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137777-30-1

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137777-30-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 137777-30-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,7,7 and 7 respectively; the second part has 2 digits, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 137777-30:
(8*1)+(7*3)+(6*7)+(5*7)+(4*7)+(3*7)+(2*3)+(1*0)=161
161 % 10 = 1
So 137777-30-1 is a valid CAS Registry Number.

137777-30-1Downstream Products

137777-30-1Relevant articles and documents

Reactivity of in situ Generated Dihalomethyllithium towards Dicarboxylic Acid Diesters and Lactones: Synthetic Applications

Barluenga, Jose,Llavona, Lujan,Yus, Miguel,Concellon, Jose M.

, p. 7875 - 7886 (1991)

The reaction of dicarboxylic acid diesters 1, with in situ generated dihalomethyllithium (1:1.4 molar ratio) at -78 deg C leads, after hydrolysis, to the corresponding dihalomethylketoesters 3.The same process using an excess of the carbenoid (1:4 molar r

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