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1189774-61-5

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1189774-61-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1189774-61-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,8,9,7,7 and 4 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1189774-61:
(9*1)+(8*1)+(7*8)+(6*9)+(5*7)+(4*7)+(3*4)+(2*6)+(1*1)=215
215 % 10 = 5
So 1189774-61-5 is a valid CAS Registry Number.

1189774-61-5Relevant articles and documents

N-Heterocyclic carbene-catalyzed cascade epoxide-opening and lactonization reaction for the synthesis of dihydropyrone derivatives

Qi, Jing,Xie, Xingang,He, Jinmei,Zhang, Ling,Ma, Donghui,She, Xuegong

, p. 5948 - 5950 (2011)

N-Heterocyclic carbene was employed as an efficient organic catalyst to catalyze a cascade epoxide-opening and lactonization reaction. This organocatalytic process could transform various readily accessible γ-epoxy-α,β-enals into dihydropyrone derivatives in good to excellent yields.

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