117844-98-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 117844-98-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,7,8,4 and 4 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 117844-98:
(8*1)+(7*1)+(6*7)+(5*8)+(4*4)+(3*4)+(2*9)+(1*8)=151
151 % 10 = 1
So 117844-98-1 is a valid CAS Registry Number.
InChI:InChI=1/C12H14N2O2S/c1-7-11(14-12(13)17-7)9-5-4-8(15-2)6-10(9)16-3/h4-6H,1-3H3,(H2,13,14)
117844-98-1Relevant articles and documents
Acid Catalysed Condensation of Isoprene with Hydroxypropiophenones: Synthesis of 2,2-Dimethylchromans and Some New 2-Amino- and 2-Mercapto-4-aryl-5-methylthiazoles
Ahluwalia, V. K.,Nayal, Lalita,Bala, Shashi,Raghav, Sudha
, p. 629 - 632 (2007/10/02)
Condensation of hydroxypropiophenones with isoprene in the presence of orthophosphoric acid gives 3,4-dihydro-2,2-dimethylchromans (4a, 4b, 17 and 18) which have been used for the synthesis of some 2-amino-(7a, 7b, 12a and 12b) and 2-mercapto- (10a, 10b,