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121836-01-9

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121836-01-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 121836-01-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,8,3 and 6 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 121836-01:
(8*1)+(7*2)+(6*1)+(5*8)+(4*3)+(3*6)+(2*0)+(1*1)=99
99 % 10 = 9
So 121836-01-9 is a valid CAS Registry Number.

121836-01-9Relevant articles and documents

The Synthesis of (R)-2',3'-Dihydroxypropyl 5-Deoxy-5-dimethylarsinyl-β-D-riboside, a Naturally Occurring Arsenic-Containing Carbohydrate

McAdam, David P.,Perera, Anna M. A.,Stick, Robert V.

, p. 1901 - 1908 (2007/10/02)

The synthesis of the title compound, isolated from the brown kelp (Ecklonia radiata) or the giant clam (Tridacna maxima), is reported.Glycosidation of 1-O-acetyl-2,3,5-tri-O-benzoyl-β-D-ribose, either directly with (S)-1,2-di-O-benzylglycerol or via the derived orthoester with (S)-1,2-O-isopropylideneglycerol, led to two fully protected glycerol β-D-ribofuranosides.Subsequent chemical manipulations led to a common intermediate having a free hydroxy group at C 5 of the D-ribose residue.Replacement of this hydroxy group by a chlorine atom allowed the introduction of the dimethylarsinyl group at C 5 in a two-step procedure, and removal of protecting groups provided the natural product.

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