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207131-20-2

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207131-20-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 207131-20-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,7,1,3 and 1 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 207131-20:
(8*2)+(7*0)+(6*7)+(5*1)+(4*3)+(3*1)+(2*2)+(1*0)=82
82 % 10 = 2
So 207131-20-2 is a valid CAS Registry Number.

207131-20-2Relevant articles and documents

A convenient synthesis of D-myo-inositol 1,4,5-trisphosphate (Ins(1,4,5)P3) and L-myo-inositol 1,4,5-trisphosphate (Ins(3,5,6)P3)

Leung, Lawrence W.,Bittman, Robert

, p. 171 - 179 (1997)

An efficient synthesis of an optically active inositol derivative that is a precursor to D-myo-inositol 1,4,5-trisphosphate (Ins(1,4,5)P3, (-)) is described. Crystallization of the diastereomers of (±) -1-O-[(+)- menthoxycarbonyl]-6-O-benzyl-2,3:4,5-di-O-isopropylidene-myo-inositol diastereomers from methanol gives only one diastereomer. Alkaline hydrolysis gives the useful inositol derivative (-)-6-O-benzyl-2,3:4,5-di-O- isopropylidene-myo-inositol. Likewise, crystallization of the diastereomers of (±)-3-O-[(-)-menthoxycarbonyl]-4-O-benzyl-1,2:5,6-di-O-isopropylidene- myo-inositol from methanol gave a pure compound which could be hydrolyzed to give (+)-4-O-benzyl-1,2:5,6-di-O-isopropylidene-myo-inositol, a precursor to D-myo-inositol 3,5,6-trisphosphate (Ins(3,5,6)P3, (+)). The ease with which these enantiomerically pure inositol derivatives were isolated may facilitate the synthesis of more complex inositol phosphate derivatives such as D-myo- inositol 1,3,4,5-tetrakisphosphate.

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