1334228-61-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1334228-61-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,3,4,2,2 and 8 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1334228-61:
(9*1)+(8*3)+(7*3)+(6*4)+(5*2)+(4*2)+(3*8)+(2*6)+(1*1)=133
133 % 10 = 3
So 1334228-61-3 is a valid CAS Registry Number.
1334228-61-3Relevant articles and documents
Efficient assembly of chromone skeleton from 2,3-allenoic acids and benzynes
Chai, Guobi,Qiu, Youai,Fu, Chunling,Ma, Shengming
, p. 5196 - 5199 (2011)
Chromone derivatives were synthesized from 2,3-allenoic acids and benzynes in moderate to excellent yields under mild conditions. Instead of the cyclic conjugate addition of the intermediate A formed by the nucleophilic addition of allenoic acid with benz
