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74245-77-5

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74245-77-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 74245-77-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,2,4 and 5 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 74245-77:
(7*7)+(6*4)+(5*2)+(4*4)+(3*5)+(2*7)+(1*7)=135
135 % 10 = 5
So 74245-77-5 is a valid CAS Registry Number.

74245-77-5Downstream Products

74245-77-5Relevant articles and documents

Heterylation of 3-R1-5-R2-1,2,4-triazoles with derivatives of 3,5-dinitro-1,2,4-triazole

Kofman

, p. 1158 - 1168 (2007/10/03)

Heterylation of 3-R1-5-R2-1,2,4-triazoles (pKa 3-12) with N-alkyl-, N-alkenyl-, N-alkoxycarbonyl-, N-oxoalkyl-, N-nitroxyalkyl, and N-nitroaminoalkyl-3,5-dinitro-1,2,4-triazoles results in substitution of a nitro group in 5 position of the dinitro compound yielding 1-R-methyl-3-nitro-5-(3-R1-5-R 2-1,2,4-triazolyl)-1,2,4-triazoles. The side processes: Hydroxide-ion attack on C5 and (or) N1 of the ring both in the substrate and in the target compound afford 1-R-methyl3-nitro-1,2,4-triazol-5-ones, 3,5-dinitro-1,2,4-triazole and NH-acids of N-C-bitriazole series. Optimal reaction media are aprotic dipolar substances, and for compounds prone to heterolysis ethyl acetate-water systems. The azole pKa is the decisive factor controlling the composition and the ratio of reaction products. The process is promising for azoles with pKa > 5, and the optimal range of pKa is 8-10.

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