1138320-91-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1138320-91-8 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,3,8,3,2 and 0 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1138320-91:
(9*1)+(8*1)+(7*3)+(6*8)+(5*3)+(4*2)+(3*0)+(2*9)+(1*1)=128
128 % 10 = 8
So 1138320-91-8 is a valid CAS Registry Number.
1138320-91-8Relevant academic research and scientific papers
Reaction of substituted chalcones with methyl 1- bromocycloalkanecarboxylates and zinc
Kirillov,Gavrilov
experimental part, p. 1422 - 1424 (2009/02/07)
Methyl 1-bromocyclopentane-and 1-bromocyclobutanecarboxylates react with zinc and substituted chalcones to form spiro-3,4-dihydropyran-2-one derivatives: 8, 10-diaryl-7-oxaspiro[4.5]dec-8-en-6-ones and 7,9-diaryl-6-oxaspiro[3.5]non- 7-en-5-ones, respectiv
