-98:
(6*4)+(5*6)+(4*9)+(3*7)+(2*9)+(1*8)=137
137 % 10 = 7
So 4697-98-7 is a valid CAS Registry Number.

4697-98-7Relevant articles and documents

Synthesis of Inhibitors of Adenosine Deaminase. A Total Synthesis of erythro-3-(Adenin-9-yl)-2-nonanol and Its Isomers from Chiral Precursors

Baker, David C.,Hawkins, L. D.

, p. 2179 - 2184 (1982)

The synthesis of both isomers of EHNA2 ("erythrohydroxynonyladenine") from D- and L-rhamnose is described.The key intermediates, (R)- and (S)-2-(benzyloxy)propanal, derived respectively from 5-O-benzyl-D- and -L-rhamnitol, were each condensed w

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