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193292-90-9

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193292-90-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 193292-90-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,3,2,9 and 2 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 193292-90:
(8*1)+(7*9)+(6*3)+(5*2)+(4*9)+(3*2)+(2*9)+(1*0)=159
159 % 10 = 9
So 193292-90-9 is a valid CAS Registry Number.

193292-90-9Relevant articles and documents

Total synthesis of Δ12-PGJ2, 15-deoxy-Δ12,14-PGJ2, and related compounds

Acharya, Hukum P.,Kobayashi, Yuichi

, p. 1199 - 1202 (2007/10/03)

A key cyclopentenone possessing the α-chain was synthesized from TBS ether of 4-cyclopentene-1,3-diol monoacetate, and submitted to aldol reaction at the α′-position with the ω-chain aldehydes followed by dehydration to produce the title compounds. In a similar manner, 5-dehydro compounds (acetylene analogues) were synthesized successfully. In addition, palladium-catalyzed reaction of 4-cyclopentene-1,3-diol monoacetate with methyl malonate, the first step of the synthesis, was improved to afford the product in high yield by using t-BuOK or LDA in place of NaH.

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