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91907-61-8

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91907-61-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 91907-61-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,9,0 and 7 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 91907-61:
(7*9)+(6*1)+(5*9)+(4*0)+(3*7)+(2*6)+(1*1)=148
148 % 10 = 8
So 91907-61-8 is a valid CAS Registry Number.

91907-61-8Relevant articles and documents

A facile synthesis of 2-phosphoryl-substituted 3-hydroxyindole derivatives

Couture,Deniau,Grandclaudon

, p. 1276 - 1279 (2007/10/02)

A variety of 1-substituted 2-diphenylphosphinoyl-3-hydroxy-1H-indoles 5 a-d and 2-dimethoxyphosphoryl-3-hydroxy-1H-indoles 6a,c have been efficiently prepared by base-induced intramolecular cyclization of the appropriate Horner-Wittig and Wadsworth-Emmons reagents, 2-[(diphenylphosphinoyl)methylamino]-N,N-diethylbenzamides 3a-d and 2-[(dimethoxyphosphoryl)methylamino]-N,N-diethylbenzamides 4a,c, respectively.

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