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330961-77-8

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330961-77-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 330961-77-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,3,0,9,6 and 1 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 330961-77:
(8*3)+(7*3)+(6*0)+(5*9)+(4*6)+(3*1)+(2*7)+(1*7)=138
138 % 10 = 8
So 330961-77-8 is a valid CAS Registry Number.

330961-77-8Relevant articles and documents

Enantio- and diastereoselective michael reactions of silyl enol ethers and chalcones by catalysis using a chiral quaternary ammonium salt

Zhang, Fu-Yao,Corey

, p. 639 - 641 (2001)

(Matrix presented) N-(9-Anthracenylmethyl)dihydrocinchonidinium bromide (1) is an effective catalyst for enantioselective Michael additions to chalcones, as shown in the above example, using toluene/50% aqueous KOH biphasic conditions at -20°C.

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