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98688-26-7

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98688-26-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 98688-26-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,8,6,8 and 8 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 98688-26:
(7*9)+(6*8)+(5*6)+(4*8)+(3*8)+(2*2)+(1*6)=207
207 % 10 = 7
So 98688-26-7 is a valid CAS Registry Number.

98688-26-7Relevant articles and documents

Selective Sequential Demasking of the Ester Functions of 1-Methyl-3,4,5-tris(methoxycarbonyl)pyrazole

Chambers, David,Denny, William A.,Buckleton, John S.,Clark, George R.

, p. 4736 - 4738 (2007/10/02)

The adjacent ester functions of 1-methyl-3,4,5-tris(methoxycarbonyl)pyrazole can be selectively and seqentially demasked, providing an efficient route to heterogeneous pyrazole triamides.X-ray crystallographic determination of the structure of one of these triamides shows the order of ester hydrolysis to be 5, 4, 3.

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