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87657-60-1

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87657-60-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 87657-60-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,6,5 and 7 respectively; the second part has 2 digits, 6 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 87657-60:
(7*8)+(6*7)+(5*6)+(4*5)+(3*7)+(2*6)+(1*0)=181
181 % 10 = 1
So 87657-60-1 is a valid CAS Registry Number.

87657-60-1Downstream Products

87657-60-1Relevant articles and documents

Stereoselective Synthesis of Cis-Substituted Azetidinones from Penicillin: a Formal Total Synthesis of Loracarbef

Deeter, Jack B.,Hall, David A.,Jordan, Christopher L.,Justice, Richard M.,Kinnick, Michael D.,et al.

, p. 3051 - 3054 (2007/10/02)

A new method for the synthesis of chiral azetidinones bearing a carbon-carbon bond at the 4-position is described.The preparation involves a stereoselective alkylation-reduction of a silylated 4-phenylsulfonyl azetidinone.The utility of this method was demonstrated by a formal total synthesis of loracarbef.

STUDIES ON THE REACTIVITY OF 4-ACETOXY-3-ACYLAMINO-2-AZETIDINONES: STEREOSPECIFIC trans CARBON-CARBON BOND FORMATION

Bevilacqua, Pat,Roberts, John L.

, p. 797 - 808 (2007/10/02)

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