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40900-00-3

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40900-00-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 40900-00-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,0,9,0 and 0 respectively; the second part has 2 digits, 0 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 40900-00:
(7*4)+(6*0)+(5*9)+(4*0)+(3*0)+(2*0)+(1*0)=73
73 % 10 = 3
So 40900-00-3 is a valid CAS Registry Number.

40900-00-3Relevant articles and documents

Substrate-Controlled Regioselective Arylations of 2-Indolylmethanols with Indoles: Synthesis of Bis(indolyl)methane and 3,3′-Bisindole Derivatives

He, Ying-Ying,Sun, Xiao-Xue,Li, Guo-Hao,Mei, Guang-Jian,Shi, Feng

, p. 2462 - 2471 (2017)

A substrate-controlled regioselective arylation of 2-indolylmethanols with indoles has been established, which efficiently afforded bis(indolyl)methane and 3,3′-bisindole derivatives in high yields and with a broad substrate scope (up to 98% yield, 36 examples). This approach will not only provide an important strategy for the diversified synthesis of bis(indolyl)methane and 3,3′-bisindole derivatives but also serve as a good example for substrate-controlled regioselective reactions.

The N-tert-butylcarbamoyl directed metalation group for the regiospecific synthesis of 2-substituted pyrroles and indoles

Gharpure,Stoller,Bellamy,Firnau,Snieckus

, p. 1079 - 1082 (2007/10/02)

The N-tert-butylcarbamoyl serves as a useful, readily removable (LiOH/MeOH/THF) new directed metalation group for the synthesis of 2-substituted pyrroles and indoles.

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