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660451-20-7

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660451-20-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 660451-20-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,0,4,5 and 1 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 660451-20:
(8*6)+(7*6)+(6*0)+(5*4)+(4*5)+(3*1)+(2*2)+(1*0)=137
137 % 10 = 7
So 660451-20-7 is a valid CAS Registry Number.

660451-20-7Relevant articles and documents

FUSED HETEROCYCLIC COMPOUNDS

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Page 192-193, (2008/06/13)

A compound represented by the formula wherein ring A is an optionally substituted 5- to 10-membered aromatic ring; R1 and R2 are the same or different and each is an optionally substituted hydrocarbon group or an optionally substituted heterocyclic group; X and Y are the same or different and each is a bond, -O-, -S-, -SO-, -SO?2#191- or -NR3- (R3 is a hydrogen atom or an optionally substituted hydrocarbon group); and L is a divalent hydrocarbon group, or a salt thereof shows a superior peptidase-inhibitory activity and is useful as a prophylactic or therapeutic agent of diabetes and the like.

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