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99333-60-5

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99333-60-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 99333-60-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,3,3 and 3 respectively; the second part has 2 digits, 6 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 99333-60:
(7*9)+(6*9)+(5*3)+(4*3)+(3*3)+(2*6)+(1*0)=165
165 % 10 = 5
So 99333-60-5 is a valid CAS Registry Number.

99333-60-5Relevant articles and documents

A contribution to the confusion surrounding the reaction of ketenes with imines to produce β-lactams. A comparison of stereoselectivity dependence on the method of ketene generation: Acid chloride/triethylamine vs photolysis of chromium-carbene complexes

Hegedus,Montgomery,Narukawa,Snustad

, p. 5784 - 5791 (2007/10/02)

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The asymmetric synthesis of β-lactam antibiotics. I. Application of chiral oxazolidones in the Staudinger Reaction

Evans,Sjogren

, p. 3783 - 3786 (2007/10/02)

The reactions of oxazolidone with N-benzylimines proceed with exceptional levels of asymmetric induction to form the cycloadducts. Subsequent dissolving metal reduction affords the homochiral β-lactam derivatives in good overall yield.

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