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1220987-46-1

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1220987-46-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1220987-46-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,2,0,9,8 and 7 respectively; the second part has 2 digits, 4 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1220987-46:
(9*1)+(8*2)+(7*2)+(6*0)+(5*9)+(4*8)+(3*7)+(2*4)+(1*6)=151
151 % 10 = 1
So 1220987-46-1 is a valid CAS Registry Number.

1220987-46-1Relevant articles and documents

Carbonyl umpolung reactivity of enals: NHC-catalyzed synthesis of aldol products via epoxide ring opening

Yadav, Lal Dhar S.,Singh, Santosh,Rai, Vijai K.

experimental part, p. 240 - 246 (2010/04/02)

A novel one-pot N-heterocyclic carbene catalyzed synthesis of aldol products and their application to a facile and highly cis-selective synthesis of tetrahydropyran-4-ones is reported. The protocol involves carbonyl umpolung reactivity of enals in which the carbonyl carbon attacks nucleophilically on electrophilic terminal epoxides, regioselectively, to afford aldol adducts in good to excellent yields. Georg Thieme Verlag Stuttgart - New York.

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