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81819-14-9

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81819-14-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81819-14-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,8,1 and 9 respectively; the second part has 2 digits, 1 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 81819-14:
(7*8)+(6*1)+(5*8)+(4*1)+(3*9)+(2*1)+(1*4)=139
139 % 10 = 9
So 81819-14-9 is a valid CAS Registry Number.

81819-14-9Relevant articles and documents

Synthesis of extended oxazoles II: Reaction manifold of 2-(halomethyl)-4,5-diaryloxazoles

Patil, Pravin C.,Luzzio, Frederick A.

supporting information, p. 757 - 759 (2016/02/05)

2-(Halomethyl)-4,5-diphenyloxazoles are effective, reactive scaffolds which can be utilized for synthetic elaboration at the 2-position. Through substitution reactions, the chloromethyl analogue is used to prepare a number of 2-alkylamino-, 2-alkylthio-, and 2-alkoxy-(methyl) oxazoles. The 2-bromomethyl analogue offers a more reactive alternative to the chloromethyl compounds and is useful in the C-alkylation of a stabilized (malonate) carbanion as exemplified by a concise synthesis of Oxaprozin.

[2(4,5-diaryl-2 oxazoyl substituted phenoxy alkanoic acid and esters

-

, (2008/06/13)

Oxazole derivatives having Formula I or II are disclosed which are useful as inhibitors of mammalian blood platelet aggregation. STR1 Formula I and Formula XIX compounds are those wherein n is 7-9 and R is hydrogen or lower alkyl. Formula II compounds are those wherein R is hydrogen, lower alkyl or together with CO2 is tetrazol-1-yl; R1 is phenyl or thienyl; X is a divalent connecting group selected from the group consisting of CH2 CH2, CH=CH, and CH2 O; Y is a divalent connecting group attached to the 3 or 4 phenyl position selected from the group consisting of OCH2, CH2 CH2 and CH=CH. Formula XX compounds are those wherein the OCH2 CO2 R moiety is attached to the 3 or 4 phenyl position and R is hydrogen or lower alkyl.

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