Cas 67083-03-8,methyl 5-oxo-2-(triphenylphosphoranylidene)hex-3-enoate

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Check Digit Verification of cas no

The CAS Registry Mumber 67083-03-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,7,0,8 and 3 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 67083-03:
(7*6)+(6*7)+(5*0)+(4*8)+(3*3)+(2*0)+(1*3)=128
128 % 10 = 8
So 67083-03-8 is a valid CAS Registry Number.

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67083-03-8Relevant academic research and scientific papers

Simple Synthesis of Dimethyl 4-Methyl-6-perfluoroalkylisophthalates and Dimethyl 5-Perfluoroalkylbiphenyl-2,4-dicarboxylates via Acyclic Precursors

Weiyu, Ding,Weiguo, Cao,Zhenrong, Xu,Yuan, Yao,Zhijian, Shi,Zhiheng, Han

, p. 855 - 858 (2007/10/02)

Reaction of methyl propynoate 2 with acetylmethylenetriphenylphosphorane 1a or benzoylmethylenetriphenylphosphorane 1b at 90 deg C gives methyl 5-oxo-2-(triphenylphosphoranylidene)hex-3-enoate 4a or methyl 4-benzoyl-2-(triphenylphosphoranylidene)but-3-eno

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