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177981-77-0

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177981-77-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 177981-77-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,7,9,8 and 1 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 177981-77:
(8*1)+(7*7)+(6*7)+(5*9)+(4*8)+(3*1)+(2*7)+(1*7)=200
200 % 10 = 0
So 177981-77-0 is a valid CAS Registry Number.

177981-77-0Downstream Products

177981-77-0Relevant articles and documents

Enantioselective syntheses and resolution of the key White intermediate for the synthesis of trisporic acids

Bacigaluppo, Jose A.,Colombo, Maria I.,Preite, Marcelo D.,Zinczuk, Juan,Ruveda, Edmundo A.,Sieler, Joachim

, p. 1041 - 1057 (2007/10/03)

Two asymmetric syntheses of the alkylated cyclohexenone carboxylic acid moiety, the key White intermediate (4a), of trisporic acids A, B and C are described. The syntheses feature a Michael addition in tandem with an aldol condensation as the central step

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