January Methyl ketene
*CH3CHCO
*
February Arsine
AsH3
March Potassium cyanide
KCN
April Methoxymethanol
CH3OCH2OH
May Pentacarbon monosulfide
C5S
June Octatetraynyl radical
C8H
July Methyl isocyanate
CH3NCO
August n-Propyl cyanide
C3H7CN
September Glutaronitrile
*C5H6N2*
October Malononitrile
CH2(CN)2
November Protonated cyanogen
NCCNH+
December Cyanide anion
CN
red stars * indicate a non-detection
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