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(2R,3S,4R)-2,4-dibenzyloxy-3-methylpentanoic acid is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

221885-33-2

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221885-33-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 221885-33-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,1,8,8 and 5 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 221885-33:
(8*2)+(7*2)+(6*1)+(5*8)+(4*8)+(3*5)+(2*3)+(1*3)=132
132 % 10 = 2
So 221885-33-2 is a valid CAS Registry Number.

221885-33-2Relevant academic research and scientific papers

Chemoenzymatic total synthesis of (+)-conagenin, a low-molecular-weight immunomodulator

Sano, Shigeki,Miwa, Toshio,Hayashi, Kazuhiko,Nozaki, Kazuo,Ozaki, Yohei,Nagao, Yoshimitsu

, p. 4029 - 4031 (2007/10/03)

Total synthesis of (+)-conagenin, a low-molecular-weight immunomodulator, was achieved based on enantioselective enzymatic reactions followed by chemoselective reductions.

Diastereo- and enantioselective formal synthesis of (+)-conagenin via asymmetric [2,3]-Wittig rearrangement

Enders, Dieter,Bartsch, Michael,Runsink, Jan

, p. 243 - 248 (2007/10/03)

The formal synthesis of the immunomodulator (+)-conagenin (1) is accomplished in a twelve-step sequence with good overall yield (19%), diastereoselectivity and enantiomeric excess (ds(syn) = 88%, ee = 91%). Key steps of the synthesis are the asymmetric [2

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