87894-73-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 87894-73-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,8,9 and 4 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 87894-73:
(7*8)+(6*7)+(5*8)+(4*9)+(3*4)+(2*7)+(1*3)=203
203 % 10 = 3
So 87894-73-3 is a valid CAS Registry Number.
87894-73-3Relevant articles and documents
Condensed diazepines. Synthesis of 1-r-3,4-dihydro-5H-benzothieno[2,3-d][1, 2]diazepin-4-ones
Tolkunov,Eresako,Mazepa,Palamarchuk,Shishkin,Tolkunov
, p. 1371 - 1381 (2013/04/24)
Novel 1-R-3,4-dihydro-5H-benzothieno[2,3-d][1,2]diazepin-4-ones have been prepared by the cyclization of 2-acyl(aroyl)benzo[b]thiophene-3-acetic acids or 1-R-benzothieno[2,3-c]pyr-3-ones with hydrazine hydrate.
