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1426679-83-5

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1426679-83-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1426679-83-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,2,6,6,7 and 9 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1426679-83:
(9*1)+(8*4)+(7*2)+(6*6)+(5*6)+(4*7)+(3*9)+(2*8)+(1*3)=195
195 % 10 = 5
So 1426679-83-5 is a valid CAS Registry Number.

1426679-83-5Downstream Products

1426679-83-5Relevant articles and documents

The mukaiyama type aldol reaction for the synthesis of: Trans-2,6-disubstituted tetrahydropyrans: Synthesis of diospongin a and b

Bharath, Yada,Choudhury, Utkal Mani,Sadhana,Mohapatra, Debendra K.

, p. 9169 - 9181 (2019/11/05)

An efficient synthesis protocol for the preparation of trans-2,6-disubstituted tetrahydropyrans by the reaction of 1-phenyl-1-triemthylsiloxyethylene with six membered cyclic hemiacetals in the presence of iodine is developed. This reaction proceeds smoothly under mild conditions employing a catalytic amount of molecular iodine. The feature of this novel conversion includes milder reaction conditions, broader substrate scope, functional group tolerance and good diastereoselectivity. The efficiency and practicality of the current method were successfully displayed in the total synthesis of diospongin A and B in good yields.

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