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896104-91-9

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896104-91-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 896104-91-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,9,6,1,0 and 4 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 896104-91:
(8*8)+(7*9)+(6*6)+(5*1)+(4*0)+(3*4)+(2*9)+(1*1)=199
199 % 10 = 9
So 896104-91-9 is a valid CAS Registry Number.

896104-91-9Upstream product

896104-91-9Downstream Products

896104-91-9Relevant articles and documents

A synthetic approach toward nitiol: Construction of two 1,22-dihydroxynitianes

Wilson, Michael S.,Woo, Jacqueline C. S.,Dake, Gregory R.

, p. 4237 - 4245 (2007/10/03)

Synthetic work toward the total synthesis of nitiol has culminated in the construction of two epimeric hydroxylated derivatives, the 1,22- dihydroxynitianes. Key stereodefining steps in the construction of the A-ring fragment (13) were the use of a siloxy-epoxide rearrangement reaction, a Pauson-Khand reaction, a Norrish 1 photochemical cleavage reaction, and a highly regio- and stereoselective hydrostannylation reaction of an ynoate. The stereochemistry of the synthetically challenging C-ring fragment (20) was established using an Ireland-Claisen reaction and a Grubbs ring-closing metathesis process as key steps. The 12-membered B-ring of the nitiane skeleton was constructed using a copper-promoted Stille cross-coupling and a Kishi-Hiyama-Nozaki carbonyl addition reaction. Unfortunately, the carbonyl addition reaction produced hydroxyl functionality that could not be selectively removed. Consequently, a synthesis of epimeric 1,22-dihydroxynitianes, which are compounds that are structural hybrids of two natural products, nitiol and variculanol, was completed.

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