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131967-58-3

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131967-58-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 131967-58-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,9,6 and 7 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 131967-58:
(8*1)+(7*3)+(6*1)+(5*9)+(4*6)+(3*7)+(2*5)+(1*8)=143
143 % 10 = 3
So 131967-58-3 is a valid CAS Registry Number.

131967-58-3Downstream Products

131967-58-3Relevant articles and documents

Stereoselective synthesis of optically active 4-ethyl-3,5-dihydroxy-2- methylpentyl derivatives. A basic building block with three contiguous chiral centers of polyether antibiotics

Horita,Tanaka,Yonemitsu

, p. 2044 - 2046 (2007/10/02)

Optically active 4-ethyl-3,5-dihydroxy-2-methylpentyl derivatives, the iodide (4), phenyl sulfone (5), and phenyl sulfoxide (6), which are chiral synthons for an essential structural unit of polyether antibiotics, were stereoselectively synthesized starti

Total Synthesis of the Polyether Antibiotic Lysocellin. 2. Stereocontrolled Synthesis of the C10-C23 Fragment and Its Aldol Condensation with the C1-C9 Fragment to Complete the Total Synthesis of Lysocellin

Horita, Kiyoshi,Tanaka, Kazuhiro,Inoue, Takayuki,Yonemitsu, Osamu

, p. 5541 - 5544 (2007/10/02)

The C10-C23 ethyl ketone (4) was synthesized via coupling of the C16-C23 aldehyde (3) with the C11-C15 fragment (8), and subjected to the aldol reaction with the C1-C9 aldehyde (2) to complete the first stereoselective synthesis of the polyether antibioti

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