Cas 20677-65-0,Acetoxymethyl-triphenyl-phosphoniumchlorid

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Check Digit Verification of cas no

The CAS Registry Mumber 20677-65-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,6,7 and 7 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 20677-65:
(7*2)+(6*0)+(5*6)+(4*7)+(3*7)+(2*6)+(1*5)=110
110 % 10 = 0
So 20677-65-0 is a valid CAS Registry Number.

20677-65-0Upstream product

20677-65-0Downstream Products

38872-49-0 4-acetoxy-1-chloro-2-methyl-2-butene

20677-65-0Relevant articles and documents

Preparation method of 4-acetoxy-2-methyl-2-butenal

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Paragraph 0014; 0042; 0045-0046; 0052; 0055-0056; 0062; ..., (2021/09/04)

The invention discloses a preparation method of 4-acetoxy-2-methyl-2-butenal, which takes salifying and wittig reactions as a core and methanol which is cheap and easy to obtain as a reaction initial raw material. The invention provides a new reaction route, the reaction steps are simple, the reaction conditions are mild, and the product yield is high.

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CAS

20677-65-0