197570-89-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 197570-89-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,7,5,7 and 0 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 197570-89:
(8*1)+(7*9)+(6*7)+(5*5)+(4*7)+(3*0)+(2*8)+(1*9)=191
191 % 10 = 1
So 197570-89-1 is a valid CAS Registry Number.
197570-89-1Relevant articles and documents
SELECTIVE ACYLATION OF 4-SUBSTITUTED-1,3-PHENYLENEDIAMINE
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Page/Page column 3, (2009/09/07)
This invention is directed to a method of selectively acylating a compound of formula (II): (II), wherein: R1 is NO2, —N+R33, trihalomethyl, —CN, —SO3H, —CO2H, —CO2 R
