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27331-40-4

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27331-40-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 27331-40-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,7,3,3 and 1 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 27331-40:
(7*2)+(6*7)+(5*3)+(4*3)+(3*1)+(2*4)+(1*0)=94
94 % 10 = 4
So 27331-40-4 is a valid CAS Registry Number.

27331-40-4Downstream Products

27331-40-4Relevant articles and documents

Synthesis of naphthalene derivatives through inexpensive BF 3·Et2O-catalyzed annulation reaction of arylacetaldehydes with arylalkynes

Xiang, Shikai,Hu, Hao,Ma, Jing,Li, Yuanzhuo,Wang, Biqin,Feng, Chun,Zhao, Keqing,Hu, Ping,Chen, Xiaozhen

, p. 945 - 951 (2013/08/23)

An inexpensive BF3·Et2O-catalyzed annulation reaction of arylacetaldehydes with arylalkynes has been developed. Various substituted phenylacetaldehydes and phenylacetylenes can undergo this reaction, producing corresponding α-aryl su

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