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690669-00-2

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690669-00-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 690669-00-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,9,0,6,6 and 9 respectively; the second part has 2 digits, 0 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 690669-00:
(8*6)+(7*9)+(6*0)+(5*6)+(4*6)+(3*9)+(2*0)+(1*0)=192
192 % 10 = 2
So 690669-00-2 is a valid CAS Registry Number.

690669-00-2Downstream Products

690669-00-2Relevant articles and documents

Parallel synthesis of 1,2,4-oxadiazoles from carboxylic acids using an improved, uronium-based, activation

Poulain, Rébecca F.,Tartar, André L.,Déprez, Benot P.

, p. 1495 - 1498 (2007/10/03)

We describe the synthesis of 1,2,4-oxadiazoles from carboxylic acids and amidoximes using 2-(1H-benzotriazole-1-yl)-1,1,3,3-tetramethyluronium tetrafluoroborate (TBTU) as an activating agent of the carboxylic acid function for the O-acylation step. This method was used for the synthesis of a library of 24 1,2,4-oxadiazoles.

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