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90072-73-4

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90072-73-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 90072-73-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,0,7 and 2 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 90072-73:
(7*9)+(6*0)+(5*0)+(4*7)+(3*2)+(2*7)+(1*3)=114
114 % 10 = 4
So 90072-73-4 is a valid CAS Registry Number.

90072-73-4Downstream Products

90072-73-4Relevant articles and documents

SYNTHESIS AND STRUCTURE OF 6- AND 7-NITRO-1-OXOISOCHROMAN-4-SPIROOXIRANES

Chapyshev, S. V.,Aliev, Z. G.,Kartsev, V. G.,Atovmyan, L. O.

, p. 1104 - 1107 (2007/10/02)

The reaction of diazomethane with 4-nitrophthalic acid anhydride gave 4- and 5-nitro-2-carbomethoxy-ω-diazoacetophenones and 6- and 7-nitro-1-oxoisochroman-4-spirooxiranes.The structure of 7-nitro-1-oxoisochroman-4-spirooxirane was investigated by x-ray diffraction analysis.

SYNTHESIS OF 6- AND 7-NITRO-1-OXOISOCHROMAN-4-SPIRO-2'-OXIRANES

Chapyshev, S. V.,Kartsev, V. G.

, p. 222 (2007/10/02)

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