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10503-37-4

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10503-37-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 10503-37-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,0,5,0 and 3 respectively; the second part has 2 digits, 3 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 10503-37:
(7*1)+(6*0)+(5*5)+(4*0)+(3*3)+(2*3)+(1*7)=54
54 % 10 = 4
So 10503-37-4 is a valid CAS Registry Number.

10503-37-4Relevant articles and documents

Observations on the generation of organozinc carbenoids from acetals and ketals

Motherwell, William B.,O'Mahony, Donogh J.R.,Popkin, Matthew E.

, p. 5285 - 5288 (1998)

The use of acetals and ketals as direct precursors for organozinc carbenoid chemistry is illustrated by their direct conversion to alkenes in a one pot operation. Aryl acetals can also be used as precursors for the cyclopropanation of cyclohexene.

A Practical Cyclopropanation Method using Direct Generation of Organozinc Carbenoids from Carbonyl Compounds

Motherwell, William B.,Roberts, Lee R.

, p. 1582 - 1583 (2007/10/02)

A variety of readily available aryl and α,β-unsaturated carbonyl compounds, on treatment with zinc and 1,2-bis(chlorodimethylsilyl)ethane, afforded organozinc carbenoids which may be trapped with alkenes to give cyclopropanes.

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