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499100-03-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 499100-03-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,9,9,1,0 and 0 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 499100-03:
157 % 10 = 7
So 499100-03-7 is a valid CAS Registry Number.

499100-03-7Upstream product

499100-03-7Relevant articles and documents

Chemoselective reduction of β-keto-esters to β-keto-alcohols

Isobe, Kimiaki,Mohri, Kunihiko,Sano, Hiromichi,Taga, Juni-ichi,Tsuda, Yoshisuke

, p. 3029 - 3032 (2007/10/02)

Chemoselective reduction of the ester group in keto-esters was studied.Treatment of potassium (or lithium) enolate anions of β-keto-esters with aluminium hydride reduced the ester group chemoselectvely to give β-keto-alcohols in moderate yield.Similar reactions of γ- and δ-keto-esters were not chemoselective, yielding a mixture of the diol and the keto-alcohol.Keywords - chemoselective reduction; aluminium hydride; β-keto-ester; β-keto-alcohol; potassium hydride; enolate anion.

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