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128019-71-6

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128019-71-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 128019-71-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,0,1 and 9 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 128019-71:
(8*1)+(7*2)+(6*8)+(5*0)+(4*1)+(3*9)+(2*7)+(1*1)=116
116 % 10 = 6
So 128019-71-6 is a valid CAS Registry Number.

128019-71-6Downstream Products

128019-71-6Relevant articles and documents

Amino acid derivatives

-

, (2008/06/13)

Compounds of the formula STR1 wherein R1 is alkoxycarbonyl, aralkoxycarbonyl, alkanoyl, cycloalkylcarbonyl, aralkanoyl, aroyl, heterocyclylcarbonyl, alkylsulphonyl, arylsulphonyl, monoaralkylcarbamoyl, cinnamoyl or α-aralkoxycarbonylaminoalkanoyl and R2 is hydrogen or R1 and R2 together with the nitrogen atom to which they are attached represent a cyclic imide group of the formula STR2 in which P and Q together represent an aromatic system; R3 is alkyl, cycloalkyl, aryl, aralkyl, heterocyclylalkyl, cyanoalkyl, alkyl- sulphinylalkyl, carbamoylalkyl or alkoxycarbonylalkyl or, when n stands for zero, R3 can also represent alkylthioalkyl or, when n stands for 1, R3 can also represent alkylsulphonylalkyl; R4 is alkyl, cycloalkyl, cycloalkylalkyl, aryl or aralkyl; R5 is hydrogen and R6 is hydroxy or R5 and R6 together represent oxo; R7 and R8 together represent a trimethylene or tetramethylene group which is optionally substituted by hydroxy, alkoxycarbonylamino or acylamino or in which one --CH2 -- group is replaced by --NH--, --N(alkoxycar- bonyl)--, --N(alkyl)-- or --S-- or which carries a fused cycloalkane, aromatic or heteroaromatic ring; and R9 is alkoxycarbonyl, monoalkylcarbamoyl, monoaralkylcarbamoyl, monoarylcarbamoyl or a group of the formula STR3 in which R10 and R11 each represent alkyl; and their pharmaceutically acceptable acid addition salts inhibit proteases of viral origin and can be used as medicaments for the treatment or prophylaxis of viral infections. They can be manufactured according to generally known procedures.

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