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101765-69-9

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101765-69-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 101765-69-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,1,7,6 and 5 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 101765-69:
(8*1)+(7*0)+(6*1)+(5*7)+(4*6)+(3*5)+(2*6)+(1*9)=109
109 % 10 = 9
So 101765-69-9 is a valid CAS Registry Number.

101765-69-9Relevant articles and documents

1β-Methylcarbapenem intermediates via the thiolysis of a Meldrum's precursor

Jacopin, Christophe,Laurent, Mathieu,Belmans, Marc,Kemps, Luc,Cérésiat, Marcel,Marchand-Brynaert, Jacqueline

, p. 10383 - 10389 (2001)

5-{3-[1-(tert-Butyldimethylsilyloxy)ethyl]-4-oxo-azetidin-2-yl}-2,2,5- trimethyl-[1,3]dioxane-4,6-dione (3) has been submitted to nucleophilic attack with various nucleophiles. Meldrum's moiety transesterification, C4-substitution, β-lactam ring opening and Meldrum's moiety decarboxylation were observed. Reaction of 3 with ethanethiol and dimethylaminopyridine in ethanol quantitatively furnished ethyl 2-{3-[1-(tert-butyldimethylsilyloxy)ethyl]-4-oxo-azetidin-2-yl}- thiopropionate as the 1:1 mixture of β (7a) and α (8a) diastereoisomers.

2-Picolyl thioesters; A useful synthon for the preparation of 1-β-alkyl carbapenem intermediates

Martel,Daris,Bachand,Corbeil,Menard

, p. 1537 - 1539 (2007/10/02)

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Synthetic study of 1-substituted carbapenem antibiotics

Shibata,Iino,Tanaka,et al.

, p. 4739 - 4742 (2007/10/02)

Total synthesis of 1-substituted carbapenems is described. The key step is the reaction of acetoxyazetidinone with ketene silyl acetal.

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