121239-18-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 121239-18-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,2,3 and 9 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 121239-18:
(8*1)+(7*2)+(6*1)+(5*2)+(4*3)+(3*9)+(2*1)+(1*8)=87
87 % 10 = 7
So 121239-18-7 is a valid CAS Registry Number.
121239-18-7Relevant articles and documents
REACTION OF ORGANIC AZIDES WITH UNSATURATED COMPOUNDS. X. N-ARYLSULFONYLCARBOXIMIDIC ESTERS
Semenov, V. P.,Ogloblin, K. A.
, p. 2154 - 2161 (2007/10/02)
N-Arylsulfonylcarboximidic esters were obtained in the reaction of arenesulfonyl azides with 1-methoxypropene, 2-methyl-1-methoxypropene, 1-alkoxycyclohexenes, and 3,3,5,5-tetramethyl-1-ethoxycyclohexene.Hydrolysis of the imidic esters gave N-arylsulfonyl
