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690997-04-7

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690997-04-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 690997-04-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,9,0,9,9 and 7 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 690997-04:
(8*6)+(7*9)+(6*0)+(5*9)+(4*9)+(3*7)+(2*0)+(1*4)=217
217 % 10 = 7
So 690997-04-7 is a valid CAS Registry Number.

690997-04-7Downstream Products

690997-04-7Relevant articles and documents

Bromotriphenylphosphonium salt promoted tandem one-pot cyclization to optically active 2-Aryl-1,3-oxazolines

Jiang, Haizhen,Yuan, Shijie,Wan, Wen,Yang, Kun,Deng, Hongmei,Hao, Jian

experimental part, p. 4227 - 4236 (2010/10/04)

Optically active 2-aryl-1,3-oxazolines, such as aromatic carbocycles, heterocycle-binding 4-benzyl (or phenyl)-1,3oxazolines and their 5-benzyl (or phenyl)-l,3-oxazoline isomers were successfully prepared through a bromotriphenylphosphonium salt promoted aziridine ring formation and ring opening sequential process involving tandem one pot cyclization of chiral 2-amino-3-phenylpropanol or 2amino-2-phenylethanol with various aromatic acids in toluene at 90 °C in moderate to excellent yields. The mechanism of this tandem process was also substantiated experimentally.

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