344318-19-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 344318-19-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,4,4,3,1 and 8 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 344318-19:
(8*3)+(7*4)+(6*4)+(5*3)+(4*1)+(3*8)+(2*1)+(1*9)=130
130 % 10 = 0
So 344318-19-0 is a valid CAS Registry Number.
344318-19-0Relevant articles and documents
SYNTHESIS OF METHYL 1,5- AND 1,7-AZULENEQUINONE-3-CARBOXYLATES
Morita, Tadayoshi,Ise, Fumiaki,Takase, Kahei
, p. 1303 - 1306 (1982)
Methyl 1,5- and 1,7-azulenequinone-3-carboxylates were synthesized by oxidation of methyl 3-acetoxy-7-methoxy- and 3-acetoxy-5-methoxyazulene-1-carboxylates with ceric ammonium nitrate, respectively.